:root {
    --bg-deep: #060a12;
    --bg-panel: rgba(14, 20, 34, 0.72);
    --bg-panel-strong: rgba(18, 26, 44, 0.9);
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #f4f7ff;
    --text-muted: #9aa8c7;
    --accent: #ff7a1a;
    --accent-soft: rgba(255, 122, 26, 0.18);
    --accent-glow: rgba(255, 122, 26, 0.35);
    --success: #3dd68c;
    --danger: #ff6b6b;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --font: "DM Sans", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg-deep);
}

a {
    color: var(--accent);
}

.glass-panel {
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #111;
    background: linear-gradient(135deg, #ffb347, var(--accent));
    box-shadow: 0 0 30px var(--accent-glow);
}

.brand-mark--sm {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: 0.85rem;
}

.brand-eyebrow {
    margin: 0;
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.85rem 1.25rem;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-primary {
    color: #111;
    background: linear-gradient(135deg, #ffb347, var(--accent));
    box-shadow: 0 10px 30px var(--accent-glow);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
}

.btn-ghost {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    text-decoration: none;
}

.btn-sm {
    padding: 0.55rem 0.9rem;
    font-size: 0.85rem;
}

.btn-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0, 0, 0, 0.15);
    border-top-color: #111;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.alert {
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    font-size: 0.92rem;
}

.alert-error {
    background: rgba(255, 107, 107, 0.12);
    border: 1px solid rgba(255, 107, 107, 0.35);
    color: #ffd0d0;
}

.field {
    display: grid;
    gap: 0.45rem;
    margin-bottom: 1rem;
}

.field span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.field input,
.filter-group select,
.filter-group input {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    padding: 0.8rem 0.95rem;
    font: inherit;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.filter-group select:focus,
.filter-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

/* Login */
.page-login {
    overflow: hidden;
}

.login-bg,
.dashboard-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.login-grid,
.dashboard-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
}

.login-glow {
    position: absolute;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}

.login-glow--left {
    top: 10%;
    left: -8%;
    background: var(--accent);
}

.login-glow--right {
    right: -10%;
    bottom: 8%;
    background: #2f6bff;
}

.login-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.login-card {
    width: min(100%, 440px);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.login-brand h1 {
    margin: 0.15rem 0 0;
    font-size: 1.45rem;
}

.login-subtitle {
    margin: 0 0 1.5rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.login-form {
    margin-top: 0.5rem;
}

/* Dashboard */
.page-dashboard {
    min-height: 100vh;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.25rem;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}

.topbar-left,
.topbar-right {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.topbar-title {
    margin: 0.15rem 0 0;
    font-size: 1rem;
}

.topbar-tabs {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
    justify-content: center;
}

.tab {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-muted);
    padding: 0.45rem 0.75rem;
    border-radius: 999px;
    font: inherit;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    cursor: pointer;
}

.tab.is-active {
    color: var(--text-primary);
    border-color: var(--border-glass);
    background: rgba(255, 255, 255, 0.05);
}

.live-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 12px rgba(61, 214, 140, 0.8);
    animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.dashboard-main {
    position: relative;
    z-index: 1;
    padding: 1.25rem;
    display: grid;
    gap: 1.25rem;
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    align-items: end;
    padding: 1rem;
    border-radius: var(--radius-md);
}

.filter-group {
    display: grid;
    gap: 0.35rem;
    min-width: 140px;
}

.filter-group label {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.filter-group--dates {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: end;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.85rem;
}

.kpi-card {
    border-radius: var(--radius-md);
    padding: 1rem 1.1rem;
}

.kpi-label {
    margin: 0;
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.kpi-value {
    margin: 0.45rem 0 0;
    font-size: 1.65rem;
    font-weight: 700;
}

.dashboard-section {
    display: grid;
    gap: 0.85rem;
}

.section-title {
    margin: 0;
    font-size: 0.95rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0.85rem;
}

.chart-grid--large {
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

.chart-card {
    border-radius: var(--radius-md);
    padding: 1rem;
    min-height: 280px;
    display: grid;
    grid-template-rows: auto 1fr;
}

.chart-card--wide {
    min-height: 360px;
}

.chart-card header h3 {
    margin: 0;
    font-size: 0.95rem;
}

.chart-wrap {
    position: relative;
    min-height: 220px;
    margin-top: 0.75rem;
}

.chart-wrap--doughnut {
    min-height: 240px;
    max-width: 320px;
    margin-inline: auto;
}

.chart-wrap--tall {
    min-height: 300px;
}

.empty-state {
    margin: 0.75rem 0 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.85rem;
}

.insight-card {
    border-radius: var(--radius-md);
    padding: 1rem 1.1rem;
    border-left: 3px solid var(--accent);
}

.insight-text {
    margin: 0;
    line-height: 1.55;
    color: var(--text-primary);
}

.skeleton {
    position: relative;
    overflow: hidden;
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    animation: shimmer 1.4s infinite;
}

@keyframes shimmer {
    100% { transform: translateX(100%); }
}

.is-loaded.skeleton::after {
    display: none;
}

@media (max-width: 900px) {
    .topbar {
        flex-direction: column;
        align-items: stretch;
    }

    .topbar-tabs {
        justify-content: flex-start;
    }

    .topbar-right {
        justify-content: space-between;
    }
}

@media (max-width: 600px) {
    .login-card,
    .dashboard-main {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group,
    .filter-group--dates {
        width: 100%;
    }
}