/* Mikoshi Design System */
/* Palette: deep charcoal, warm cream, sunset orange */

:root {
    --bg-primary: #141417;
    --bg-secondary: #1b1b1f;
    --bg-tertiary: #242428;
    --bg-hover: #2c2c31;
    --bg-active: #333338;
    --bg-surface: #1f1f24;
    --bg-elevated: #28282e;

    --text-primary: #edecea;
    --text-secondary: #a8a6a2;
    --text-muted: #6b6966;

    --accent: #e8733a;
    --accent-hover: #f0884f;
    --accent-muted: rgba(232, 115, 58, 0.1);
    --accent-subtle: rgba(232, 115, 58, 0.06);
    --accent-glow: rgba(232, 115, 58, 0.25);

    --warm-white: #faf5f0;
    --warm-50: #fef7f0;

    --danger: #c9504a;
    --danger-hover: #d4635d;
    --danger-muted: rgba(201, 80, 74, 0.1);

    --success: #5a9a6b;

    --border: #2a2a30;
    --border-light: #222227;
    --border-subtle: #1e1e23;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

    --transition-fast: 120ms ease;
    --transition: 180ms ease;
    --transition-slow: 280ms ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

body.auth-body {
    overflow: auto;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent-hover); }

::selection {
    background: var(--accent-glow);
    color: var(--warm-white);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 1px 3px rgba(232, 115, 58, 0.2);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 2px 8px rgba(232, 115, 58, 0.3);
}
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover { background: var(--danger-hover); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.4rem 0.6rem;
    border-radius: var(--radius-sm);
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-hover); }

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--border);
}
.btn-outline:hover {
    background: var(--accent-subtle);
    border-color: var(--accent);
}

/* ---- Form inputs ---- */
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.88rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

textarea { resize: vertical; min-height: 80px; line-height: 1.5; }

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23a8a6a2'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--accent);
}

/* ---- Auth pages ---- */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(232, 115, 58, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(232, 115, 58, 0.03) 0%, transparent 50%),
        var(--bg-primary);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2.75rem 2.25rem;
    box-shadow:
        var(--shadow-lg),
        0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

.auth-card .brand {
    text-align: center;
    margin-bottom: 2.25rem;
}

.auth-card .brand h1 {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 0;
}

.auth-card .brand p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-top: 0.4rem;
    font-weight: 400;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-form .field { display: flex; flex-direction: column; gap: 0.4rem; }

.auth-form input {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.auth-form .btn-primary {
    margin-top: 0.5rem;
    padding: 0.75rem;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.auth-footer {
    text-align: center;
    margin-top: 1.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.auth-footer a { font-weight: 500; color: var(--accent); }

.auth-error {
    background: var(--danger-muted);
    border: 1px solid rgba(201, 80, 74, 0.2);
    color: var(--danger);
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    text-align: center;
}

.auth-success {
    background: rgba(166, 227, 161, 0.1);
    border: 1px solid rgba(166, 227, 161, 0.2);
    color: #a6e3a1;
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    text-align: center;
}

/* ---- Chat layout ---- */
.chat-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 1.25rem 1rem 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.sidebar-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1rem 1rem;
}

.sidebar-nav a, .sidebar-nav button {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}
.sidebar-nav a:hover, .sidebar-nav button:hover { color: var(--accent); }

.new-chat-btn {
    margin: 0 0.75rem 0.75rem;
    padding: 0.55rem 1rem;
    width: calc(100% - 1.5rem);
    background: transparent;
    color: var(--accent);
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    display: block;
    transition: all var(--transition);
    letter-spacing: -0.005em;
}
.new-chat-btn:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
    color: var(--accent-hover);
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 0.5rem;
}

.chat-list::-webkit-scrollbar { width: 3px; }
.chat-list::-webkit-scrollbar-track { background: transparent; }
.chat-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.chat-item {
    display: block;
    padding: 0.6rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
    margin-bottom: 1px;
    border-left: 2px solid transparent;
}
.chat-item:hover { background: var(--bg-hover); }
.chat-item.active {
    background: var(--accent-subtle);
    border-left-color: var(--accent);
}

