/* =========================================================
   FamilyChat – Global stylesheet
   ========================================================= */

:root {
    --bg-0: #0d0d1a;
    --bg-1: #13132a;
    --bg-2: #1a1a30;
    --bg-3: #22223a;
    --bg-4: #2a2a45;
    --border: #2e2e50;

    --text-1: #e8e8f0;
    --text-2: #a8a8c0;
    --text-3: #6868a0;

    --accent: #6c63ff;
    --accent-hover: #5a52e0;
    --accent-dim: rgba(108, 99, 255, 0.15);

    --success: #22c55e;
    --success-dim: rgba(34, 197, 94, 0.12);
    --warning: #f59e0b;
    --warning-dim: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-dim: rgba(239, 68, 68, 0.12);
    --info: #38bdf8;
    --info-dim: rgba(56, 189, 248, 0.12);

    --claude: #8b5cf6;
    --claude-dim: rgba(139, 92, 246, 0.15);
    --openai: #10a37f;
    --openai-dim: rgba(16, 163, 127, 0.15);
    --gemini: #4285f4;
    --gemini-dim: rgba(66, 133, 244, 0.15);

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);

    --sidebar-w: 260px;
    --topbar-h: 56px;
    --input-h: 72px;

    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body { font-family: var(--font); background: var(--bg-0); color: var(--text-1); line-height: 1.6; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
input, select, textarea, button { font-family: inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-4); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* =========================================================
   Buttons
   ========================================================= */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: var(--radius-sm);
    border: none; cursor: pointer; font-size: 14px; font-weight: 500;
    transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
    white-space: nowrap; text-decoration: none;
}
.btn:active { transform: scale(0.97); }

.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }

.btn-secondary { background: var(--bg-3); color: var(--text-1); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-4); text-decoration: none; color: var(--text-1); }

.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-3); color: var(--text-1); text-decoration: none; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; text-decoration: none; color: #fff; }

.btn-danger-ghost { background: transparent; color: var(--text-3); border: none; }
.btn-danger-ghost:hover { color: var(--danger); background: var(--danger-dim); text-decoration: none; }

.btn-icon { padding: 8px 10px; font-size: 16px; }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-full { width: 100%; justify-content: center; }

/* =========================================================
   Forms
   ========================================================= */
.form-group { display: flex; flex-direction: column; gap: 6px; }

label {
    font-size: 13px; font-weight: 600; color: var(--text-2);
    display: flex; align-items: center; gap: 6px;
}

.form-control {
    background: var(--bg-1); border: 1px solid var(--border);
    color: var(--text-1); border-radius: var(--radius-sm);
    padding: 10px 14px; font-size: 14px;
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none; width: 100%;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.form-control::placeholder { color: var(--text-3); }

.select {
    background: var(--bg-2); border: 1px solid var(--border);
    color: var(--text-1); border-radius: var(--radius-sm);
    padding: 7px 10px; font-size: 13px; cursor: pointer;
    outline: none; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236868a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center;
    padding-right: 30px;
}
.select:focus { border-color: var(--accent); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.form-group-center { justify-content: center; }

.checkbox-label {
    display: flex; align-items: center; gap: 8px; cursor: pointer;
    font-weight: 500; color: var(--text-1); font-size: 14px;
}
.checkbox-label input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

.btn-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* =========================================================
   Alerts
   ========================================================= */
.alert {
    padding: 12px 16px; border-radius: var(--radius-sm); font-size: 14px;
    display: flex; align-items: center; gap: 8px;
}
.alert-success { background: var(--success-dim); color: var(--success); border: 1px solid rgba(34,197,94,0.25); }
.alert-error   { background: var(--danger-dim);  color: var(--danger);  border: 1px solid rgba(239,68,68,0.25); }
.alert-info    { background: var(--info-dim);    color: var(--info);    border: 1px solid rgba(56,189,248,0.25); }
.alert-warning { background: var(--warning-dim); color: var(--warning); border: 1px solid rgba(245,158,11,0.25); }

/* =========================================================
   Badges
   ========================================================= */
.badge {
    display: inline-flex; align-items: center;
    padding: 2px 8px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
}
.badge-admin   { background: rgba(108,99,255,0.2); color: var(--accent); }
.badge-user    { background: var(--bg-4); color: var(--text-2); }
.badge-success { background: var(--success-dim); color: var(--success); }
.badge-neutral { background: var(--bg-4); color: var(--text-3); }
.badge-danger  { background: var(--danger-dim); color: var(--danger); }

.key-badge { background: var(--success-dim); color: var(--success); font-size: 11px; font-weight: 600; padding: 1px 6px; border-radius: var(--radius-full); }

