/* =========================================================================
 * Zoekworden — design system
 * Light + dark themes via CSS custom properties.
 * Tokens are scoped on :root; switching `data-theme` on <html> overrides
 * the system preference.
 * ========================================================================= */

:root {
    --surface: #f6f9ff;
    --surface-low: #eef4fc;
    --surface-lowest: #ffffff;
    --surface-high: #e3e9f1;
    --surface-highest: #dde3eb;
    --primary: #0058be;
    --primary-strong: #003c87;
    --primary-container: #2170e4;
    --secondary: #495e8a;
    --tertiary: #924700;
    --success: #0f9d58;
    --danger: #b00020;
    --warning: #f5a623;
    --text: #161c22;
    --text-soft: #424754;
    --text-muted: #6b7385;
    --outline: rgba(110, 122, 145, 0.18);
    --outline-soft: rgba(194, 198, 214, 0.4);
    --shadow-sm: 0 4px 14px rgba(22, 28, 34, 0.05);
    --shadow: 0 12px 40px rgba(22, 28, 34, 0.07);
    --shadow-lg: 0 24px 60px rgba(22, 28, 34, 0.10);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 24px;
    --container: 1200px;
    --header-height: 76px;
    --transition: 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --surface: #0d1117;
        --surface-low: #161c22;
        --surface-lowest: #1c242c;
        --surface-high: #2c333d;
        --surface-highest: #3a424c;
        --primary: #58a6ff;
        --primary-strong: #79b8ff;
        --primary-container: #1f6feb;
        --secondary: #8b9bb4;
        --tertiary: #f0883e;
        --text: #f0f3f6;
        --text-soft: #b0b8c4;
        --text-muted: #8b95a7;
        --outline: rgba(160, 170, 190, 0.18);
        --outline-soft: rgba(110, 118, 129, 0.3);
        --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
        --shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
    }
}

[data-theme="dark"] {
    --surface: #0d1117;
    --surface-low: #161c22;
    --surface-lowest: #1c242c;
    --surface-high: #2c333d;
    --surface-highest: #3a424c;
    --primary: #58a6ff;
    --primary-strong: #79b8ff;
    --primary-container: #1f6feb;
    --secondary: #8b9bb4;
    --tertiary: #f0883e;
    --text: #f0f3f6;
    --text-soft: #b0b8c4;
    --text-muted: #8b95a7;
    --outline: rgba(160, 170, 190, 0.18);
    --outline-soft: rgba(110, 118, 129, 0.3);
    --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.35);
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* ---- Reset / base ---- */
* { box-sizing: border-box; }
html { color-scheme: light dark; scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--surface);
    color: var(--text);
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
h1, h2, h3, .brand { font-family: "Manrope", sans-serif; margin: 0; letter-spacing: -0.01em; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; vertical-align: middle; }
button { font: inherit; cursor: pointer; }

::selection { background: rgba(33, 112, 228, 0.3); color: var(--text); }

/* ---- Skip link (a11y) ---- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 12px;
    padding: 10px 18px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    z-index: 100;
    font-weight: 700;
}
.skip-link:focus { left: 12px; outline: 3px solid rgba(255, 255, 255, 0.6); outline-offset: 2px; }

/* ---- Layout ---- */
.container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }
.page-shell { padding-top: calc(var(--header-height) + 16px); padding-bottom: 24px; }

/* ---- Header ---- */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 20;
    background: color-mix(in srgb, var(--surface-lowest) 86%, transparent);
    backdrop-filter: saturate(140%) blur(18px);
    -webkit-backdrop-filter: saturate(140%) blur(18px);
    border-bottom: 1px solid var(--outline);
}
.nav-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 0; min-height: var(--header-height); }
.brand {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 1.2rem; font-weight: 800; letter-spacing: -0.04em;
    color: var(--text);
}
.brand-mark {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: #fff;
}
.nav-links { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.nav-link {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 12px; border-radius: 10px;
    color: var(--text-soft); font-weight: 600; font-size: 0.92rem;
    transition: background var(--transition), color var(--transition);
}
.nav-link:hover { background: var(--surface-low); color: var(--primary); }
.nav-link.is-active { background: color-mix(in srgb, var(--primary) 12%, transparent); color: var(--primary); }
.nav-icon { display: inline-flex; }
.nav-link-secondary { padding: 8px 10px; }
.nav-user { color: var(--text-muted); font-weight: 600; font-size: 0.88rem; }
.logout-form { margin: 0; }

.lang-switcher {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 6px 4px 10px; margin: 0;
    border: 1px solid var(--outline); border-radius: 999px;
    background: var(--surface-lowest);
    transition: border-color var(--transition);
}
.lang-switcher:hover, .lang-switcher:focus-within { border-color: var(--primary); }
.lang-switcher-icon { color: var(--text-soft); display: inline-flex; }
.lang-switcher select {
    border: 0; background: transparent; color: var(--text);
    font: inherit; font-size: 0.85rem; font-weight: 700;
    padding: 4px 4px; cursor: pointer;
}
.lang-switcher select:focus { outline: none; }