.chat-title {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat-preview {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Context menu */
.context-menu {
    position: fixed;
    z-index: 200;
    min-width: 140px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 4px;
    display: none;
}
.context-menu.open { display: block; }

.context-menu-item {
    display: block;
    width: 100%;
    padding: 0.45rem 0.75rem;
    border: none;
    background: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    border-radius: 4px;
    transition: background var(--transition-fast);
}
.context-menu-item:hover { background: var(--bg-hover); }
.context-menu-item.danger { color: var(--danger); }
.context-menu-item.danger:hover { background: var(--danger-muted); }

/* Inline rename input */
.chat-rename-input {
    width: 100%;
    padding: 0.15rem 0.35rem;
    background: var(--bg-primary);
    border: 1px solid var(--accent);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    outline: none;
    box-shadow: 0 0 0 2px var(--accent-muted);
}

/* Delete confirmation */
.chat-item.confirm-delete { background: var(--danger-muted); }

.chat-item-confirm {
    display: flex;
    gap: 0.35rem;
    margin-top: 0.4rem;
}
.chat-item-confirm button {
    flex: 1;
    padding: 0.25rem 0.5rem;
    border: none;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}
.chat-item-confirm .confirm-yes {
    background: var(--danger);
    color: #fff;
}
.chat-item-confirm .confirm-no {
    background: var(--bg-hover);
    color: var(--text-secondary);
}
.chat-item-confirm button:hover { opacity: 0.8; }

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}
.toast {
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.84rem;
    font-weight: 500;
    opacity: 0;
    transform: translateX(1rem);
    transition: opacity var(--transition), transform var(--transition);
    pointer-events: auto;
}
.toast.visible {
    opacity: 1;
    transform: translateX(0);
}
.toast-error {
    background: var(--danger-muted);
    border: 1px solid rgba(201, 80, 74, 0.25);
    color: var(--danger);
}
.toast-success {
    background: rgba(90, 154, 107, 0.12);
    border: 1px solid rgba(90, 154, 107, 0.25);
    color: var(--success);
}

/* Main area */
#chat-main {
    flex: 1;
    min-width: 0;
    display: flex;
}

.main-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-primary);
}

/* Top bar */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(20, 20, 23, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    min-height: 50px;
    position: relative;
    z-index: 10;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.sidebar-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.sidebar-toggle:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
    border-color: var(--bg-hover);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.topbar-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, #c45a24 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: 0.02em;
}

.topbar-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topbar-actions a, .topbar-actions button {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    font-family: inherit;
}
.topbar-actions a:hover, .topbar-actions button:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* Messages */
.messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.messages::-webkit-scrollbar { width: 5px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.message {
    max-width: 72%;
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-md);
    line-height: 1.6;
    font-size: 0.9rem;
    word-wrap: break-word;
    animation: msgIn 200ms cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    background: var(--accent-subtle);
    border-left: 3px solid var(--accent);
    color: var(--text-primary);
    border-bottom-right-radius: 4px;
    max-width: 100%;
}

.message.assistant {
    align-self: flex-start;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}

.message .role {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.35rem;
    opacity: 0.5;
}

.message.user .role { color: var(--accent); }
.message.assistant .role { color: var(--text-muted); }

