:root{--bg-main: #0c1527;--bg-card: #132238;--bg-card-hover: #1a2f4c;--bg-card-glass: rgba(19, 34, 56, .85);--bg-input: #091120;--bg-elevated: #1e3556;--primary: #3b82f6;--primary-light: #60a5fa;--primary-dark: #1d4ed8;--primary-glow: rgba(59, 130, 246, .25);--accent-rose: #f43f5e;--accent-rose-light: #fda4af;--accent-amber: #f59e0b;--accent-emerald: #10b981;--accent-purple: #8b5cf6;--color-turkce: #3b82f6;--color-matematik: #8b5cf6;--color-tarih: #f59e0b;--color-cografya: #10b981;--color-vatandaslik: #ec4899;--text-main: #f8fafc;--text-muted: #94a3b8;--text-sub: #64748b;--text-inverse: #0f172a;--border-light: rgba(255, 255, 255, .08);--border-active: rgba(59, 130, 246, .4);--border-focus: #3b82f6;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .2);--shadow-md: 0 4px 16px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .4);--shadow-glow: 0 0 24px rgba(59, 130, 246, .35);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 28px;--radius-full: 9999px;--font-heading: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-smooth: .35s cubic-bezier(.16, 1, .3, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{width:100%;min-height:100%;background-color:var(--bg-main);color:var(--text-main);font-family:var(--font-body);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;color:var(--text-main);line-height:1.25}a{color:inherit;text-decoration:none}button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none}button{cursor:pointer;-webkit-user-select:none;user-select:none}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#0000001a}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#ffffff40}.app-container{display:flex;min-height:100vh;background:radial-gradient(circle at 50% 0%,#152642,#0c1527 70%)}.main-content{flex:1;display:flex;flex-direction:column;min-height:100vh;min-width:0;padding-bottom:90px}@media (min-width: 1024px){.main-content{margin-left:260px;padding-bottom:40px}}.content-wrapper{max-width:1200px;width:100%;min-width:0;margin:0 auto;padding:16px 20px}.app-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:#0c1527d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-light)}.header-brand{display:flex;align-items:center;gap:12px}.brand-icon-box{width:40px;height:40px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px var(--primary-glow)}.header-title{font-size:1.1rem;font-weight:700;letter-spacing:-.02em}.header-subtitle{font-size:.75rem;color:var(--accent-rose-light);font-weight:500}.header-actions{display:flex;align-items:center;gap:10px}.streak-pill{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-full);background:#f59e0b26;border:1px solid rgba(245,158,11,.3);color:#fbbf24;font-weight:700;font-size:.85rem}.score-pill{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-full);background:#3b82f626;border:1px solid rgba(59,130,246,.3);color:#93c5fd;font-weight:700;font-size:.85rem}.desktop-sidebar{display:none;position:fixed;top:0;left:0;bottom:0;width:260px;background:#0f1c33;border-right:1px solid var(--border-light);z-index:50;padding:24px 16px;flex-direction:column}@media (min-width: 1024px){.desktop-sidebar{display:flex}}.sidebar-nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-md);color:var(--text-muted);font-weight:600;font-size:.95rem;transition:var(--transition-fast);margin-bottom:6px}.sidebar-nav-item:hover{background:#ffffff0d;color:var(--text-main)}.sidebar-nav-item.active{background:linear-gradient(90deg,#3b82f633,#3b82f60d);color:#60a5fa;border-left:3px solid var(--primary)}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:68px;background:#0f1c33f2;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-top:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-around;z-index:50;padding:0 8px}@media (min-width: 1024px){.bottom-nav{display:none}}.bottom-nav-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;flex:1;height:100%;color:var(--text-sub);font-size:.72rem;font-weight:600;transition:var(--transition-fast)}.bottom-nav-btn.active{color:#60a5fa}.bottom-nav-btn.active svg{transform:scale(1.15);color:#3b82f6;filter:drop-shadow(0 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var(--border-light)}.question-text{font-size:1.15rem;font-weight:600;line-height:1.6;color:var(--text-main);margin-bottom:24px}.options-grid{display:flex;flex-direction:column;gap:12px}.option-btn{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:var(--radius-md);background:#0d182b;border:1.5px solid var(--border-light);color:var(--text-main);font-size:1rem;font-weight:500;text-align:left;transition:var(--transition-fast)}.option-btn:hover:not(:disabled){background:#152642;border-color:#3b82f680;transform:translate(3px)}.option-btn .opt-badge{width:32px;height:32px;border-radius:var(--radius-sm);background:#ffffff14;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;flex-shrink:0}.option-btn.selected{background:#3b82f633;border-color:var(--primary)}.option-btn.selected .opt-badge{background:var(--primary);color:#fff}.option-btn.correct{background:#10b98133!important;border-color:#10b981!important}.option-btn.correct .opt-badge{background:#10b981!important;color:#fff}.option-btn.wrong{background:#f43f5e33!important;border-color:#f43f5e!important}.option-btn.wrong .opt-badge{background:#f43f5e!important;color:#fff}.flip-card-container{perspective:1000px;width:100%;height:320px;cursor:pointer}.flip-card-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.flip-card-inner.flipped{transform:rotateY(180deg)}.flip-card-front,.flip-card-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:var(--radius-xl);padding:28px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,#162844,#0e1b30);border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow-lg)}.flip-card-back{transform:rotateY(180deg);background:linear-gradient(145deg,#1a3254,#10213b);border-color:#3b82f64d}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#060b14cc;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;display:flex;align-items:center;justify-content:center;padding:16px;animation:fadeIn .2s ease}.modal-card{background:#112037;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-xl);max-width:600px;width:100%;padding:28px;box-shadow:0 20px 50px #0009;animation:slideUp .3s cubic-bezier(.16,1,.3,1);max-height:90vh;overflow-y:auto}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 15px #3b82f633}50%{box-shadow:0 0 25px #3b82f673}}.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}.responsive-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.responsive-grid-sm{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.stack-below-tablet{display:flex;gap:20px}@media (max-width: 768px){.stack-below-tablet{flex-direction:column}}.hide-below-tablet{display:none}@media (min-width: 769px){.hide-below-tablet{display:initial}}.hide-above-tablet{display:initial}@media (min-width: 769px){.hide-above-tablet{display:none!important}}@media (max-width: 768px){.content-wrapper{padding:12px 14px}.kpss-card{padding:16px}.app-header{padding:10px 14px}.header-title{font-size:1rem}.header-subtitle{font-size:.7rem}.question-box{padding:16px}.question-text{font-size:1.02rem}.option-btn{padding:12px 14px;font-size:.92rem}.modal-card{padding:18px;max-height:85vh;border-radius:var(--radius-lg)}.flip-card-container{height:260px}.flip-card-front,.flip-card-back{padding:18px}.countdown-banner{padding:16px}.btn-primary,.btn-secondary{padding:10px 16px;font-size:.88rem}}@media (max-width: 480px){.content-wrapper{padding:10px}.kpss-card{padding:12px}.header-title{font-size:.92rem}.question-text{font-size:.96rem}.flip-card-container{height:230px}}.bottom-nav{padding-bottom:env(safe-area-inset-bottom,0px);height:calc(68px + env(safe-area-inset-bottom,0px))}.main-content{padding-bottom:calc(90px + env(safe-area-inset-bottom,0px))}@media (min-width: 1024px){.main-content{padding-bottom:40px}}@media (max-width: 768px){table{display:block;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}}