:root {
    --primary-color: #0f1724;        /* Çok koyu gri-mavi */
    --secondary-color: #223052;      /* Derin mavi */
    --accent-color: #ffd166;         /* Yumuşak altın */
    --accent-2: #7c4dff;             /* morlu vurgular */
    --correct-answer: #22c55e;       /* canlı yeşil */
    --wrong-answer: #f97316;         /* parlak turuncu */
    --background-gradient: linear-gradient(135deg, #071126, #0b1530 60%);
    --text-color: #e6eef8;
    --muted-text: rgba(230,238,248,0.7);
    --card-bg: rgba(255,255,255,0.04);
    --card-shadow: 0 6px 24px rgba(2,6,23,0.6);
    --glass-border: rgba(255,255,255,0.04);
    --glass-bg: rgba(255,255,255,0.06);
    --glass-bg-2: rgba(255,255,255,0.03);
    --glass-blur: 10px;
    --glass-border-strong: rgba(255,255,255,0.08);
    --glass-inner-shadow: rgba(2,6,23,0.35);
    --theme-transition: 320ms;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    background: var(--background-gradient);
    color: var(--text-color);
    min-height: 100vh;
    overflow-y: auto; 
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* Merkezi kart görünümü */
.main-grid {
    display: grid;
    grid-template-columns: 1.25fr 260px;
    gap: 24px;
    align-items: start;
}

/* Üst bar (Header) */
.top-bar {
    width: 100%;
    max-width: 1200px;
    margin: 10px auto;
    background: linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    border: 1px solid rgba(255,255,255,0.04);
    backdrop-filter: blur(calc(var(--glass-blur) + 4px)) saturate(130%);
    color: var(--text-color);
    padding: 14px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    box-shadow: 0 12px 46px rgba(2,6,23,0.52);
    position: sticky;
    top: 12px;
    z-index: 120;
    border-radius: 16px;
    transition: transform 220ms ease, box-shadow 320ms ease;
}

.top-bar::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 12px;
    bottom: 12px;
    width: 6px;
    border-radius: 8px;
    background: linear-gradient(180deg, var(--accent-2), var(--accent-color));
    opacity: 0.12;
    pointer-events: none;
}

.top-bar h1 {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.2px;
}

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

.logo {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--accent-color), #ffd97a 60%);
    box-shadow: 0 12px 28px rgba(2,6,23,0.45), inset 0 1px 0 rgba(255,255,255,0.28);
    font-size: 15px;
    transform: translateZ(0);
}

.logo img {
    display: block;
    max-width: 44px;
    max-height: 44px;
    width: auto;
    height: auto;
    border-radius: 8px;
}

.title-wrap {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.title-wrap h1 {
    margin: 0;
}

.title-wrap .tagline {
    font-size: 11px;
    color: var(--muted-text);
    font-weight: 600;
    margin-top: 3px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
    padding: 6px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.03);
    box-shadow: 0 6px 18px rgba(2,6,23,0.28);
}

/* Theme toggle */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border-radius: 12px;
    padding: 6px;
    cursor: pointer;
    color: var(--muted-text);
    font-weight: 700;
}
.theme-toggle input { display: none; }

/* Toggle icons (sun / moon) */
.theme-toggle .icon {
    display: inline-flex;
    width: 18px;
    height: 18px;
    align-items: center;
    justify-content: center;
    transition: opacity var(--theme-transition) ease, transform var(--theme-transition) ease;
    opacity: 0;
}

.theme-toggle .icon svg {
    width: 18px;
    height: 18px;
    display: block;
    fill: currentColor;
}

/* Default (dark) shows moon */
.theme-toggle .moon { opacity: 1; transform: rotate(0deg); }
.light-theme .theme-toggle .moon { opacity: 0; transform: rotate(-20deg); }
.light-theme .theme-toggle .sun { opacity: 1; transform: rotate(0deg); }
.theme-toggle .sun { opacity: 0; transform: rotate(20deg); }

