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

:root {
    --ink: #0a0e1a;
    --deep: #111827;
    --slate: #1e293b;
    --muted: #64748b;
    --light: #94a3b8;
    --paper: #f1f5f9;
    --white: #ffffff;
    --signal: #f59e0b;
    --signal-dim: rgba(245, 158, 11, 0.15);
    --signal-glow: rgba(245, 158, 11, 0.4);
    --blue: #3b82f6;
    --blue-dim: rgba(59, 130, 246, 0.1);
    --red: #ef4444;
    --red-dim: rgba(239, 68, 68, 0.15);
    --green: #22c55e;
    --green-dim: rgba(34, 197, 94, 0.15);
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--ink);
    color: var(--paper);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

.grid-bg {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(245, 158, 11, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 158, 11, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none; z-index: 0;
}

.content { position: relative; z-index: 1; min-height: 100vh; }

/* Layout */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 240px; background: var(--deep); border-right: 1px solid var(--slate);
    padding: 24px 16px; display: flex; flex-direction: column;
    position: fixed; top: 0; bottom: 0; left: 0; z-index: 10;
}

.sidebar-logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700; font-size: 20px; color: var(--white);
    display: flex; align-items: center; gap: 10px;
    padding: 0 8px; margin-bottom: 32px; text-decoration: none;
}

.sidebar-logo .logo-icon {
    width: 28px; height: 28px; background: var(--signal);
    border-radius: 6px; display: flex; align-items: center;
    justify-content: center; font-size: 14px;
}

.sidebar-nav { flex: 1; }

.sidebar-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; border-radius: 8px; cursor: pointer;
    color: var(--light); font-size: 14px; font-weight: 500;
    transition: all 0.2s; margin-bottom: 4px; border: none;
    background: none; width: 100%; text-align: left;
}
.sidebar-item:hover { background: var(--slate); color: var(--white); }
.sidebar-item.active { background: var(--signal-dim); color: var(--signal); }

.sidebar-footer { padding-top: 16px; border-top: 1px solid var(--slate); }

.main-content {
    flex: 1; margin-left: 240px; padding: 32px 40px;
    max-width: calc(100% - 240px);
}

/* Page Header */
.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 32px;
}
.page-header h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 28px; font-weight: 700; color: var(--white);
}
.page-header p { color: var(--muted); font-size: 14px; margin-top: 4px; }

/* Cards */
.card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 12px; padding: 24px;
}

.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px; margin-bottom: 32px;
}

.stat-card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 12px; padding: 20px;
}
.stat-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 32px; font-weight: 700; color: var(--white); margin: 4px 0;
}
.stat-detail { font-size: 13px; color: var(--light); }

/* Buttons */
.btn {
    padding: 10px 20px; border-radius: 8px; border: none;
    font-weight: 600; font-size: 14px; cursor: pointer;
    font-family: inherit; transition: all 0.2s; display: inline-flex;
    align-items: center; gap: 8px;
}
.btn-primary { background: var(--signal); color: var(--ink); }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-secondary { background: var(--slate); color: var(--paper); }
.btn-secondary:hover { background: #2d3a4d; }
.btn-danger { background: var(--red-dim); color: var(--red); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.25); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-ghost { background: none; color: var(--light); padding: 6px 12px; }
.btn-ghost:hover { color: var(--white); background: var(--slate); }

/* Forms */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--light); margin-bottom: 6px; text-transform: uppercase;
    letter-spacing: 0.3px;
}
.form-input {
    width: 100%; padding: 12px 16px; background: var(--ink);
    border: 1px solid var(--slate); border-radius: 8px;
    color: var(--paper); font-size: 14px; font-family: inherit;
    transition: border-color 0.2s;
}
.form-input:focus { outline: none; border-color: var(--signal); }
.form-input::placeholder { color: var(--muted); }

/* Competitor List */
.competitor-list { display: flex; flex-direction: column; gap: 12px; }

.competitor-card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 12px; padding: 20px;
    display: flex; justify-content: space-between; align-items: center;
    transition: border-color 0.2s;
}
.competitor-card:hover { border-color: var(--signal); }

.competitor-info h3 { font-size: 16px; color: var(--white); font-weight: 600; }
.competitor-info .url { font-size: 13px; color: var(--muted); }
.competitor-info .status { font-size: 12px; margin-top: 4px; }
.status-active { color: var(--green); }
.status-pending { color: var(--signal); }
.status-error { color: var(--red); }

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

/* Briefing List */
.briefing-list { display: flex; flex-direction: column; gap: 12px; }

.briefing-card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 12px; padding: 20px; cursor: pointer;
    transition: border-color 0.2s;
}
.briefing-card:hover { border-color: var(--signal); }