/* ---- Sections / panels ---- */
.hero-section, .section { padding: 36px 0; }
.section-tight { padding-top: 12px; }
.section-heading { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.section-heading h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.05; letter-spacing: -0.04em; }
.section-heading h2 { font-size: 1.5rem; }
.section-heading p, .lead { color: var(--text-soft); max-width: 760px; }

.eyebrow {
    display: inline-flex; align-items: center; width: fit-content;
    padding: 5px 12px; border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary); font-size: 0.78rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
}

.panel {
    background: var(--surface-lowest);
    border-radius: var(--radius);
    border: 1px solid var(--outline);
    box-shadow: var(--shadow-sm);
    padding: 24px;
}
.panel-wide { min-width: 0; }
.panel-accent {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
    color: #ffffff; border: none;
}
.panel-accent .lead, .panel-accent .panel-subtitle, .panel-accent p { color: rgba(255, 255, 255, 0.86); }
.panel-accent a { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
.panel-header { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 18px; flex-wrap: wrap; }
.panel-header h2 { font-size: 1.2rem; }
.panel-subtitle { margin: 4px 0 0; color: var(--text-soft); font-size: 0.92rem; }

.chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 5px 10px; border-radius: 999px;
    background: var(--surface-high); color: var(--text-soft);
    font-size: 0.78rem; font-weight: 700;
}
.chip-on-accent { background: rgba(255, 255, 255, 0.2); color: #fff; }
.chip-success { background: color-mix(in srgb, var(--success) 16%, transparent); color: var(--success); }
.chip-danger { background: color-mix(in srgb, var(--danger) 16%, transparent); color: var(--danger); }
.chip-warning { background: color-mix(in srgb, var(--warning) 22%, transparent); color: var(--tertiary); }

/* ---- Hero ---- */
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 24px; align-items: stretch; }
.hero-copy { padding: 12px 0; display: flex; flex-direction: column; gap: 14px; }
.hero-form, .dashboard-form {
    display: grid; grid-template-columns: 1fr 220px auto; gap: 12px;
    margin-top: 18px;
}
.field-group { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-group label { font-size: 0.85rem; font-weight: 700; color: var(--text-soft); }
.field-input, .field-select {
    width: 100%; padding: 12px 14px; border-radius: var(--radius);
    border: 1px solid var(--outline);
    background: var(--surface-lowest); color: var(--text);
    font: inherit; font-size: 0.95rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.field-input:hover, .field-select:hover { border-color: var(--primary-container); }
.field-input:focus, .field-select:focus,
.field-input:focus-visible, .field-select:focus-visible {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 18%, transparent);
}
.field-help { margin: 4px 0 0; color: var(--text-muted); font-size: 0.82rem; }
.field-error { margin: 4px 0 0; color: var(--danger); font-weight: 600; font-size: 0.85rem; }

/* ---- Buttons ---- */
.button {
    display: inline-flex; justify-content: center; align-items: center; gap: 8px;
    padding: 12px 18px; border: 0; border-radius: 12px;
    font-weight: 700; font-size: 0.95rem;
    transition: transform var(--transition), filter var(--transition), box-shadow var(--transition), background var(--transition);
}
.button-compact { padding: 8px 14px; font-size: 0.85rem; }
.button-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    box-shadow: 0 6px 18px color-mix(in srgb, var(--primary) 30%, transparent);
}
.button-primary:hover { transform: translateY(-1px); filter: brightness(1.06); box-shadow: 0 12px 26px color-mix(in srgb, var(--primary) 40%, transparent); }
.button-primary:active { transform: translateY(0); filter: brightness(0.96); }
.button-light { background: var(--surface-lowest); color: var(--primary); border: 1px solid var(--outline); }
.button-light:hover { background: var(--surface-low); transform: translateY(-1px); }
.button-ghost { background: transparent; color: var(--text-soft); }
.button-ghost:hover { background: var(--surface-low); color: var(--primary); }
.button:focus-visible { outline: 3px solid color-mix(in srgb, var(--primary) 45%, transparent); outline-offset: 2px; }

.button-group { display: inline-flex; gap: 0; padding: 4px; border-radius: 12px; background: var(--surface-low); border: 1px solid var(--outline); }
.button-group .button-toggle {
    background: transparent; color: var(--text-soft);
    padding: 6px 14px; border-radius: 8px; font-size: 0.85rem;
    transition: background var(--transition), color var(--transition);
}
.button-group .button-toggle.is-active { background: var(--surface-lowest); color: var(--primary); box-shadow: var(--shadow-sm); }
.button-group .button-toggle:hover { color: var(--primary); }