/* Modern switch visuals */
.theme-toggle .switch {
    width: 56px;
    height: 30px;
    background: linear-gradient(180deg, rgba(124,77,255,0.12), rgba(124,77,255,0.06));
    border-radius: 999px;
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.02), 0 6px 14px rgba(2,6,23,0.35);
    transition: background-color var(--theme-transition) ease, box-shadow var(--theme-transition) ease, transform var(--theme-transition) ease;
}
.theme-toggle .switch .thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(180deg,#fff,#f1f5f9);
    box-shadow: 0 6px 12px rgba(2,6,23,0.35);
    transition: left var(--theme-transition) ease, transform var(--theme-transition) ease, background var(--theme-transition) ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
    overflow: hidden;
}

/* Light theme: move thumb to right and change track */
.light-theme .theme-toggle .switch {
    /* light mode: warm gold track */
    background: linear-gradient(180deg, rgba(255,209,102,0.95), rgba(255,184,77,0.95));
}
.light-theme .theme-toggle .switch .thumb {
    left: 30px;
    transform: translateX(0);
    background: linear-gradient(180deg,#fff,#fff);
}

/* Dark mode track (default) - purple accent */
.theme-toggle .switch {
    /* subtle purple glow for dark mode */
    background: linear-gradient(180deg, rgba(124,77,255,0.18), rgba(92,40,255,0.08));
}

/* Icons are now inside the thumb */
.theme-toggle .switch .thumb .icon {
    position: absolute;
    width: 14px;
    height: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--theme-transition) ease, transform var(--theme-transition) ease, color var(--theme-transition) ease;
    opacity: 0;
    color: var(--muted-text);
}

/* Place moon at center; sun overlays but will swap opacity */
.theme-toggle .switch .thumb .moon { transform: translateX(0); }
.theme-toggle .switch .thumb .sun { transform: translateX(0); }

/* In dark mode show moon, hide sun */
.theme-toggle .switch .thumb .moon { opacity: 1; color: var(--accent-2); }
.light-theme .theme-toggle .switch .thumb .moon { opacity: 0; transform: scale(0.85) rotate(-10deg); }

/* In light mode show sun inside the thumb */
.theme-toggle .switch .thumb .sun { opacity: 0; color: #ffffff; }
.light-theme .theme-toggle .switch .thumb .sun { opacity: 1; color: #25140a; transform: scale(1) rotate(0deg); }

/* Sparkle animation inside thumb */
.theme-toggle .switch .thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.12) 18%, rgba(255,255,255,0) 40%);
    transform: scale(0.9);
    opacity: 0.0;
    transition: opacity 240ms ease, transform 320ms ease;
    pointer-events: none;
}

@keyframes thumb-sparkle {
    0% { opacity: 0; transform: scale(0.9) rotate(0deg); }
    50% { opacity: 1; transform: scale(1.05) rotate(8deg); }
    100% { opacity: 0; transform: scale(0.95) rotate(-6deg); }
}

/* Trigger sparkle briefly when theme changes by applying animation class via CSS state */
.light-theme .theme-toggle .switch .thumb::after,
.theme-toggle .switch .thumb.active::after {
    animation: thumb-sparkle 900ms ease forwards;
}

/* Reduce motion: disable sparkle and other animations */
@media (prefers-reduced-motion: reduce) {
    .theme-toggle .switch .thumb::after,
    .theme-toggle .switch .thumb {
        transition: none !important;
        animation: none !important;
    }
}

/* icon-button removed per request */

.top-bar .start-button {
    background: linear-gradient(180deg, var(--accent-color), #ffb84d);
    color: #071126;
    border: none;
    padding: 8px 16px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    font-size: 13px;
    box-shadow: 0 6px 18px rgba(255,209,102,0.12);
}

.top-bar .start-button:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: scale(1.02) translateY(-2px);
}