.key-indicator {
    display: inline-flex; align-items: center; justify-content: center;
    width: 22px; height: 22px; border-radius: 4px; font-size: 11px; font-weight: 700;
    background: var(--bg-4); color: var(--text-3); margin-right: 2px;
}
.key-indicator.on { background: var(--success-dim); color: var(--success); }

/* =========================================================
   Navbar (page layout)
   ========================================================= */
.navbar {
    background: var(--bg-1); border-bottom: 1px solid var(--border);
    height: var(--topbar-h); display: flex; align-items: center;
    padding: 0 24px; gap: 8px;
}
.navbar-brand { font-size: 18px; font-weight: 700; color: var(--text-1); flex: 1; }
.navbar-nav { display: flex; align-items: center; gap: 4px; }
.nav-link { padding: 6px 12px; border-radius: var(--radius-sm); color: var(--text-2); font-size: 14px; font-weight: 500; transition: background 0.15s, color 0.15s; }
.nav-link:hover { background: var(--bg-3); color: var(--text-1); text-decoration: none; }
.nav-link.active { background: var(--accent-dim); color: var(--accent); }
.nav-logout { color: var(--text-3); }
.nav-logout:hover { color: var(--danger); background: var(--danger-dim); }

/* =========================================================
   Page layout (non-chat pages)
   ========================================================= */
.page-body { display: flex; flex-direction: column; min-height: 100vh; }
.page-content { flex: 1; padding: 32px 24px; max-width: 900px; margin: 0 auto; width: 100%; }

.page-title { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.page-subtitle { color: var(--text-2); margin-bottom: 24px; }
.page-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }

/* =========================================================
   Settings / Admin pages
   ========================================================= */
.settings-page { display: flex; flex-direction: column; gap: 24px; }

.settings-card {
    background: var(--bg-1); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 24px;
    display: flex; flex-direction: column; gap: 16px;
}
.settings-card-title { font-size: 16px; font-weight: 700; }
.settings-card-desc { color: var(--text-2); font-size: 14px; }

.settings-form { display: flex; flex-direction: column; gap: 14px; }

/* =========================================================
   Auth pages
   ========================================================= */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-0); }
.auth-container { width: 100%; max-width: 400px; padding: 16px; }
.auth-card { background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 40px 36px; display: flex; flex-direction: column; gap: 20px; box-shadow: var(--shadow); }
.auth-logo { font-size: 40px; text-align: center; }
.auth-title { font-size: 24px; font-weight: 800; text-align: center; }
.auth-subtitle { color: var(--text-2); text-align: center; font-size: 14px; margin-top: -10px; }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-footer { text-align: center; font-size: 13px; color: var(--text-2); }

.otp-input { font-size: 24px; text-align: center; letter-spacing: 8px; font-family: var(--font-mono); }

/* =========================================================
   2FA Setup page
   ========================================================= */
.page-card { background: var(--bg-1); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; max-width: 520px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.twofa-setup { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.qr-container { background: white; padding: 16px; border-radius: var(--radius); }
.qr-code { display: block; width: 200px; height: 200px; }
.twofa-manual { text-align: center; color: var(--text-2); font-size: 14px; }
.secret-key { display: block; font-family: var(--font-mono); font-size: 13px; background: var(--bg-2); padding: 8px 14px; border-radius: var(--radius-sm); color: var(--accent); margin-top: 6px; letter-spacing: 2px; word-break: break-all; }

.twofa-status { padding: 10px 16px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600; }
.twofa-on  { background: var(--success-dim); color: var(--success); }
.twofa-off { background: var(--warning-dim); color: var(--warning); }

/* =========================================================
   Tables
   ========================================================= */
.table-wrapper { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-3); border-bottom: 1px solid var(--border); }
.data-table td { padding: 12px 14px; border-bottom: 1px solid rgba(46,46,80,0.5); vertical-align: middle; }
.data-table tbody tr:hover { background: var(--bg-2); }
.data-table tfoot .total-row td { padding-top: 14px; font-size: 15px; border-top: 2px solid var(--border); border-bottom: none; }
.text-muted { color: var(--text-3); }
.cost-cell { font-family: var(--font-mono); font-size: 13px; }
.over-budget { color: var(--danger) !important; }

/* =========================================================
   Provider dots/chips
   ========================================================= */
.provider-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.provider-dot.claude { background: var(--claude); }
.provider-dot.openai { background: var(--openai); }
.provider-dot.gemini { background: var(--gemini); }

.provider-badge { padding: 2px 8px; border-radius: var(--radius-full); font-size: 12px; font-weight: 600; }
.provider-badge.claude { background: var(--claude-dim); color: var(--claude); }
.provider-badge.openai { background: var(--openai-dim); color: var(--openai); }
.provider-badge.gemini { background: var(--gemini-dim); color: var(--gemini); }