.message .content {
    white-space: pre-wrap;
}
.message.assistant .content {
    white-space: normal;
}
.message .content.rendered p { margin-bottom: 0.5rem; }
.message .content.rendered p:last-child { margin-bottom: 0; }
.message .content.rendered h1,
.message .content.rendered h2,
.message .content.rendered h3,
.message .content.rendered h4 {
    margin-top: 0.75rem;
    margin-bottom: 0.35rem;
    font-weight: 600;
    color: var(--text-primary);
}
.message .content.rendered h1 { font-size: 1.2rem; }
.message .content.rendered h2 { font-size: 1.1rem; }
.message .content.rendered h3 { font-size: 1.0rem; }
.message .content.rendered h4 { font-size: 0.95rem; }
.message .content.rendered blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 0.75rem;
    margin: 0.5rem 0;
    color: var(--text-secondary);
}
.message .content.rendered ul,
.message .content.rendered ol {
    padding-left: 1.5rem;
    margin: 0.5rem 0;
}
.message .content.rendered li { margin-bottom: 0.2rem; }
.message .content.rendered hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.75rem 0;
}
.message .content.rendered a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: rgba(232, 115, 58, 0.4);
}
.message .content.rendered a:hover {
    text-decoration-color: var(--accent);
}
.message .content.rendered strong { font-weight: 600; }
.message .content.rendered em { font-style: italic; }
.message .content.rendered del { opacity: 0.5; text-decoration: line-through; }
.message .content.rendered table {
    border-collapse: collapse;
    margin: 0.5rem 0;
    font-size: 0.88rem;
}
.message .content.rendered th,
.message .content.rendered td {
    border: 1px solid var(--border);
    padding: 0.35rem 0.65rem;
    text-align: left;
}
.message .content.rendered th {
    background: var(--bg-primary);
    font-weight: 600;
}

.message .content p { margin-bottom: 0.5rem; }
.message .content p:last-child { margin-bottom: 0; }
.message .content code {
    font-family: var(--font-mono);
    font-size: 0.84rem;
    background: rgba(0,0,0,0.25);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}
.message.user .content code { background: rgba(0,0,0,0.15); color: var(--accent); }
.message .content pre {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    overflow-x: auto;
    margin: 0.5rem 0;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.5;
}
.message .content pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
    color: var(--text-primary);
}
.message .content pre code.hljs {
    background: none;
    padding: 0;
}
.message.user .content pre code { background: none; }

/* Per-message wrappers: a column holding the bubble plus a sibling .msg-actions
   row below it. User wraps right-align; assistant left-aligns. Both reveal the
   action row on hover — future per-message buttons drop into .msg-actions once
   and inherit this behaviour for both roles. */
.user-msg-wrap,
.assistant-msg-wrap {
    display: flex;
    flex-direction: column;
}
.user-msg-wrap {
    align-items: flex-end;
    max-width: 72%;
    align-self: flex-end;
}
.assistant-msg-wrap {
    align-items: flex-start;
    align-self: flex-start;
}
.msg-actions {
    display: flex;
    gap: 4px;
    margin-top: 4px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 150ms, visibility 150ms, background 150ms;
    border-radius: var(--radius-md);
    padding: 2px;
}
.user-msg-wrap .msg-actions { justify-content: flex-end; }
.assistant-msg-wrap .msg-actions { justify-content: flex-start; }
.user-msg-wrap:hover .msg-actions,
.assistant-msg-wrap:hover .msg-actions,
.msg-actions:hover {
    opacity: 1;
    visibility: visible;
}
.msg-actions:hover {
    background: rgba(255, 255, 255, 0.2);
}
.retry-btn,
.copy-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    padding: 4px 6px;
    cursor: pointer;
    color: var(--accent);
}
.copy-btn:disabled {
    opacity: 0.35;
    cursor: default;
}
/* Brief confirmation flash after a successful copy. */
.copy-btn[data-copied="1"] {
    color: var(--success);
}

.attachment-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.5rem;
}

.attachment-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.5rem;
    background: rgba(232, 115, 58, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.76rem;
    color: var(--accent);
}

/* Empty state */
.load-more-btn {
    align-self: center;
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}
.load-more-btn:hover { color: var(--text-secondary); border-color: var(--text-muted); }
.load-more-btn:disabled { opacity: 0.5; cursor: default; }

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--text-muted);
    padding: 2rem;
}
.empty-state h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: -0.01em;
}
.empty-state p { font-size: 0.9rem; }

/* Composer */
:root {
    --composer-max-height: 160px;
}

.composer-wrap {
    padding: 0.85rem 1.5rem 1.25rem;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    position: relative;
}

