@import "https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-main:#020617;--bg-card:#0f172aa6;--bg-sidebar:#0f172a;--pbi-yellow:#f2c811;--pbi-yellow-glow:#f2c81133;--pbi-yellow-dark:#d4af0d;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--border-color:#ffffff0f;--border-active:#f2c8114d;--success:#10b981;--success-glow:#10b98126;--error:#ef4444;--error-glow:#ef444426;--warning:#f59e0b;--warning-glow:#f59e0b26;--info:#3b82f6;--shadow-lg:0 10px 25px -5px #00000080, 0 8px 10px -6px #00000080;--shadow-glow:0 0 20px #f2c81126;--font-ar:"Cairo", sans-serif;--font-en:"Inter", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-main);color:var(--text-primary);font-family:var(--font-ar);-webkit-font-smoothing:antialiased;background-image:radial-gradient(at 0 0,#f2c8110d 0,#0000 50%),radial-gradient(at 100% 100%,#3b82f60d 0,#0000 50%);min-height:100vh;font-size:16px;line-height:1.6;overflow-x:hidden}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-main)}::-webkit-scrollbar-thumb{background:#1e293b;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#f2c8114d}#root{width:100%;min-height:100vh;display:flex}.app-container{width:100%;display:flex;position:relative}.main-content{flex-grow:1;min-height:100vh;margin-left:280px;padding:2.5rem;transition:all .3s cubic-bezier(.4,0,.2,1);overflow-y:auto}@media (width<=1024px){.main-content{margin-left:80px;padding:1.5rem}}h1,h2,h3,h4,h5,h6{color:var(--text-primary);letter-spacing:-.025em;font-weight:700}p{color:var(--text-secondary)}.glass-card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);border-radius:16px;padding:1.5rem;transition:transform .2s,border-color .2s,box-shadow .2s}.glass-card:hover{border-color:var(--border-active);box-shadow:var(--shadow-glow), var(--shadow-lg)}.glass-btn{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;font-family:var(--font-ar);background:#ffffff08;border-radius:8px;outline:none;align-items:center;gap:.5rem;padding:.6rem 1.2rem;font-weight:600;text-decoration:none;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex}.glass-btn:hover{border-color:var(--pbi-yellow);color:var(--pbi-yellow);background:#ffffff14;transform:translateY(-1px)}.glass-btn.active{background:var(--pbi-yellow);color:#000;border-color:var(--pbi-yellow)}.glass-btn.active:hover{background:var(--pbi-yellow-dark);color:#000}.lang-en{font-family:var(--font-en);text-align:left;direction:ltr}.lang-ar{font-family:var(--font-ar);text-align:right;direction:rtl}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:.4s cubic-bezier(.4,0,.2,1) forwards fadeIn}.flashcard-inner{transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1)}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden}.flashcard-back{transform:rotateY(180deg)}