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

.chat-layout {
    display: flex; width: 100%; height: 100vh;
}

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

.sidebar-header {
    padding: 16px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
}
.sidebar-logo { font-size: 16px; font-weight: 800; color: var(--text-1); }

.btn-new-chat {
    margin: 12px; border-radius: var(--radius-sm);
    justify-content: center; font-size: 13px;
}

.conversations-list {
    flex: 1; overflow-y: auto; padding: 4px 8px;
}
.conv-empty { padding: 20px 12px; color: var(--text-3); font-size: 13px; text-align: center; }

.conv-item {
    padding: 10px 12px; border-radius: var(--radius-sm); cursor: pointer;
    transition: background 0.12s; margin-bottom: 2px;
    display: flex; flex-direction: column; gap: 3px;
    border: 1px solid transparent;
}
.conv-item:hover { background: var(--bg-2); }
.conv-item.active { background: var(--accent-dim); border-color: rgba(108,99,255,0.3); }

.conv-title { font-size: 13px; font-weight: 500; color: var(--text-1); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item.active .conv-title { color: var(--accent); }

.conv-meta { display: flex; align-items: center; gap: 6px; }
.conv-provider { width: 6px; height: 6px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.conv-provider.claude { background: var(--claude); }
.conv-provider.openai { background: var(--openai); }
.conv-provider.gemini { background: var(--gemini); }
.conv-date { font-size: 11px; color: var(--text-3); }

.sidebar-footer {
    padding: 12px; border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 4px;
}
.sidebar-user { font-size: 12px; color: var(--text-3); padding: 4px 8px; font-weight: 600; }
.sidebar-link {
    padding: 7px 10px; border-radius: var(--radius-sm); font-size: 13px;
    color: var(--text-2); transition: background 0.12s, color 0.12s;
    display: block;
}
.sidebar-link:hover { background: var(--bg-3); color: var(--text-1); text-decoration: none; }
.sidebar-logout { color: var(--text-3); }
.sidebar-logout:hover { color: var(--danger); background: var(--danger-dim); }

/* Main chat area */
.chat-main {
    flex: 1; display: flex; flex-direction: column; overflow: hidden;
    background: var(--bg-0);
}

.chat-topbar {
    height: var(--topbar-h); background: var(--bg-1); border-bottom: 1px solid var(--border);
    display: flex; align-items: center; padding: 0 16px; gap: 12px; flex-shrink: 0;
}
.chat-title-area { flex: 1; overflow: hidden; }
.chat-current-title { font-size: 14px; font-weight: 600; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-controls { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.provider-select { min-width: 120px; }
.model-select { min-width: 180px; }

.messages-area {
    flex: 1; overflow-y: auto; padding: 24px;
    display: flex; flex-direction: column; gap: 16px;
}

/* Welcome screen */
.welcome-screen { margin: auto; text-align: center; padding: 40px 20px; max-width: 400px; }
.welcome-icon { font-size: 48px; margin-bottom: 16px; }
.welcome-screen h2 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.welcome-screen p { color: var(--text-2); font-size: 15px; margin-bottom: 20px; }
.provider-chips { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.provider-chip { padding: 5px 12px; border-radius: var(--radius-full); font-size: 12px; font-weight: 700; }
.provider-chip.claude { background: var(--claude-dim); color: var(--claude); }
.provider-chip.openai { background: var(--openai-dim); color: var(--openai); }
.provider-chip.gemini { background: var(--gemini-dim); color: var(--gemini); }

/* Messages */
.message { display: flex; flex-direction: column; gap: 6px; max-width: 80%; animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.message-user { align-self: flex-end; align-items: flex-end; }
.message-assistant { align-self: flex-start; align-items: flex-start; }

.message-bubble {
    padding: 12px 16px; border-radius: var(--radius-lg); font-size: 15px; line-height: 1.65;
    word-break: break-word;
}
.message-user .message-bubble {
    background: var(--accent); color: white;
    border-bottom-right-radius: 4px;
}
.message-assistant .message-bubble {
    background: var(--bg-2); color: var(--text-1);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}

.message-meta { display: flex; align-items: center; gap: 8px; }
.message-provider-badge { padding: 2px 8px; border-radius: var(--radius-full); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.message-provider-badge.claude { background: var(--claude-dim); color: var(--claude); }
.message-provider-badge.openai { background: var(--openai-dim); color: var(--openai); }
.message-provider-badge.gemini { background: var(--gemini-dim); color: var(--gemini); }
.message-time { font-size: 11px; color: var(--text-3); }
.message-cost { font-size: 11px; color: var(--text-3); font-family: var(--font-mono); }