.briefing-card-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 8px;
}
.briefing-card-date {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px; font-weight: 600; color: var(--white);
}
.briefing-card-badge {
    padding: 4px 12px; border-radius: 100px;
    font-size: 11px; font-weight: 600;
}
.badge-ready { background: var(--green-dim); color: var(--green); }
.badge-sent { background: var(--blue-dim); color: var(--blue); }
.badge-generating { background: var(--signal-dim); color: var(--signal); }
.badge-failed { background: var(--red-dim); color: var(--red); }

.briefing-card-summary { font-size: 14px; color: var(--light); }
.briefing-card-stats {
    display: flex; gap: 16px; margin-top: 8px; font-size: 12px; color: var(--muted);
}

/* Briefing Detail */
.briefing-detail { max-width: 800px; }
.briefing-detail h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px; color: var(--white); margin-bottom: 8px;
}
.briefing-detail .meta { color: var(--muted); font-size: 13px; margin-bottom: 24px; }

.briefing-items { display: flex; flex-direction: column; gap: 16px; }

.briefing-item {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 12px; padding: 20px;
}
.briefing-item-header {
    display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.significance-tag {
    padding: 2px 8px; border-radius: 4px;
    font-size: 11px; font-weight: 600; text-transform: uppercase;
}
.sig-high { background: var(--red-dim); color: var(--red); }
.sig-medium { background: var(--signal-dim); color: var(--signal); }
.sig-low { background: var(--blue-dim); color: var(--blue); }
.change-type { font-size: 12px; color: var(--muted); }

.briefing-item h3 { font-size: 16px; color: var(--white); margin-bottom: 4px; }
.briefing-item p { font-size: 14px; color: var(--light); line-height: 1.6; }

/* Auth Forms */
.auth-container {
    max-width: 420px; margin: 80px auto;
    padding: 0 24px;
}
.auth-card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 16px; padding: 40px;
}
.auth-card h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px; color: var(--white); margin-bottom: 8px;
}
.auth-card .subtitle { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.auth-switch { text-align: center; margin-top: 24px; font-size: 14px; color: var(--muted); }
.auth-switch a { color: var(--signal); text-decoration: none; font-weight: 600; cursor: pointer; }
.auth-switch a:hover { text-decoration: underline; }
.auth-error {
    background: var(--red-dim); color: var(--red);
    padding: 10px 16px; border-radius: 8px; font-size: 13px;
    margin-bottom: 16px; display: none;
}

/* Onboarding */
.onboarding-container {
    max-width: 600px; margin: 60px auto; padding: 0 24px;
}
.onboarding-card {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 16px; padding: 40px;
}
.onboarding-card h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px; color: var(--white); margin-bottom: 8px;
}
.onboarding-card .subtitle { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.competitor-input-row {
    display: flex; gap: 12px; margin-bottom: 12px;
    align-items: start;
}
.competitor-input-row .form-input { flex: 1; }
.competitor-input-row .name-input { max-width: 180px; }
.remove-competitor {
    background: none; border: none; color: var(--muted);
    cursor: pointer; padding: 12px 8px; font-size: 18px;
}
.remove-competitor:hover { color: var(--red); }
.add-more {
    background: none; border: 1px dashed var(--slate);
    color: var(--muted); padding: 12px; border-radius: 8px;
    width: 100%; cursor: pointer; font-family: inherit;
    font-size: 14px; margin-bottom: 24px; transition: all 0.2s;
}
.add-more:hover { border-color: var(--signal); color: var(--signal); }

/* Loading & Empty States */
.loading {
    display: flex; justify-content: center; padding: 48px;
    color: var(--muted);
}
.spinner {
    width: 32px; height: 32px; border: 3px solid var(--slate);
    border-top-color: var(--signal); border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
    text-align: center; padding: 48px 24px;
    color: var(--muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state h3 { color: var(--light); font-size: 18px; margin-bottom: 8px; }
.empty-state p { font-size: 14px; margin-bottom: 24px; }

/* Toast Notifications */
.toast-container {
    position: fixed; top: 24px; right: 24px; z-index: 1000;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    background: var(--deep); border: 1px solid var(--slate);
    border-radius: 8px; padding: 12px 20px; font-size: 14px;
    color: var(--paper); animation: slideIn 0.3s ease;
    max-width: 360px;
}
.toast-success { border-color: var(--green); }
.toast-error { border-color: var(--red); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; padding: 20px; max-width: 100%; }
    .mobile-header {
        display: flex; justify-content: space-between; align-items: center;
        padding: 16px 20px; border-bottom: 1px solid var(--slate);
        background: var(--deep);
    }
}