/* Admin paneli */
.admin-panel {
    background: linear-gradient(180deg, var(--glass-bg), rgba(255,255,255,0.01));
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 10px 34px rgba(2,6,23,0.45);
    border: 1px solid var(--glass-border-strong);
    margin-bottom: 20px;
}

.admin-panel h2 {
    margin-bottom: 15px;
    color: var(--accent-color);
    font-size: 18px;
    font-weight: 600;
}

.file-upload {
    font-size: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload label {
    display: inline-block;
    background: linear-gradient(180deg, var(--accent-color), #ffc879);
    color: var(--primary-color);
    padding: 10px 18px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    font-size: 13px;
    box-shadow: 0 6px 16px rgba(255,200,100,0.08);
}

.file-upload label:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: translateY(-2px);
}

/* Lifelines */
.lifelines {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.lifeline {
    background: transparent;
    color: var(--text-color);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 10px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    transition: transform 0.14s ease, background 0.18s ease, color 0.18s ease;
}

/* Celebration canvas overlay */
#celebrationCanvas {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 2000;
    display: block;
}

.lifeline:hover:not(:disabled) {
    background: linear-gradient(180deg, rgba(124,77,255,0.14), rgba(124,77,255,0.06));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(124,77,255,0.12), 0 2px 6px rgba(2,6,23,0.25);
}

.lifeline:disabled {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
    color: #000;
}

.lifeline:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(124,77,255,0.12);
}

/* stronger visual for active/available lifelines */
.lifeline:not(:disabled) {
    border: 1px solid rgba(124,77,255,0.14);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}

/* Make lifelines more visible in light theme */
.light-theme .lifeline {
    background: linear-gradient(180deg, rgba(255,255,255,0.82), rgba(255,255,255,0.9));
    color: #111;
    border: 1px solid rgba(2,6,23,0.06);
}

/* Slightly larger lifeline buttons for emphasis */
.lifeline {
    padding: 10px 16px;
    font-size: 14px;
}

/* Oyun alanı */
.game-area {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* Masaüstünde soru alanını geniş, skor tablosunu dar yap */
.question-container {
    flex: 2; /* Soru alanını genişlet */
    background: linear-gradient(180deg, var(--glass-bg), rgba(255,255,255,0.01));
    backdrop-filter: blur(calc(var(--glass-blur) - 4px)) saturate(120%);
    border-radius: 14px;
    box-shadow: 0 14px 40px rgba(2,6,23,0.5), inset 0 1px 0 rgba(255,255,255,0.02);
    padding: 22px;
    position: relative;
    min-width: 360px; 
}

.prize-ladder {
    flex: 1; /* Skor tablosunu daralt */
    max-width: 240px; /* Masaüstünde daralt */
    background: linear-gradient(180deg, var(--glass-bg-2), rgba(255,255,255,0.01));
    border-radius: 12px;
    padding: 14px;
    border: 1px solid var(--glass-border-strong);
    box-shadow: 0 12px 36px rgba(2,6,23,0.45);
    max-height: 400px;
    overflow-y: auto;
}

.timer {
    font-size: 28px;
    text-align: center;
    margin-bottom: 18px;
    font-weight: 800;
    color: var(--accent-2);
    letter-spacing: 0.6px;
}

.level-display {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: #000;
    padding: 5px 10px;
    border-radius: 5px;
    font-weight: 600;
    font-size: 14px;
}

.question {
    font-size: 18px;
    margin-bottom: 18px;
    text-align: center;
    line-height: 1.45;
    font-weight: 700;
}

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

.option {
    background: linear-gradient(180deg, var(--glass-bg-2), rgba(255,255,255,0.01));
    padding: 14px 12px;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.18s ease;
    text-align: left;
    font-size: 14px;
    font-weight: 700;
    border: 1px solid var(--glass-border);
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: flex-start;
    color: var(--text-color);
    backdrop-filter: blur(6px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.02), 0 6px 18px rgba(2,6,23,0.35);
}

