@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@600;700;800&display=swap";:root{--bg-dark: hsl(230, 25%, 7%);--bg-card: hsl(230, 22%, 12%);--bg-input: hsl(230, 18%, 18%);--border-dim: hsla(230, 20%, 30%, .4);--border-light: hsla(255, 255, 255, .08);--text-main: hsl(230, 30%, 90%);--text-muted: hsl(230, 15%, 65%);--text-dark: hsl(230, 12%, 10%);--neon-cyan: hsl(180, 100%, 50%);--neon-cyan-glow: hsla(180, 100%, 50%, .4);--neon-pink: hsl(330, 100%, 55%);--neon-pink-glow: hsla(330, 100%, 55%, .4);--neon-green: hsl(120, 100%, 50%);--neon-green-glow: hsla(120, 100%, 50%, .4);--neon-orange: hsl(25, 100%, 50%);--neon-orange-glow: hsla(25, 100%, 50%, .4);--neon-yellow: hsl(55, 100%, 50%);--transition-smooth: all .3s cubic-bezier(.25, .8, .25, 1);--glass-bg: rgba(30, 34, 48, .6);--glass-blur: blur(16px)}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,sans-serif;-webkit-tap-highlight-color:transparent}body{background-color:var(--bg-dark);color:var(--text-main);min-height:100vh;display:flex;justify-content:center;align-items:center;overflow-x:hidden;position:relative}body:before,body:after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;z-index:-1;filter:blur(120px);opacity:.25;pointer-events:none}body:before{top:10%;left:10%;background:var(--neon-cyan)}body:after{bottom:10%;right:10%;background:var(--neon-pink)}.app-container{width:100%;max-width:460px;height:100vh;max-height:850px;background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border:1px solid var(--border-light);border-radius:28px;box-shadow:0 24px 60px #00000080;display:flex;flex-direction:column;overflow:hidden;position:relative}@media (max-width: 480px){.app-container{border-radius:0;max-height:100vh;border:none}}header{padding:20px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-light)}.brand{font-family:Outfit,sans-serif;font-size:22px;font-weight:800;background:linear-gradient(135deg,var(--neon-cyan),var(--neon-pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.header-controls{display:flex;gap:10px;align-items:center}.icon-btn{background:var(--bg-card);border:1px solid var(--border-dim);color:var(--text-main);padding:8px 12px;border-radius:12px;cursor:pointer;font-size:13px;font-weight:600;transition:var(--transition-smooth)}.icon-btn:hover{border-color:var(--neon-cyan);box-shadow:0 0 10px var(--neon-cyan-glow)}.screen{flex:1;display:none;flex-direction:column;padding:20px 24px;overflow-y:auto}.screen.active{display:flex;animation:fadeIn .4s ease-out forwards}@keyframes 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var(--neon-cyan)}.card-stack{perspective:1000px;flex:1;display:flex;justify-content:center;align-items:center;margin-bottom:20px}.flashcard{width:100%;max-width:340px;height:380px;position:relative;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1);cursor:pointer}.flashcard.flipped{transform:rotateY(180deg)}.card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:24px;padding:30px 24px;display:flex;flex-direction:column;justify-content:space-between;background:var(--bg-card);border:2px solid var(--border-dim);box-shadow:0 15px 35px #0000004d}.card-front{z-index:2;transform:rotateY(0)}.card-back{transform:rotateY(180deg);background:radial-gradient(circle at top right,hsl(230,22%,18%),var(--bg-card));border-color:var(--neon-cyan)}.card-subject-tag{background:#00f0ff1a;border:1px solid var(--neon-cyan);color:var(--neon-cyan);padding:6px 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var(--neon-pink-glow);text-decoration:underline}.lock-screen-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0a0b10d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:2000;display:none;align-items:center;justify-content:center;padding:24px}.lock-screen-overlay.active{display:flex;animation:fadeIn .3s ease-out forwards}.lock-card{background:var(--bg-card);border:2px solid var(--neon-pink);box-shadow:0 0 30px var(--neon-pink-glow);border-radius:24px;padding:30px 24px;text-align:center;max-width:360px;width:100%}.lock-icon{font-size:48px;margin-bottom:15px;animation:float 2s ease-in-out infinite}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-8px)}to{transform:translateY(0)}}.admin-users-list{display:flex;flex-direction:column;gap:10px;overflow-y:auto;flex:1}.admin-user-row{background:var(--bg-input);border:1px solid var(--border-light);border-radius:12px;padding:12px 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#f0f2f5;--bg-card: #ffffff;--bg-input: #f7f9fa;--border-dim: #e5e5e5;--border-light: #eceff1;--text-main: #3c3c3c;--text-muted: #777777;--text-dark: #2c2c2c;--glass-bg: rgba(255, 255, 255, .9);--glass-blur: blur(12px);--neon-cyan: #0088cc;--neon-cyan-glow: rgba(0, 136, 204, .15);--neon-pink: #d92662;--neon-pink-glow: rgba(217, 38, 98, .15);--neon-green: #58cc02;--neon-green-glow: rgba(88, 204, 2, .15);--neon-orange: #ff9600;--neon-orange-glow: rgba(255, 150, 0, .15);--neon-yellow: #ffc800}body.light-mode:before,body.light-mode:after{opacity:.15}body.light-mode .icon-btn{border:2px solid var(--border-dim);border-bottom:4px solid var(--border-dim);background:var(--bg-card);color:var(--text-main);border-radius:12px;transform:translateY(0);transition:transform .1s ease,border-bottom-width .1s ease}body.light-mode .icon-btn:hover{border-color:var(--neon-cyan);box-shadow:0 4px 12px var(--neon-cyan-glow)}body.light-mode 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.subject-btn.active{border-color:var(--neon-cyan);border-bottom-color:#006da3}body.light-mode .mode-tab-btn.active{background:var(--bg-input);color:var(--neon-cyan);border:2px solid var(--neon-cyan)}body.light-mode .card-question-text,body.light-mode .review-item-q,body.light-mode .student-email-row,body.light-mode .paper-title,body.light-mode .mock-question-body{color:var(--text-main)}body.light-mode .ai-trigger-banner-btn{color:var(--text-main);text-shadow:none}body.light-mode input,body.light-mode select,body.light-mode textarea{color:var(--text-main)!important;background:var(--bg-input)!important;border:2px solid var(--border-dim)!important}body.light-mode input:focus,body.light-mode select:focus,body.light-mode textarea:focus{border-color:var(--neon-cyan)!important;box-shadow:0 0 6px var(--neon-cyan-glow)!important}body.light-mode .card-back{background:#fff;border-color:var(--neon-cyan)}body.light-mode .card-hint-text{background:var(--bg-dark);color:var(--text-muted)}body.light-mode .visual-viewport svg{background:var(--bg-card)!important}body.light-mode .visual-viewport svg text{fill:var(--text-main)!important}body.light-mode .visual-viewport svg text[fill="#00f0ff"]{fill:var(--neon-cyan)!important}body.light-mode .visual-viewport svg text[fill="#39ff14"]{fill:var(--neon-green)!important}body.light-mode .visual-viewport svg text[fill="#ff007f"]{fill:var(--neon-pink)!important}body.light-mode .visual-viewport svg text[fill="#ff3131"]{fill:var(--neon-pink)!important}body.light-mode .visual-viewport svg text[fill="#ff5e00"]{fill:var(--neon-orange)!important}body.light-mode .visual-viewport svg rect[fill="#1e2230"],body.light-mode .visual-viewport svg path[fill="#1e2230"],body.light-mode .visual-viewport svg circle[fill="#1e2230"]{fill:var(--bg-dark)!important}body.light-mode .visual-viewport svg rect[fill="#242838"],body.light-mode .visual-viewport svg path[fill="#242838"],body.light-mode .visual-viewport svg circle[fill="#242838"]{fill:var(--bg-dark)!important}body.light-mode .visual-viewport svg rect[fill="#1a1c24"],body.light-mode .visual-viewport svg path[fill="#1a1c24"]{fill:var(--bg-dark)!important}body.light-mode .visual-viewport svg rect[fill="#39ff14"]{fill:var(--neon-green)!important}body.light-mode .visual-viewport svg circle[fill="#39ff14"]{fill:var(--neon-green)!important}body.light-mode .visual-viewport svg rect[fill="#ff007f"]{fill:var(--neon-pink)!important}body.light-mode .visual-viewport svg circle[fill="#ff007f"]{fill:var(--neon-pink)!important}body.light-mode .visual-viewport svg line[stroke="#495070"],body.light-mode .visual-viewport svg path[stroke="#495070"],body.light-mode .visual-viewport svg rect[stroke="#495070"],body.light-mode .visual-viewport svg circle[stroke="#495070"]{stroke:var(--border-dim)!important}body.light-mode .visual-viewport svg line[stroke="#fff"],body.light-mode .visual-viewport svg path[stroke="#fff"],body.light-mode .visual-viewport svg rect[stroke="#fff"],body.light-mode .visual-viewport svg circle[stroke="#fff"]{stroke:var(--text-main)!important}body.light-mode .visual-viewport svg line[stroke="#00f0ff"],body.light-mode .visual-viewport svg path[stroke="#00f0ff"],body.light-mode .visual-viewport svg rect[stroke="#00f0ff"],body.light-mode .visual-viewport svg circle[stroke="#00f0ff"]{stroke:var(--neon-cyan)!important}body.light-mode .visual-viewport svg line[stroke="#ff007f"],body.light-mode .visual-viewport svg path[stroke="#ff007f"],body.light-mode .visual-viewport svg rect[stroke="#ff007f"],body.light-mode .visual-viewport svg circle[stroke="#ff007f"]{stroke:var(--neon-pink)!important}body.light-mode .visual-viewport svg line[stroke="#39ff14"],body.light-mode .visual-viewport svg path[stroke="#39ff14"],body.light-mode .visual-viewport svg rect[stroke="#39ff14"],body.light-mode .visual-viewport svg circle[stroke="#39ff14"]{stroke:var(--neon-green)!important}.social-btn{border-radius:12px;padding:12px;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:var(--transition-smooth)}.social-btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px #0003}.social-btn:active{transform:translateY(1px)}body.light-mode .social-btn{border:2px solid var(--border-dim)!important;border-bottom:4px solid var(--border-dim)!important;transform:translateY(0);transition:transform .1s ease,border-bottom-width .1s ease}body.light-mode .social-btn:active{transform:translateY(2px);border-bottom-width:2px!important}body.light-mode #auth-facebook-btn{border-color:#1462c7!important;border-bottom-color:#0d468f!important}