.composer-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 100%;
}

.composer-form textarea {
    width: 100%;
    min-height: 42px;
    max-height: var(--composer-max-height);
    resize: none;
    padding: 0.6rem 0.85rem;
    line-height: 1.5;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
}

.composer-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.composer-bar .bar-select {
    flex: 1;
    height: 42px;
    min-width: 0;
    box-sizing: border-box;
}

.composer-bar .bar-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    overflow: visible;
}

.composer-bar .bar-btn.attach-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}
.composer-bar .bar-btn.attach-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}
.composer-bar .bar-btn.attach-btn input[type="file"] {
    display: none;
}

.composer-bar .send-btn {
    padding: 0;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* BYOK custom model tag field — sized to match the adjacent selects; the
   model tag is machine-formatted, so it renders in the mono face. */
.composer-bar .custom-model-input {
    flex: 1.4;
    height: 42px;
    min-width: 0;
    box-sizing: border-box;
    padding: 0 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}
.composer-bar .custom-model-input[hidden] { display: none; }

/* File preview bar */
.file-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.5rem;
}
.file-preview:empty { display: none; }

.file-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    color: var(--text-secondary);
}
.file-chip .remove {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1;
    transition: color var(--transition-fast);
}
.file-chip .remove:hover { color: var(--danger); }

/* Drag-and-drop overlay */
.composer-wrap.drag-over {
    outline: 2px dashed var(--accent);
    outline-offset: -4px;
    background: var(--accent-muted);
}

.composer-bar .send-btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* Streaming cursor */
.cursor::after {
    content: '\2588';
    color: var(--accent);
    margin-left: 2px;
}
.cursor.stall::after {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.message.disconnected {
    opacity: 0.65;
    border-color: var(--danger);
}
.message.disconnected::after {
    content: 'Connection lost';
    display: block;
    font-size: 0.72rem;
    color: var(--danger);
    margin-top: 0.4rem;
    font-weight: 500;
}

/* Sidebar overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}
.sidebar-overlay.active { display: block; }

/* ---- Settings page ---- */
.settings-page {
    max-width: 620px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    overflow-y: auto;
    height: 100vh;
}

.settings-page h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.settings-page h2 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    letter-spacing: -0.01em;
}

.settings-back {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
    transition: color var(--transition-fast);
}
.settings-back:hover { color: var(--accent); }

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.settings-form .field { display: flex; flex-direction: column; gap: 0.4rem; }

.checkbox-label {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.55rem;
    cursor: pointer;
}

.settings-form .checkbox-label {
    flex-direction: row;
    align-items: center;
    gap: 0.55rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.settings-form .btn-primary {
    margin-top: 0.5rem;
    align-self: flex-start;
    border-radius: var(--radius-md);
}

/* Facts list */
.facts-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.fact-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.7rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}
.fact-item:hover { border-color: var(--bg-hover); }

.fact-item span {
    font-size: 0.88rem;
    flex: 1;
    line-height: 1.45;
    color: var(--text-primary);
}

.fact-item .btn-danger {
    flex-shrink: 0;
    padding: 0.25rem 0.55rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.facts-empty {
    color: var(--text-muted);
    font-size: 0.88rem;
    padding: 1rem 0;
}

/* Danger zone */
.danger-zone {
    margin-top: 2.5rem;
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    background: rgba(201, 80, 74, 0.06);
}

.danger-zone h2 {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    color: var(--danger);
}

.danger-zone-warning {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.danger-zone .btn-danger {
    margin-top: 0.5rem;
    border-radius: var(--radius-md);
}

/* ---- Scrollbar global ---- */
*::-webkit-scrollbar { width: 5px; height: 5px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
*::-webkit-scrollbar-thumb:hover { background: var(--bg-active); }

/* ---- Utility ---- */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    :root {
        --composer-max-height: calc(1.5em * 6 + 1.2rem + 2px);
    }

