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rgba(255,255,255,.05)}.metric{display:flex;flex-direction:column;gap:.25rem}.metric-label{font-size:.7rem;color:var(--text-muted);text-transform:uppercase}.metric-value{font-weight:700;font-size:.9rem}.curve-low{color:var(--success)}.curve-moderate{color:var(--warning)}.curve-steep{color:var(--danger)}.text-accent{color:var(--accent-primary)}.fade-in-up{animation:fadeInUp .5s ease forwards;opacity:0;transform:translateY(20px)}@keyframes 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ease}.close-btn:hover{color:#fff}.aligner-content{display:flex;flex-direction:column;gap:2rem}.progress-bar{width:100%;height:4px;background:#ffffff1a;border-radius:2px;overflow:hidden;margin-bottom:1rem}.progress-fill{height:100%;background:var(--accent-primary);transition:width .3s ease}.aligner-question{font-size:1.75rem;font-weight:700;color:#fff;line-height:1.3;text-align:center;margin-bottom:1rem}.options-grid{display:flex;flex-direction:column;gap:1rem}.option-btn{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);color:#e2e8f0;padding:1.25rem;border-radius:12px;font-size:1.1rem;text-align:left;cursor:pointer;transition:all .2s ease;animation:fadeInUp .4s ease backwards}.option-btn:hover{background:#8a2be226;border-color:var(--accent-primary);transform:translate(5px);box-shadow:0 4px 15px #8a2be233}.aligner-calculating{text-align:center;padding:3rem 0;display:flex;flex-direction:column;align-items:center;gap:1.5rem}.aligner-calculating .empty-icon{font-size:4rem}.aligner-title{font-size:1.5rem;color:#fff}.aligner-subtitle{color:var(--text-muted)}.aligner-btn{border-color:#8a2be280;background:#8a2be21a}.aligner-btn .btn-glow{background:radial-gradient(circle,rgba(138,43,226,.5) 0%,transparent 60%)}.fade-in{animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.slide-in-right{animation:slideInRight .4s cubic-bezier(.175,.885,.32,1.275)}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}:root{--bg-dark: #0f111a;--bg-card: rgba(255, 255, 255, .03);--border-glow: rgba(138, 43, 226, .5);--text-main: #e2e8f0;--text-muted: #94a3b8;--accent-primary: #8a2be2;--accent-secondary: #00ffcc;--danger: #ff4757;--warning: #ffa502;--success: #2ed573}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-dark);color:var(--text-main);min-height:100vh;background-image:radial-gradient(circle at 15% 50%,rgba(138,43,226,.08) 0%,transparent 50%),radial-gradient(circle at 85% 30%,rgba(0,255,204,.05) 0%,transparent 50%);background-attachment:fixed}.glass-panel{background:var(--bg-card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.08);border-radius:16px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}.glass-panel:hover{transform:translateY(-4px);box-shadow:0 10px 30px -10px #00000080;border-color:#ffffff26}.glass-pane.highlighted{border-color:var(--accent-primary)!important;box-shadow:0 0 50px #00ffcc4d!important;transform:scale(1.02);z-index:10}.corner-difficulty-badge{padding:6px 14px;border-radius:20px;font-size:.75rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;box-shadow:0 4px 15px #0000004d;animation:slowPulse 3s infinite alternate;z-index:10;color:#fff}.corner-difficulty-badge.curve-easy{background:#10b9814d;border:1px solid rgba(16,185,129,.6)}.corner-difficulty-badge.curve-medium{background:#f59e0b4d;border:1px solid rgba(245,158,11,.6)}.corner-difficulty-badge.curve-hard{background:#ef44444d;border:1px solid rgba(239,68,68,.6)}@keyframes slowPulse{0%{transform:scale(1);opacity:.9}to{transform:scale(1.05);opacity:1;box-shadow:0 0 15px #fff3}}h1,h2,h3,h4,h5,h6{font-weight:700;letter-spacing:-.025em;margin-bottom:.5rem}p{line-height:1.6}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-dark)}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#fff3}