/* Markdown in AI messages */
.message-assistant .message-bubble p { margin-bottom: 10px; }
.message-assistant .message-bubble p:last-child { margin-bottom: 0; }
.message-assistant .message-bubble h1,
.message-assistant .message-bubble h2,
.message-assistant .message-bubble h3 { margin: 14px 0 8px; font-weight: 700; }
.message-assistant .message-bubble ul,
.message-assistant .message-bubble ol { margin: 8px 0 8px 20px; }
.message-assistant .message-bubble li { margin-bottom: 4px; }
.message-assistant .message-bubble code {
    background: var(--bg-3); padding: 1px 6px; border-radius: 4px;
    font-family: var(--font-mono); font-size: 13px; color: var(--accent);
}
.message-assistant .message-bubble pre {
    background: var(--bg-0); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 14px 16px; overflow-x: auto; margin: 10px 0;
}
.message-assistant .message-bubble pre code { background: none; padding: 0; color: var(--text-1); }
.message-assistant .message-bubble blockquote {
    border-left: 3px solid var(--accent); padding-left: 14px;
    color: var(--text-2); margin: 10px 0;
}
.message-assistant .message-bubble table { border-collapse: collapse; width: 100%; margin: 10px 0; }
.message-assistant .message-bubble th,
.message-assistant .message-bubble td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.message-assistant .message-bubble th { background: var(--bg-3); }
.message-assistant .message-bubble a { color: var(--accent); }

/* Typing indicator */
.typing-indicator {
    display: flex; align-items: center; gap: 5px;
    padding: 12px 24px; flex-shrink: 0;
}
.typing-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--text-3); animation: typing 1.4s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: 0.4; } 30% { transform: translateY(-5px); opacity: 1; } }

/* Input area */
.chat-input-area {
    padding: 12px 16px; background: var(--bg-1); border-top: 1px solid var(--border);
    display: flex; align-items: flex-end; gap: 10px; flex-shrink: 0;
}
.message-input {
    flex: 1; background: var(--bg-2); border: 1px solid var(--border);
    color: var(--text-1); border-radius: var(--radius); padding: 10px 14px;
    font-size: 15px; resize: none; outline: none; max-height: 160px; min-height: 44px;
    transition: border-color 0.15s;
    line-height: 1.5;
}
.message-input:focus { border-color: var(--accent); }
.message-input:disabled { opacity: 0.5; cursor: not-allowed; }
.message-input::placeholder { color: var(--text-3); }

.btn-send { height: 44px; padding: 0 18px; flex-shrink: 0; }
.btn-send:disabled { opacity: 0.5; cursor: not-allowed; }

/* =========================================================
   Modals
   ========================================================= */
.modal-backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,0.6);
    backdrop-filter: blur(2px); z-index: 100;
}
.modal {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background: var(--bg-1); border: 1px solid var(--border);
    border-radius: var(--radius-lg); box-shadow: var(--shadow);
    z-index: 101; width: 90%; max-width: 640px; max-height: 85vh;
    display: flex; flex-direction: column; overflow: hidden;
}
.modal-header {
    padding: 18px 24px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; flex-shrink: 0;
}
.modal-header h2 { font-size: 17px; font-weight: 700; }
.modal-close {
    background: none; border: none; color: var(--text-3); cursor: pointer;
    font-size: 20px; padding: 4px 8px; border-radius: 4px;
    transition: color 0.15s, background 0.15s;
}
.modal-close:hover { color: var(--text-1); background: var(--bg-3); }
.modal-body { padding: 24px; overflow-y: auto; display: flex; flex-direction: column; gap: 20px; }

/* Cost modal content */
.cost-stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cost-stat-card {
    background: var(--bg-2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 14px;
}
.cost-stat-label { font-size: 12px; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.cost-stat-value { font-size: 22px; font-weight: 800; margin: 4px 0 2px; font-family: var(--font-mono); }
.cost-stat-sub { font-size: 12px; color: var(--text-2); }

.cost-section-title { font-size: 13px; font-weight: 700; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 10px; }

.cost-provider-list { display: flex; flex-direction: column; gap: 8px; }
.cost-provider-item {
    display: flex; align-items: center; justify-content: space-between;
    background: var(--bg-2); border-radius: var(--radius-sm); padding: 10px 14px;
}
.cost-provider-name { font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.cost-provider-stats { text-align: right; }
.cost-provider-cost { font-size: 15px; font-weight: 700; font-family: var(--font-mono); }
.cost-provider-tokens { font-size: 12px; color: var(--text-3); }

.cost-comparison { background: var(--bg-2); border-radius: var(--radius); padding: 14px; font-size: 13px; color: var(--text-2); line-height: 1.6; }
.cost-comparison strong { color: var(--text-1); }

.loading-text { color: var(--text-3); text-align: center; padding: 20px; }

.chart-container { position: relative; height: 180px; }