    .sidebar-toggle { display: inline-flex; }

    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        z-index: 100;
        height: 100vh;
        transition: left var(--transition-slow);
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open { left: 0; }

    .composer-bar .bar-select {
        font-size: 0.76rem;
    }

    .composer-bar .custom-model-input {
        font-size: 0.76rem;
    }

    .message { max-width: 88%; }
}

/* ---- Motion ---- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ---- Engrams page ---- */
.engrams-page {
    max-width: 860px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    overflow-y: auto;
    height: 100vh;
}

.engrams-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.engrams-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.engrams-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 2rem 0;
    text-align: center;
}

.engrams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
}

.engram-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem 1.15rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.engram-card:hover {
    border-color: var(--bg-hover);
    box-shadow: var(--shadow-sm);
}

.engram-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
}

.engram-card-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.engram-badge-default {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    margin-left: 0.4rem;
    vertical-align: middle;
}

.engram-card-actions {
    display: flex;
    gap: 0.15rem;
    flex-shrink: 0;
}

.engram-card-actions .btn-ghost {
    font-size: 0.78rem;
    padding: 0.2rem 0.45rem;
}

.engram-delete-btn:hover {
    color: var(--danger) !important;
}

.engram-card-prompt {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.engram-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
}

.engram-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.engram-tag {
    display: inline-block;
    padding: 0.1rem 0.5rem;
    background: var(--accent-muted);
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.01em;
}

.engram-tag.secondary {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.engram-meta-item {
    font-size: 0.74rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Engram form overlay */
.engram-form-overlay {
    position: fixed;
    inset: 0;
    z-index: 250;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    animation: overlayIn 150ms ease;
}

@keyframes overlayIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.engram-form-card {
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: cardIn 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cardIn {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.engram-form-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.engram-form-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.engram-form-header .btn-ghost {
    font-size: 1.2rem;
    padding: 0.2rem 0.5rem;
    line-height: 1;
}

.engram-form-body {
    overflow-y: auto;
    padding: 1.5rem;
    flex: 1;
}

.engram-form-main {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.engram-form-main .field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.field-hint {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.engram-form textarea {
    min-height: 140px;
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.55;
}

.engram-form-advanced {
    margin-top: 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.engram-form-advanced summary {
    padding: 0.7rem 1rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    user-select: none;
}

.engram-form-advanced summary:hover {
    color: var(--text-primary);
}

.engram-form-advanced[open] summary {
    border-bottom: 1px solid var(--border);
    margin-bottom: 0;
}

.engram-form-advanced-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.engram-form-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.engram-form-row .checkbox-label {
    flex: 1;
}

.engram-form-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
    .engrams-grid {
        grid-template-columns: 1fr;
    }
    .engram-form-card {
        max-height: 95vh;
    }
    .engram-form-row {
        flex-direction: column;
        gap: 0.75rem;
    }
    .engram-type-group {
        flex-direction: column;
    }
    .engram-length-group {
        grid-template-columns: 1fr 1fr;
    }
}

/* ==================== */
/* Engram Create Page   */
/* ==================== */

.engram-create-page {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
}

.engram-create-header {
    margin-bottom: 2rem;
}

.engram-create-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.35rem 0;
}

.engram-create-subtitle {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin: 0;
}

.engram-create-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.engram-create-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.engram-create-section h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--border);
}

.engram-create-section > .field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 1rem;
}

.engram-create-section > .field:last-child,
.engram-create-section > details:last-child {
    margin-bottom: 0;
}

.engram-create-section-desc {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin: -0.5rem 0 1rem 0;
}

/* Persona type selector */
.engram-type-group {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.engram-type-option {
    flex: 1;
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.85rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.engram-type-option:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

.engram-type-option input[type="radio"] {
    margin-top: 0.2rem;
    accent-color: var(--accent);
}

.engram-type-option:has(input:checked) {
    border-color: var(--accent);
    background: var(--accent-muted);
}

.engram-type-label {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.engram-type-label strong {
    font-size: 0.88rem;
    color: var(--text-primary);
}

