/* MailAssist — Marceau Solutions Branding (Dark + Gold) */

:root {
    --gold: #C9963C;
    --gold-light: #D4AF37;
    --gold-dim: rgba(201, 150, 60, 0.15);
    --charcoal: #333333;
    --dark-bg: #1a1a2e;
    --dark-card: #16213e;
    --dark-surface: #0f3460;
    --dark-border: #1a3a5c;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --danger: #ef4444;
    --success: #22c55e;
    --info: #3b82f6;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ── Layout ── */
.app-header {
    background: linear-gradient(135deg, var(--charcoal), #2D2D2D);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid var(--gold);
}

.app-header h1 {
    color: var(--gold);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.app-header .subtitle {
    color: var(--text-muted);
    font-size: 13px;
    margin-left: 12px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 13px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

/* ── Auth Screen ── */
.auth-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
    text-align: center;
}

.auth-screen h2 {
    color: var(--gold);
    font-size: 28px;
    margin-bottom: 12px;
}

.auth-screen p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
    line-height: 1.6;
}

.auth-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    max-width: 700px;
}

.auth-feature {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.auth-feature .icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.auth-feature h3 {
    color: var(--gold-light);
    font-size: 14px;
    margin-bottom: 6px;
}

.auth-feature p {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 0;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-gold {
    background: var(--gold);
    color: #fff;
}
.btn-gold:hover { background: var(--gold-light); transform: translateY(-1px); }

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

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.1); }

.btn-success {
    background: var(--success);
    color: #fff;
}
.btn-success:hover { background: #16a34a; }

.btn-info {
    background: transparent;
    color: var(--info);
    border: 1px solid var(--info);
}
.btn-info:hover { background: rgba(59, 130, 246, 0.1); }

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── Tabs ── */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--dark-card);
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.tab {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: transparent;
    color: var(--text-muted);
    transition: all 0.2s;
}

.tab.active {
    background: var(--gold);
    color: #fff;
}
.tab:hover:not(.active) { color: var(--text-primary); background: var(--dark-surface); }

/* ── Search ── */
.search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.search-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}
.search-input:focus { border-color: var(--gold); }
.search-input::placeholder { color: var(--text-muted); }

.search-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.toggle-switch {
    position: relative;
    width: 36px;
    height: 20px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--dark-border);
    border-radius: 10px;
    transition: 0.2s;
}

.toggle-slider:before {
    content: "";
    position: absolute;
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: 0.2s;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--gold);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(16px);
}

/* ── Email List ── */
.email-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.email-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s;
}
.email-item:hover {
    border-color: var(--gold);
    background: rgba(201, 150, 60, 0.05);
}

.email-from {
    min-width: 180px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.email-subject {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.email-snippet {
    display: none;
}

.email-date {
    min-width: 120px;
    text-align: right;
    font-size: 12px;
    color: var(--text-muted);
}

/* ── Thread View ── */
.thread-view {
    display: none;
}

.thread-view.active {
    display: block;
}

.thread-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.thread-header h2 {
    font-size: 18px;
    color: var(--gold);
}

.thread-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.message-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid var(--dark-border);
}

.message-from { font-weight: 600; font-size: 13px; }
.message-date { font-size: 12px; color: var(--text-muted); }

.message-body {
    padding: 16px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
}

/* ── Panels (Analysis, Document, Draft) ── */
.panel {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 24px;
    margin-top: 20px;
}

.panel h3 {
    color: var(--gold);
    margin-bottom: 16px;
    font-size: 16px;
}

.panel-content {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 14px;
}

.panel-content h1, .panel-content h2, .panel-content h3, .panel-content h4 {
    color: var(--gold-light);
    margin: 16px 0 8px;
}

.panel-content ul, .panel-content ol {
    padding-left: 20px;
    margin: 8px 0;
}

.panel-content li { margin: 4px 0; }

.analysis-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.analysis-card {
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    padding: 16px;
}

.analysis-card h4 {
    color: var(--gold);
    font-size: 13px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.badge-gold { background: var(--gold-dim); color: var(--gold); }
.badge-red { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-green { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-blue { background: rgba(59, 130, 246, 0.15); color: var(--info); }

/* ── Draft Compose ── */
.compose-area {
    margin-top: 20px;
}

.compose-field {
    margin-bottom: 12px;
}

.compose-field label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.compose-field input, .compose-field textarea, .compose-field select {
    width: 100%;
    padding: 10px 14px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
}

.compose-field input:focus, .compose-field textarea:focus, .compose-field select:focus {
    border-color: var(--gold);
}

.compose-field textarea {
    min-height: 200px;
    resize: vertical;
    line-height: 1.6;
}

.compose-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 16px;
}

/* ── Loading / Status ── */
.loading {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--dark-border);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .auth-features { grid-template-columns: 1fr; }
    .analysis-grid { grid-template-columns: 1fr; }
    .email-from { min-width: 100px; }
    .email-date { display: none; }
    .container { padding: 16px; }
    .thread-actions { flex-wrap: wrap; }
}