/* ============================================================
   Cyber Pubquiz — base design system (Cyberperspectief huisstijl)
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=League+Spartan:wght@400;500;600;700&family=Open+Sans:wght@400;500;600;700&display=swap');
/* TODO(prod): vendor fonts locally in /static/fonts to avoid Google CDN (GDPR). */

:root {
    --color-bg: #FFFFFF;
    --color-bg-alt: #f8f8fc;
    --color-accent: #ff4a36;
    --color-accent-hover: #e5432f;
    --color-accent-light: rgba(255, 74, 54, 0.1);

    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-text-muted: #8888a0;
    --color-text-on-dark: #e8e8f0;
    --color-text-on-accent: #FFFFFF;

    --color-border: #e0e0e8;
    --color-border-light: #f0f0f4;
    --color-surface: #f8f8fc;
    --color-surface-hover: #f0f0f6;
    --color-card: #FFFFFF;

    /* Sidebar is always dark, in both themes (matches the other Cyber apps) */
    --color-bg-sidebar: #000029;
    --color-bg-sidebar-active: #0a0a3f;

    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Kahoot-style answer colors */
    --answer-1: #e63946;
    --answer-2: #457b9d;
    --answer-3: #f4a261;
    --answer-4: #2a9d8f;
    --answer-5: #9b5de5;
    --answer-6: #ffca3a;

    --font-heading: 'League Spartan', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 4rem;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 20, 0.06);
    --shadow-md: 0 2px 8px rgba(0, 0, 20, 0.08);
}

[data-theme="dark"] {
    color-scheme: dark;
    /* Hierarchy: sidebar darkest, page above it, cards/surfaces lightest. */
    --color-bg: #000029;          /* navy page */
    --color-bg-alt: #0d1235;      /* raised surface */
    --color-text-primary: #e8e8f2;
    --color-text-secondary: #8080a8;
    --color-text-muted: #5a5a7a;
    --color-border: #1e2045;
    --color-border-light: #161840;
    --color-surface: #0d1235;
    --color-surface-hover: #161840;
    --color-card: #0d1235;

    --color-bg-sidebar: #00001f;  /* darkest element */
    --color-bg-sidebar-active: #1a1a4a;

    --shadow-sm: 0 1px 3px rgba(0, 0, 20, 0.30);
    --shadow-md: 0 4px 16px rgba(0, 0, 20, 0.40);
}

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

html, body { height: 100%; }

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    transition: background 0.2s ease, color 0.2s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

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

/* ---------------- Buttons ---------------- */
.btn {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    line-height: 1;
}
.btn-primary { background: var(--color-accent); color: var(--color-text-on-accent); }
.btn-primary:hover { background: var(--color-accent-hover); transform: translateY(-1px); color: #fff; }
.btn-secondary { background: transparent; color: var(--color-accent); border: 2px solid var(--color-accent); }
.btn-secondary:hover { background: var(--color-accent-light); }
.btn-ghost { background: transparent; color: var(--color-text-secondary); }
.btn-ghost:hover { background: var(--color-surface-hover); }
.btn-danger { background: var(--color-error); color: #fff; }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); }
.btn-sm { padding: var(--space-2) var(--space-3); font-size: var(--text-sm); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }

/* ---------------- Cards ---------------- */
.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
}
.card-hover { transition: all 0.15s ease; }
.card-hover:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }

/* ---------------- Forms ---------------- */
.input, .textarea, select.input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: var(--text-base);
    background: var(--color-card);
    color: var(--color-text-primary);
    transition: border-color 0.15s ease;
}
.input:focus, .textarea:focus, select.input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}
.textarea { min-height: 90px; resize: vertical; }
.label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: var(--text-sm);
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
}
.field { margin-bottom: var(--space-4); }
.help { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }

.checkbox-row { display: flex; align-items: center; gap: var(--space-2); }
.checkbox-row input { width: 18px; height: 18px; accent-color: var(--color-accent); }

/* ---------------- Utilities ---------------- */
.container { max-width: 1100px; margin: 0 auto; padding: var(--space-8) var(--space-4); }
.row { display: flex; gap: var(--space-4); }
.row-wrap { flex-wrap: wrap; }
.between { justify-content: space-between; }
.center { align-items: center; }
.grow { flex: 1; }
.grid { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.muted { color: var(--color-text-muted); }
.secondary { color: var(--color-text-secondary); }
.tag {
    display: inline-block; font-size: var(--text-xs); font-weight: 600;
    padding: 2px 8px; border-radius: var(--radius-full);
    background: var(--color-accent-light); color: var(--color-accent);
    text-transform: uppercase; letter-spacing: 0.03em;
}
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); }
.text-center { text-align: center; }

/* ---------------- Flash messages ---------------- */
.flashes { position: fixed; top: var(--space-4); right: var(--space-4); z-index: 1000; display: flex; flex-direction: column; gap: var(--space-2); }
.flash {
    padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
    background: var(--color-surface); border-left: 4px solid var(--color-info);
    box-shadow: var(--shadow-md); font-size: var(--text-sm); max-width: 340px;
}
.flash-success { border-color: var(--color-success); }
.flash-error { border-color: var(--color-error); }
.flash-warning { border-color: var(--color-warning); }

/* ---------------- Theme toggle ---------------- */
.theme-toggle {
    background: transparent; border: 1px solid var(--color-border);
    color: var(--color-text-secondary); border-radius: var(--radius-full);
    width: 38px; height: 38px; cursor: pointer; font-size: var(--text-lg);
    display: inline-flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* Sidebar theme toggle: swap moon/sun by active theme */
.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }
[data-theme="dark"] .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-icon-sun { display: block; }

/* ---------------- Progress / timer bar ---------------- */
.timer-bar { height: 10px; background: var(--color-border-light); border-radius: var(--radius-full); overflow: hidden; }
.timer-bar-fill { height: 100%; background: var(--color-accent); width: 100%; transition: width 0.1s linear; }