@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-size-5xl: 3rem;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--letter-spacing-tight: -.025em;--letter-spacing-normal: 0;--letter-spacing-wide: .025em;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.25rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04)}:root[data-theme=light]{color-scheme:light;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border-color: #e2e8f0;--border-hover: #cbd5e1;--card-bg: #ffffff;--card-shadow: rgba(15, 23, 42, .08);--card-shadow-hover: rgba(15, 23, 42, .15);--primary-color: #3b82f6;--primary-hover: #2563eb;--primary-light: #dbeafe;--secondary-color: #64748b;--secondary-hover: #475569;--success-color: #10b981;--success-hover: #059669;--success-light: #d1fae5;--danger-color: #ef4444;--danger-hover: #dc2626;--danger-light: #fee2e2;--warning-color: #f59e0b;--warning-hover: #d97706;--warning-light: #fef3c7;--info-color: #06b6d4;--info-hover: #0891b2;--info-light: #cffafe}:root[data-theme=dark]{color-scheme:dark;--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border-color: #475569;--border-hover: #64748b;--card-bg: #1e293b;--card-shadow: rgba(0, 0, 0, .25);--card-shadow-hover: rgba(0, 0, 0, .4);--primary-color: #3b82f6;--primary-hover: #2563eb;--primary-light: #1e3a8a;--secondary-color: #64748b;--secondary-hover: #94a3b8;--success-color: #10b981;--success-hover: #059669;--success-light: #064e3b;--danger-color: #ef4444;--danger-hover: #dc2626;--danger-light: #7f1d1d;--warning-color: #f59e0b;--warning-hover: #d97706;--warning-light: #78350f;--info-color: #06b6d4;--info-hover: #0891b2;--info-light: 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var(--border-color)}.challenges-section{margin-top:var(--space-12)}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4);padding-bottom:var(--space-4);border-bottom:2px solid var(--border-color)}.section-header h2{margin:0;color:var(--text-primary);font-weight:700;font-size:var(--font-size-3xl);position:relative}.section-header h2:after{content:"";position:absolute;bottom:-8px;left:0;width:50px;height:3px;background:linear-gradient(90deg,var(--primary-color),var(--info-color));border-radius:var(--radius-sm)}.challenges-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(380px,1fr));gap:var(--space-8)}.challenge-card{transition:all .4s cubic-bezier(.4,0,.2,1);position:relative}.challenge-card:hover{transform:translateY(-8px) scale(1.02)}.challenge-card.completed{border-left:4px solid var(--success-color);position:relative}.challenge-card.completed:after{content:"✓";position:absolute;top:var(--space-4);right:var(--space-4);width:32px;height:32px;background:var(--success-color);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:var(--font-size-sm);box-shadow:var(--shadow-md)}.challenge-header{margin-bottom:var(--space-5)}.challenge-header h3{margin:0 0 var(--space-3) 0;color:var(--text-primary);font-weight:600;font-size:var(--font-size-xl);line-height:var(--line-height-tight)}.challenge-meta{display:flex;gap:var(--space-3);flex-wrap:wrap}.difficulty-badge,.points-badge{font-size:var(--font-size-xs);font-weight:600;padding:var(--space-2) var(--space-4);border-radius:var(--radius-2xl);background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color);text-transform:uppercase;letter-spacing:var(--letter-spacing-wide);transition:all .2s ease}.difficulty-badge.easy{background:linear-gradient(135deg,var(--success-color),var(--success-hover));color:#fff;border-color:var(--success-color);box-shadow:0 2px 8px #10b9814d}.difficulty-badge.medium{background:linear-gradient(135deg,var(--warning-color),var(--warning-hover));color:#fff;border-color:var(--warning-color);box-shadow:0 2px 8px #f59e0b4d}.difficulty-badge.hard{background:linear-gradient(135deg,var(--danger-color),var(--danger-hover));color:#fff;border-color:var(--danger-color);box-shadow:0 2px 8px #ef44444d}.points-badge{background:linear-gradient(135deg,var(--info-color),var(--info-hover));color:#fff;border-color:var(--info-color);box-shadow:0 2px 8px #06b6d44d}.challenge-description{color:var(--text-secondary);margin:var(--space-5) 0;line-height:var(--line-height-relaxed);font-size:var(--font-size-base)}.challenge-details{display:flex;justify-content:space-between;align-items:center;margin:var(--space-5) 