.engram-type-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.35;
}

/* Prompt builder textareas */
.engram-create-section textarea {
    min-height: 100px;
    font-family: var(--font-mono);
    font-size: 0.84rem;
    line-height: 1.5;
}

/* Raw prompt preview */
.engram-create-preview {
    margin-top: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.engram-create-preview summary {
    padding: 0.65rem 1rem;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    user-select: none;
    transition: color var(--transition-fast);
}

.engram-create-preview summary:hover {
    color: var(--text-primary);
}

.engram-create-preview[open] summary {
    border-bottom: 1px solid var(--border);
}

.engram-create-preview textarea {
    border: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    min-height: 120px;
    resize: none;
}

/* Response length radio group */
.engram-length-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.engram-length-option {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.65rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.engram-length-option:hover {
    border-color: var(--accent);
}

.engram-length-option input[type="radio"] {
    margin-top: 0.15rem;
    accent-color: var(--accent);
}

.engram-length-option:has(input:checked) {
    border-color: var(--accent);
    background: var(--accent-muted);
}

.engram-length-label {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.engram-length-label strong {
    font-size: 0.82rem;
    color: var(--text-primary);
}

.engram-length-label span {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Footer */
.engram-create-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    padding-top: 0.5rem;
}

/* ---- Plan badges ---- */
.plan-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: capitalize;
    border: 1px solid transparent;
    text-decoration: none;
    transition: all var(--transition-fast);
}
.topbar-actions .plan-badge:hover { transform: translateY(-1px); }
.plan-badge-free {
    background: var(--bg-hover);
    color: var(--text-secondary);
    border-color: var(--border);
}
.plan-badge-pro {
    background: var(--accent-muted);
    color: var(--accent-hover);
    border-color: var(--accent-glow);
}
.plan-badge-enterprise {
    background: linear-gradient(135deg, rgba(232,115,58,0.18), rgba(90,154,107,0.18));
    color: var(--warm-white);
    border-color: var(--accent-glow);
}

/* ---- Settings plan card ---- */
.settings-plan-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    margin-bottom: 1.5rem;
}
.settings-plan-info {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}
.settings-plan-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.settings-plan-tier {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: capitalize;
}

/* ---- Billing page ---- */
.billing-page {
    max-width: 880px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem;
}
.billing-page h1 { margin-bottom: 1.5rem; }
.billing-page h2 {
    font-size: 1.05rem;
    margin: 2rem 0 1rem;
    color: var(--text-secondary);
}

.billing-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    padding: 1.3rem 1.4rem;
}
.billing-current { margin-bottom: 1rem; }
.billing-current-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}
.billing-current-tier {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.billing-current-name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}
.billing-sub-status {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--success);
    background: rgba(90, 154, 107, 0.12);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}
.billing-sub-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.84rem;
    color: var(--text-secondary);
}

/* ---- Usage widget ---- */
.usage-widget { margin-top: 0.5rem; }
.usage-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}
.usage-label { font-size: 0.82rem; color: var(--text-secondary); }
.usage-value { font-size: 0.82rem; font-weight: 600; color: var(--text-primary); }
.usage-bar {
    height: 8px;
    background: var(--bg-hover);
    border-radius: 999px;
    overflow: hidden;
}
.usage-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 999px;
    transition: width var(--transition-slow);
}
.usage-fill.unlimited {
    width: 100% !important;
    background: linear-gradient(90deg, var(--accent), var(--success));
}
.usage-fill.usage-warn { background: #d4a73a; }
.usage-fill.usage-full { background: var(--danger); }
.usage-hint {
    font-size: 0.76rem;
    color: var(--text-muted);
    margin-top: 0.45rem;
}