.option:hover:not(.disabled) {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(2,6,23,0.5);
    background: linear-gradient(90deg, rgba(255,209,102,0.14), rgba(124,77,255,0.08));
    color: var(--text-color);
}

.option.correct {
    background: var(--correct-answer) !important;
    color: #fff;
    border: none;
}

.option.wrong {
    background: var(--wrong-answer) !important;
    color: #fff;
    border: none;
}

.option.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    color: rgba(230,238,248,0.55);
}

/* Reduce motion accessibility */
@media (prefers-reduced-motion: reduce) {
    :root { --theme-transition: 0ms; }
    .option, .top-bar .start-button, .lifeline, .start-button, .theme-toggle .icon {
        transition: none !important;
    }
    .option:hover {
        transform: none !important;
        box-shadow: none !important;
    }
}

.option.hidden {
    display: none;
}

.option:focus {
    outline: 3px solid rgba(124,77,255,0.18);
    outline-offset: 3px;
}

.prize-level {
    font-size: 14px;
    padding: 5px 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    transition: background 0.3s ease, color 0.3s ease;
    display: flex;
    justify-content: space-between;
    gap: 8px;
}

.prize-level:last-child {
    border-bottom: none;
}

.prize-level.current {
    background: var(--accent-color);
    color: #000;
    font-weight: 600;
}

.prize-level.secured {
    background: var(--correct-answer);
    color: #fff;
    font-weight: 600;
}

.message-box {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(180deg, #ffffff, #f6f9ff);
    padding: 22px;
    border-radius: 12px;
    text-align: center;
    display: none;
    z-index: 300;
    width: 340px;
    max-width: 90%;
    box-shadow: 0 20px 44px rgba(2,6,23,0.6);
    color: var(--primary-color);
}

.message-box h2 {
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-color);
}

.message-box p {
    font-size: 14px;
    margin-bottom: 20px;
}

.message-box button {
    padding: 10px 20px;
    background: var(--accent-color);
    border: none;
    border-radius: 5px;
    color: #000;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 14px;
}

.message-box button:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .options {
        grid-template-columns: 1fr;
    }

    /* Mobilde skor tablosu eski değerlere dönüyor */
    /* Eski durumda skor tablosu genişlik kısıtlaması yoktu, 
       bu yüzden max-width kaldırılıyor ve flex ayarını eski haline getiriyoruz */
    .prize-ladder {
        flex: 1;
        max-width: none; 
        width: 100%;
        max-height: none;
        margin-top: 20px;
    }

    .game-area {
        flex-direction: column;
    }

    .main-grid {
        grid-template-columns: 1fr;
    }

    .level-display {
        font-size: 12px;
    }

    .question {
        font-size: 14px;
    }

    .top-bar h1 {
        font-size: 16px;
    }

    .top-bar .start-button {
        font-size: 12px;
        padding: 8px 15px;
    }
}

/* Light theme overrides */
.light-theme {
    --background-gradient: linear-gradient(135deg, #f5f7fb, #eef3fb);
    --primary-color: #0b2545;
    --secondary-color: #374a67;
    --accent-color: #ffb84d;
    --accent-2: #6b46ff;
    --text-color: #071126;
    --muted-text: rgba(7,17,38,0.6);
    --glass-bg: rgba(255,255,255,0.9);
    --glass-bg-2: rgba(255,255,255,0.95);
    --glass-border-strong: rgba(7,17,38,0.06);
    --glass-blur: 6px;
    background: var(--background-gradient);
}

/* Gentle transitions for theme-sensitive properties */
body, .top-bar, .admin-panel, .question-container, .prize-ladder, .option, .message-box, .prize-level {
    transition: background-color var(--theme-transition) ease, color var(--theme-transition) ease, box-shadow var(--theme-transition) ease, border-color var(--theme-transition) ease;
}