0;font-size:var(--font-size-sm);color:var(--text-secondary);padding:var(--space-3);background:var(--bg-tertiary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.completed-badge{color:var(--success-color);font-weight:600;display:flex;align-items:center;gap:var(--space-2)}.completed-badge:before{content:"🏆";font-size:var(--font-size-base)}.challenge-button{width:100%;margin-top:var(--space-5)}.dashboard-header{position:relative}.theme-toggle-container{position:absolute;top:var(--space-4);right:0}@media (max-width: 768px){.dashboard{padding:var(--space-4)}.dashboard-header h1{font-size:var(--font-size-4xl)}.dashboard-header p{font-size:var(--font-size-lg)}.stats-grid,.challenges-grid{grid-template-columns:1fr;gap:var(--space-6)}.section-header{flex-direction:column;align-items:flex-start;gap:var(--space-3)}.challenge-meta{flex-direction:column;gap:var(--space-2)}.theme-toggle-container{position:static;text-align:center;margin-top:var(--space-4)}.challenge-card:hover{transform:translateY(-4px) scale(1.01)}}@media (max-width: 480px){.dashboard{padding:var(--space-3)}.dashboard-header h1{font-size:var(--font-size-3xl)}.challenges-grid{grid-template-columns:1fr}.challenge-card{min-width:unset}}.email-item{padding:var(--space-6);border-bottom:1px solid var(--border-color);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);background:var(--card-bg);position:relative;margin-bottom:1px;border-radius:var(--radius-lg);margin:var(--space-1);border:1px solid var(--border-color);overflow:hidden}.email-item:before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:linear-gradient(180deg,var(--primary-color),var(--info-color));transform:scaleY(0);transition:transform .3s ease}.email-item:hover{background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--card-bg) 100%);box-shadow:var(--shadow-md);transform:translate(var(--space-2))}.email-item:hover:before{transform:scaleY(1)}.email-item.selected{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);border-color:var(--primary-color);color:#fff;box-shadow:var(--shadow-lg);transform:translate(var(--space-3)) scale(1.02)}.email-item.selected:before{transform:scaleY(1);background:#ffffff4d;width:6px}.email-item.selected .email-sender,.email-item.selected .email-subject{color:#fff}.email-item.selected .email-time{color:#ffffffe6}.email-item.classified{opacity:.7;position:relative}.email-item.classified:after{content:"";position:absolute;top:var(--space-2);right:var(--space-2);width:20px;height:20px;background:var(--success-color);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xs);color:#fff;font-weight:700}.email-item.classified.correct:after{content:"✓";background:var(--success-color)}.email-item.classified.incorrect:after{content:"✗";background:var(--danger-color)}.email-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-3)}.email-sender{font-weight:600;color:var(--text-primary);font-size:var(--font-size-base);letter-spacing:var(--letter-spacing-normal)}.email-time{font-size:var(--font-size-sm);color:var(--text-secondary);font-weight:500;background:var(--bg-tertiary);padding:var(--space-1) var(--space-3);border-radius:var(--radius-2xl);border:1px solid var(--border-color)}.email-subject{font-size:var(--font-size-base);color:var(--text-primary);margin-bottom:var(--space-3);font-weight:500;line-height:var(--line-height-tight);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.email-preview{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:var(--line-height-normal);display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:var(--space-3)}.classification-status{font-size:var(--font-size-xs);font-weight:700;padding:var(--space-2) var(--space-4);border-radius:var(--radius-2xl);display:inline-flex;align-items:center;gap:var(--space-1);margin-top:var(--space-2);text-transform:uppercase;letter-spacing:var(--letter-spacing-wide);box-shadow:var(--shadow-sm)}.classification-status.correct{background:linear-gradient(135deg,var(--success-color),var(--success-hover));color:#fff}.classification-status.correct:before{content:"✓";font-weight:700}.classification-status.incorrect{background:linear-gradient(135deg,var(--danger-color),var(--danger-hover));color:#fff}.classification-status.incorrect:before{content:"✗";font-weight:700}.email-item.phishing-indicators{border-left:3px solid var(--warning-color)}.email-item.phishing-indicators:before{background:linear-gradient(180deg,var(--warning-color),var(--danger-color))}.email-item.unread .email-sender{font-weight:700}.email-item.unread .email-subject{font-weight:600}@media (max-width: 768px){.email-item{padding:var(--space-4);margin:var(--space-1) 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