/* ---- Plan comparison cards ---- */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}
.plan-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.4rem 1.3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    transition: border-color var(--transition), transform var(--transition);
}
.plan-card:hover { border-color: var(--bg-hover); }
.plan-card-current {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow);
}
.plan-card-head { display: flex; flex-direction: column; gap: 0.25rem; }
.plan-card-name { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.plan-card-price { font-size: 1.35rem; font-weight: 700; color: var(--accent-hover); }
.plan-card-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}
.plan-card-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}
.plan-check { color: var(--success); flex-shrink: 0; }
.plan-cta { width: 100%; margin-top: auto; }
.plan-cta-muted {
    background: var(--bg-hover);
    color: var(--text-muted);
}
.plan-cta-muted:disabled { opacity: 0.6; cursor: not-allowed; }

/* ---- Paywall modal ---- */
.paywall-overlay {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}
.paywall-overlay.visible { opacity: 1; pointer-events: auto; }
.paywall-card {
    max-width: 380px;
    width: calc(100% - 2rem);
    padding: 2rem 1.8rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transform: translateY(12px);
    transition: transform var(--transition);
}
.paywall-overlay.visible .paywall-card { transform: translateY(0); }
.paywall-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: var(--danger-muted);
    color: var(--danger);
}
.paywall-title { font-size: 1.15rem; margin-bottom: 0.5rem; }
.paywall-body { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.paywall-actions {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
}
.paywall-actions .btn { flex: 1; }
.paywall-upgrade { text-decoration: none; }

/* --- Admin surface --- */

.admin-page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    color: var(--text-primary);
}
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 1.5rem 0;
}
.admin-header h1 { margin: 0; }

.admin-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.admin-stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
}
.admin-stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}
.admin-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
}

.admin-tier-breakdown h2,
.admin-section h2 {
    font-size: 1.1rem;
    margin: 0 0 0.75rem;
    color: var(--text-muted);
}
.admin-tier-grid {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.admin-tier-card {
    flex: 1;
    min-width: 140px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
}
.admin-tier-name { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.25rem; }
.admin-tier-count { font-size: 1.5rem; font-weight: 700; }

.admin-search {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}
.admin-search input {
    flex: 1;
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.admin-table th {
    text-align: left;
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
}
.admin-table td {
    padding: 0.7rem 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
}
.admin-user-link { display: flex; flex-direction: column; text-decoration: none; }
.admin-user-name { color: var(--text-primary); font-weight: 600; }
.admin-user-email { color: var(--text-muted); font-size: 0.8rem; }

.admin-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem;
}

.admin-pagination {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}
.admin-page-of { color: var(--text-muted); font-size: 0.85rem; }

.admin-detail-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin: 1.5rem 0;
}
.admin-detail-head h1 { margin: 0 0 0.25rem; }
.admin-detail-email { color: var(--text-muted); margin: 0; }
.admin-detail-badges { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.admin-detail-meta {
    display: flex;
    gap: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
}
.admin-detail-meta span { display: block; text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.04em; }

.admin-section { margin-bottom: 2rem; }
.admin-inline-form { display: flex; gap: 0.5rem; align-items: center; }
.admin-hint { color: var(--text-muted); font-style: italic; }

/* badges shared across admin views */
.tier-badge, .role-badge, .status-badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.role-badge.role-admin {
    background: rgba(220, 170, 60, 0.15);
    border-color: rgba(220, 170, 60, 0.4);
    color: #dcaa3c;
}
.status-badge.status-active {
    background: rgba(80, 200, 120, 0.15);
    border-color: rgba(80, 200, 120, 0.4);
    color: #4ec878;
}
.status-badge.status-disabled {
    background: rgba(220, 80, 80, 0.15);
    border-color: rgba(220, 80, 80, 0.4);
    color: #dc5050;
}
.status-badge.status-pending {
    background: rgba(200, 180, 80, 0.12);
    border-color: rgba(200, 180, 80, 0.3);
    color: #c8b450;
}

/* --- Public pages (landing, pricing, legal) --- */

.public-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-subtle);
}
.public-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.public-nav-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.public-nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.15s;
}
.public-nav-link:hover { color: var(--text-primary); }
.public-nav-cta { padding: 0.45rem 1.1rem; }

