/* ============================================
   iGaming SEO Analytics Dashboard
   Grafana-style Theme System
   ============================================ */

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

/* --- Theme Variables --- */
:root {
    /* Dark theme (default) */
    --bg-canvas: #111217;
    --bg-primary: #181b1f;
    --bg-secondary: #1e2028;
    --bg-card: #222533;
    --bg-card-hover: #2a2d3a;
    --bg-input: #2c2f3e;
    --bg-tooltip: #2a2d3a;

    --text-primary: #d8dee9;
    --text-secondary: #8b92a5;
    --text-muted: #5a6178;
    --text-link: #6e9fff;

    --border-color: #2c2f3e;
    --border-light: #353849;

    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-muted: rgba(59, 130, 246, 0.15);

    --success: #22c55e;
    --success-muted: rgba(34, 197, 94, 0.15);
    --warning: #f59e0b;
    --warning-muted: rgba(245, 158, 11, 0.15);
    --error: #ef4444;
    --error-muted: rgba(239, 68, 68, 0.15);
    --info: #06b6d4;
    --info-muted: rgba(6, 182, 212, 0.15);
    --purple: #a855f7;
    --purple-muted: rgba(168, 85, 247, 0.15);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    --sidebar-width: 220px;
    --topbar-height: 48px;
    --transition: 0.2s ease;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 13px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 28px;
}

[data-theme="light"] {
    --bg-canvas: #f0f2f5;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fb;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f6f8;
    --bg-input: #f0f2f5;
    --bg-tooltip: #1e2028;

    --text-primary: #1a1d2e;
    --text-secondary: #5a6178;
    --text-muted: #9ca3b8;
    --text-link: #3b82f6;

    --border-color: #e2e5ed;
    --border-light: #ebedf2;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* --- Base Styles --- */
html {
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* --- Layout Grid --- */
.app-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-rows: var(--topbar-height) 1fr;
    grid-template-areas:
        "sidebar topbar"
        "sidebar content";
    height: 100vh;
    width: 100vw;
}

/* --- Top Bar --- */
.topbar {
    grid-area: topbar;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
}

.topbar__left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar__breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.topbar__breadcrumb span {
    color: var(--text-primary);
    font-weight: 500;
}

.topbar__right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar__btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.topbar__btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
    background: var(--bg-card-hover);
}

.topbar__btn--active {
    background: var(--accent-muted);
    border-color: var(--accent);
    color: var(--accent);
}

/* --- Sidebar --- */
.sidebar {
    grid-area: sidebar;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 200;
}

.sidebar__logo {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
    font-size: var(--font-size-md);
    color: var(--text-primary);
    letter-spacing: -0.3px;
    gap: 10px;
    flex-shrink: 0;
}

.sidebar__logo-icon {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--accent), var(--purple));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.sidebar__section {
    padding: 12px 8px 4px;
}

.sidebar__section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 0 8px 8px;
}

.sidebar__nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    user-select: none;
}

.sidebar__link:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.sidebar__link--active {
    background: var(--accent-muted);
    color: var(--accent);
}

.sidebar__link-icon {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.sidebar__link-badge {
    margin-left: auto;
    background: var(--bg-input);
    color: var(--text-muted);
    padding: 1px 6px;
    border-radius: 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.sidebar__link--active .sidebar__link-badge {
    background: var(--accent-muted);
    color: var(--accent);
}

/* --- Content Area --- */
.content {
    grid-area: content;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-light) transparent;
}

.content::-webkit-scrollbar {
    width: 6px;
}
.content::-webkit-scrollbar-track {
    background: transparent;
}
.content::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

/* --- Page Header --- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.page-header__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.page-header__subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: 2px;
}

.page-header__actions {
    display: flex;
    gap: 8px;
}

/* --- Grid Layouts --- */
.grid-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.grid-charts-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.grid-charts-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.grid-charts-2-1 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.grid-charts-1-2 {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 12px;
    margin-bottom: 16px;
}

.grid-full {
    margin-bottom: 16px;
}

/* --- Utility --- */
.mono {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }

.hidden { display: none !important; }

/* --- Responsive --- */
@media (max-width: 1200px) {
    .grid-charts-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
        grid-template-areas:
            "topbar"
            "content";
    }
    .sidebar {
        position: fixed;
        left: -var(--sidebar-width);
        top: 0;
        bottom: 0;
        width: var(--sidebar-width);
        transition: left var(--transition);
    }
    .sidebar--open {
        left: 0;
    }
    .grid-charts-2,
    .grid-charts-2-1,
    .grid-charts-1-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .grid-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}