/* ============================================
   Market Dashboard — Style
   Dark fintech aesthetic with terminal touches
   ============================================ */

:root {
    /* Core palette */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2235;
    --bg-card-hover: #1f2a40;
    --bg-input: #0f1623;

    /* Borders */
    --border: #1e2d42;
    --border-focus: #3b82f6;

    /* Text */
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-heading: #f1f5f9;

    /* Accent */
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.15);

    /* Semantic */
    --profit: #10b981;
    --profit-bg: rgba(16, 185, 129, 0.1);
    --loss: #ef4444;
    --loss-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --neutral: #94a3b8;

    /* Typography */
    --font-body: 'DM Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --header-height: 56px;
    --radius: 8px;
    --radius-sm: 4px;
}

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

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

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

/* ---- Header ---- */
.main-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    height: var(--header-height);
    backdrop-filter: blur(12px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.logo-icon {
    font-size: 1.3rem;
    color: var(--accent);
}

.main-nav {
    display: flex;
    gap: 0.25rem;
    flex: 1;
}

.nav-link {
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.87rem;
    font-weight: 500;
    transition: all 0.15s ease;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.nav-link.active {
    color: var(--accent);
    background: var(--accent-glow);
}

.btn-logout {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.btn-logout:hover {
    color: var(--loss);
    background: var(--loss-bg);
}

/* ---- Main Content ---- */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    min-height: calc(100vh - var(--header-height) - 48px);
}

/* ---- Page Headers ---- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 0.87rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    transition: border-color 0.15s;
}

.card:hover {
    border-color: rgba(59, 130, 246, 0.2);
}

.card-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.card-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.card-value-sm {
    font-size: 1.1rem;
}

.card-change {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* ---- Tables ---- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-card);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.87rem;
}

th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    font-size: 0.73rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: var(--bg-card-hover);
}

td.mono {
    font-family: var(--font-mono);
    font-size: 0.83rem;
}

/* ---- Semantic Text ---- */
.text-profit { color: var(--profit); }
.text-loss { color: var(--loss); }
.text-warning { color: var(--warning); }
.text-neutral { color: var(--neutral); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-buy { background: var(--profit-bg); color: var(--profit); }
.badge-sell { background: var(--loss-bg); color: var(--loss); }
.badge-transfer { background: var(--accent-glow); color: var(--accent); }
.badge-stable { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); }
.badge-excluded { background: var(--warning-bg); color: var(--warning); }
.badge-exchange { background: var(--accent-glow); color: var(--accent); }
.badge-cold_wallet { background: var(--profit-bg); color: var(--profit); }
.badge-other { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    color: var(--text-heading);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
}

.btn-danger {
    color: var(--loss);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: var(--loss-bg);
    border-color: var(--loss);
    color: var(--loss);
}

.btn-sm {
    padding: 0.35rem 0.7rem;
    font-size: 0.78rem;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.6rem 0.85rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-input::placeholder { color: var(--text-muted); }

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

/* ---- Flash Messages ---- */
.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.87rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    border: 1px solid;
}

.flash-success { background: var(--profit-bg); border-color: rgba(16, 185, 129, 0.3); color: var(--profit); }
.flash-error   { background: var(--loss-bg);   border-color: rgba(239, 68, 68, 0.3);   color: var(--loss); }
.flash-warning { background: var(--warning-bg); border-color: rgba(245, 158, 11, 0.3); color: var(--warning); }
.flash-info    { background: var(--accent-glow); border-color: rgba(59, 130, 246, 0.3); color: var(--accent); }

/* ---- Stale Data Indicator ---- */
.stale-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--warning);
    padding: 0.25rem 0.6rem;
    background: var(--warning-bg);
    border-radius: 9999px;
}

.stale-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--warning);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* ---- Login Page ---- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo .logo-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.5rem;
}

.login-logo .logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-heading);
}

.login-error {
    background: var(--loss-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--loss);
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
}

/* ---- Footer ---- */
.main-footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .header-inner {
        padding: 0 1rem;
        gap: 1rem;
    }

    .main-nav {
        overflow-x: auto;
        scrollbar-width: none;
    }
    .main-nav::-webkit-scrollbar { display: none; }

    .nav-link {
        font-size: 0.8rem;
        padding: 0.4rem 0.65rem;
        white-space: nowrap;
    }

    .main-content {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}