/* ---- Service / metric / video cards ---- */
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.card-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.service-card {
    display: flex; flex-direction: column; gap: 10px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card h3 { font-size: 1.15rem; }
.service-card p { color: var(--text-soft); margin: 0; }
.service-card .card-cta { margin-top: auto; color: var(--primary); font-weight: 700; font-size: 0.9rem; }
.service-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--primary) 35%, var(--outline)); }

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 20px; }
.metric-card { display: flex; flex-direction: column; gap: 8px; min-height: 130px; }
.metric-label { color: var(--text-soft); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; font-weight: 700; }
.metric-value { font-size: 1.95rem; font-weight: 800; line-height: 1.1; font-family: "Manrope", sans-serif; }
.metric-delta {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 8px; border-radius: 999px;
    font-size: 0.78rem; font-weight: 700;
    width: fit-content;
}
.metric-delta-up { background: color-mix(in srgb, var(--success) 16%, transparent); color: var(--success); }
.metric-delta-down { background: color-mix(in srgb, var(--danger) 16%, transparent); color: var(--danger); }
.metric-delta-flat { background: var(--surface-high); color: var(--text-muted); }

/* ---- Insight / banners ---- */
.insight-banner {
    display: flex; justify-content: space-between; align-items: center; gap: 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: #fff; padding: 28px; border-radius: var(--radius-lg);
}
.insight-banner h2 { color: #fff; }
.insight-banner p { color: rgba(255, 255, 255, 0.86); margin: 6px 0 0; }
.callout {
    margin-top: 14px; padding: 14px 16px; border-radius: var(--radius);
    background: var(--surface-lowest); color: var(--text);
}

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0 10px; }
.data-table th { text-align: left; padding: 6px 14px; font-size: 0.74rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; }
.data-table td { background: var(--surface-low); padding: 14px; vertical-align: middle; }
.data-table tr:hover td { background: color-mix(in srgb, var(--primary) 6%, var(--surface-low)); }
.data-table td:first-child { border-top-left-radius: 12px; border-bottom-left-radius: 12px; font-weight: 700; }
.data-table td:last-child { border-top-right-radius: 12px; border-bottom-right-radius: 12px; }
.data-table .col-numeric { text-align: right; font-variant-numeric: tabular-nums; }
.data-table .col-sparkline { width: 140px; }

.sparkline-host { width: 120px; height: 32px; display: block; }
.sparkline-empty { color: var(--text-muted); font-size: 0.85rem; }

/* ---- Chart hosts ---- */
.chart-host {
    position: relative;
    width: 100%; height: 320px;
    margin-top: 4px;
}
.chart-host-tall { height: 380px; }
.chart-host-compact { height: 220px; }
.chart-host canvas { max-width: 100%; }

@media (max-width: 860px) {
    .chart-host { height: 260px; }
    .chart-host-tall { height: 300px; }
    .chart-host-compact { height: 200px; }
}
@media (max-width: 480px) {
    .chart-host { height: 220px; }
    .chart-host-tall { height: 260px; }
}

.chart-skeleton {
    border-radius: var(--radius);
    background: linear-gradient(
        90deg,
        var(--surface-low) 0%,
        var(--surface-high) 50%,
        var(--surface-low) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.6s ease-in-out infinite;
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
@media (prefers-reduced-motion: reduce) {
    .chart-skeleton { animation: none; background: var(--surface-high); }
}

/* ---- Summary card (marketing snapshot) ---- */
.summary-card {
    display: grid; gap: 18px;
    grid-template-columns: 1.6fr 1fr;
    padding: 22px;
    background: var(--surface-lowest);
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 22px;
}
.summary-card h3 { font-size: 1.15rem; margin-bottom: 4px; }
.summary-card .summary-headline { color: var(--text-soft); font-size: 0.92rem; }
.summary-stats { display: grid; gap: 10px; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 12px; }
.summary-stat { padding: 10px 12px; background: var(--surface-low); border-radius: var(--radius-sm); }
.summary-stat .stat-label { color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.68rem; font-weight: 700; }
.summary-stat .stat-value { font-size: 1.2rem; font-weight: 800; font-family: "Manrope", sans-serif; }
.summary-actions { display: flex; flex-direction: column; gap: 10px; align-items: stretch; }
.summary-actions .button { width: 100%; }
.summary-toast {
    position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
    padding: 10px 18px; border-radius: 999px;
    background: var(--text); color: var(--surface-lowest);
    font-weight: 600; font-size: 0.88rem;
    box-shadow: var(--shadow-lg);
    opacity: 0; pointer-events: none; transition: opacity 200ms ease, transform 200ms ease;
    z-index: 50;
}
.summary-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(-6px); }