/* Landing */
.landing-hero {
    text-align: center;
    padding: 5rem 1.5rem 4rem;
    max-width: 720px;
    margin: 0 auto;
}
.landing-headline {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin: 0 0 1rem;
}
.landing-subheadline {
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0 auto 2rem;
    max-width: 560px;
}
.landing-cta-row {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}
.landing-cta-primary { padding: 0.7rem 1.75rem; font-size: 1.05rem; }
.landing-cta-secondary { padding: 0.7rem 1.5rem; font-size: 1.05rem; }

.landing-features { padding: 2rem 1.5rem; }
.landing-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}
.landing-feature {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.5rem;
}
.landing-feature h3 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
}
.landing-feature p {
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
    font-size: 0.92rem;
}

.landing-pricing-teaser {
    text-align: center;
    padding: 3rem 1.5rem 4rem;
}
.landing-pricing-teaser h2 {
    font-size: 1.5rem;
    margin: 0 0 2rem;
}
.landing-pricing-teaser .plan-grid {
    max-width: 900px;
    margin: 0 auto 2rem;
}
.landing-pricing-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.15s;
}
.landing-pricing-link:hover { color: var(--text-primary); }

/* Plan card "popular" highlight for public pricing */
.plan-card-popular {
    border-color: rgba(100, 140, 255, 0.5);
    box-shadow: 0 0 0 1px rgba(100, 140, 255, 0.15);
    position: relative;
}

/* Pricing page */
.pricing-page {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    text-align: center;
}
.pricing-headline {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin: 0 0 0.5rem;
}
.pricing-subheadline {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin: 0 0 3rem;
}
.pricing-page .plan-grid {
    text-align: left;
    margin-bottom: 3rem;
}

/* Pricing FAQ */
.pricing-faq {
    max-width: 680px;
    margin: 0 auto;
    text-align: left;
}
.pricing-faq h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}
.pricing-faq details {
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 0;
}
.pricing-faq summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
}
.pricing-faq details[open] summary { margin-bottom: 0.5rem; }
.pricing-faq p {
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Legal pages */
.legal-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 3rem 1.5rem 4rem;
    color: var(--text-primary);
    line-height: 1.7;
}
.legal-header { margin-bottom: 2.5rem; }
.legal-header h1 {
    font-size: 2rem;
    margin: 0 0 0.5rem;
}
.legal-updated { color: var(--text-muted); font-size: 0.9rem; }
.legal-page section { margin-bottom: 2rem; }
.legal-page h2 {
    font-size: 1.2rem;
    margin: 0 0 0.75rem;
}
.legal-page p { color: var(--text-muted); margin: 0 0 0.75rem; }
.legal-page ul { color: var(--text-muted); padding-left: 1.5rem; }
.legal-page ul li { margin-bottom: 0.4rem; }

/* Public footer */
.public-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 2rem;
    margin-top: 2rem;
}
.public-footer-inner {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.public-footer-brand {
    font-weight: 800;
    color: var(--text-muted);
}
.public-footer-links {
    display: flex;
    gap: 1.5rem;
}
.public-footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.15s;
}
.public-footer-links a:hover { color: var(--text-primary); }

@media (max-width: 640px) {
    .public-nav { padding: 0.75rem 1rem; }
    .public-nav-links { gap: 0.75rem; }
    .public-nav-link { display: none; }
    .public-footer-inner { flex-direction: column; gap: 1rem; }
}

/* --- Usage chip (chat topbar) + enhanced usage detail --- */

.usage-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    text-decoration: none;
    transition: all 0.15s;
}
.usage-chip:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}
.usage-chip-warn {
    color: #c8b450;
    border-color: rgba(200, 180, 80, 0.4);
    background: rgba(200, 180, 80, 0.1);
}
.usage-chip-full {
    color: #dc5050;
    border-color: rgba(220, 80, 80, 0.4);
    background: rgba(220, 80, 80, 0.1);
}

/* Token/cost detail row beneath the depletion bar */
.usage-detail {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}
.usage-detail-item {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}