/* ---- Misc ---- */
.alert { margin: 12px 0; padding: 12px 16px; border-radius: var(--radius); background: color-mix(in srgb, var(--primary) 10%, transparent); color: var(--primary); font-weight: 600; }
.alert.alert-warning { background: color-mix(in srgb, var(--warning) 14%, transparent); color: var(--tertiary); }
.alert.alert-danger { background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }
.empty-state { padding: 32px; text-align: center; color: var(--text-muted); display: flex; flex-direction: column; align-items: center; gap: 12px; }
.empty-state svg { color: var(--text-muted); opacity: 0.6; }

.form-errors { padding: 12px 16px; border-radius: var(--radius); background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); font-weight: 600; }
.auth-panel { padding: 32px; }
.auth-form { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.auth-form button { align-self: flex-start; }
.auth-alt { margin-top: 14px; color: var(--text-soft); }
.auth-alt a, .field-help a { color: var(--primary); font-weight: 700; }
.auth-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }
.narrow-container { max-width: 540px; margin: 0 auto; }
.pagination { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; align-items: center; }
.region-code { font-style: normal; margin-left: 6px; padding: 2px 6px; border-radius: 6px; background: var(--surface-high); color: var(--text-soft); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }
.link-action { color: var(--primary); font-weight: 700; }
.link-action:hover { text-decoration: underline; text-underline-offset: 3px; }
.ordered-list { margin: 0; padding-left: 18px; }
.ordered-list li { margin-bottom: 8px; }

/* ---- YouTube video cards ---- */
.video-card { padding: 14px; transition: transform var(--transition), box-shadow var(--transition); display: flex; flex-direction: column; gap: 10px; }
.video-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.video-link { display: block; color: inherit; }
.video-link h3 { margin-top: 4px; font-size: 1rem; line-height: 1.35; min-height: 2.7em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-thumb {
    position: relative; display: block; height: 168px; padding: 0;
    border-radius: var(--radius);
    background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 18%, transparent), color-mix(in srgb, var(--secondary) 26%, transparent));
    background-size: cover; background-position: center;
    overflow: hidden;
}
.video-thumb-img { background-color: #000; }
.video-rank, .video-duration { position: absolute; padding: 4px 9px; border-radius: 8px; background: rgba(0, 0, 0, 0.72); color: #fff; font-size: 0.74rem; font-weight: 700; }
.video-rank { top: 8px; left: 8px; }
.video-duration { bottom: 8px; right: 8px; font-variant-numeric: tabular-nums; }
.video-meta { display: flex; gap: 12px; color: var(--text-muted); font-size: 0.82rem; flex-wrap: wrap; }

/* ---- Footer ---- */
.site-footer { margin-top: 48px; background: var(--surface-low); border-top: 1px solid var(--outline); }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 24px 0; flex-wrap: wrap; }
.footer-copy { color: var(--text-soft); margin: 6px 0 0; }
.footer-links { display: flex; gap: 16px; color: var(--text-muted); font-size: 0.88rem; flex-wrap: wrap; }

/* ---- Layouts ---- */
.overview-grid, .dashboard-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; align-items: stretch; }
.timeline-stack, .sidebar-stack, .trend-list { display: flex; flex-direction: column; gap: 16px; }
.timeline-label-row, .trend-row { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.progress-track { width: 100%; height: 8px; background: var(--surface-high); border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(135deg, var(--primary), var(--primary-container)); }
.source-fill-search_terms { background: linear-gradient(135deg, #0058be, #2170e4); }
.source-fill-trends { background: linear-gradient(135deg, #924700, #c56a1e); }
.source-fill-youtube { background: linear-gradient(135deg, #b00020, #e63253); }

/* ---- Responsive ---- */
@media (max-width: 1080px) {
    .hero-grid, .overview-grid, .dashboard-grid, .metric-grid, .card-grid-three, .card-grid-four { grid-template-columns: 1fr; }
    .summary-card { grid-template-columns: 1fr; }
    .summary-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
    .nav-row { flex-direction: column; align-items: flex-start; padding: 12px 0; }
    .nav-links { width: 100%; }
    .insight-banner { flex-direction: column; align-items: flex-start; }
    .hero-form, .dashboard-form { grid-template-columns: 1fr; }
    .page-shell { padding-top: calc(var(--header-height) + 60px); }
}
@media (max-width: 480px) {
    .summary-stats { grid-template-columns: 1fr; }
    .data-table th, .data-table td { padding: 10px; font-size: 0.85rem; }
}

/* ---- Print ---- */
@media print {
    .site-header, .site-footer, .lang-switcher, .button, .skip-link { display: none !important; }
    .panel { box-shadow: none; border: 1px solid #ddd; break-inside: avoid; }
    body { background: #fff; color: #000; }
}
