* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: #0A0F1E; color: #E2E8F0; line-height: 1.5; }
.bg-grid { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-image: linear-gradient(#1E2A5E 1px, transparent 1px), linear-gradient(90deg, #1E2A5E 1px, transparent 1px); background-size: 60px 60px; opacity: 0.1; pointer-events: none; z-index: 0; }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 5%; background: rgba(10, 15, 30, 0.8); backdrop-filter: blur(12px); position: relative; z-index: 10; border-bottom: 1px solid #2D3A6E; }
.logo { font-size: 1.6rem; font-weight: 700; }
.logo span { color: #3B82F6; }
.logo i { color: #F97316; margin-right: 8px; }
.nav-links a { color: #CBD5E1; text-decoration: none; margin-left: 2rem; transition: 0.3s; font-weight: 500; }
.nav-links a:hover, .active { color: #F97316; }
.hero { min-height: 80vh; display: flex; align-items: center; justify-content: center; text-align: center; position: relative; z-index: 2; }
.hero-content h1 { font-size: 3.2rem; margin-bottom: 1rem; }
.gradient-text { background: linear-gradient(135deg, #F97316, #3B82F6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.btn-primary, .btn-secondary { display: inline-block; padding: 12px 28px; border-radius: 40px; text-decoration: none; font-weight: 600; margin: 0.5rem; transition: 0.3s; }
.btn-primary { background: #F97316; color: #0A0F1E; box-shadow: 0 8px 20px rgba(249,115,22,0.3); }
.btn-primary:hover { background: #ea580c; transform: translateY(-3px); }
.btn-secondary { background: rgba(59,130,246,0.2); border: 1px solid #3B82F6; color: #94A3B8; }
.features { padding: 5rem 5%; text-align: center; }
.features-grid { display: flex; gap: 2rem; justify-content: center; flex-wrap: wrap; margin-top: 3rem; }
.feature-card { background: rgba(20, 28, 50, 0.6); backdrop-filter: blur(8px); padding: 2rem; border-radius: 32px; width: 250px; border: 1px solid #2D3A6E; transition: 0.3s; }
.feature-card i { font-size: 2.5rem; color: #F97316; margin-bottom: 1rem; }
.login-container { display: flex; justify-content: center; align-items: center; min-height: 80vh; }
.login-card { background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(16px); padding: 2.5rem; border-radius: 48px; width: 380px; border: 1px solid #334155; text-align: center; }
.input-group { display: flex; align-items: center; background: #1E293B; border-radius: 60px; margin: 1rem 0; padding: 0.2rem 1rem; border: 1px solid #334155; }
.input-group i { margin-right: 12px; color: #94A3B8; }
.input-group input { background: none; border: none; padding: 14px 0; width: 100%; color: white; outline: none; font-size: 1rem; }
.full-width { width: 100%; }
.demo-hint { margin-top: 1.5rem; font-size: 0.8rem; background: #1E293B; padding: 8px; border-radius: 40px; }
.dashboard { padding: 2rem 5%; }
.files-grid { display: flex; flex-wrap: wrap; gap: 1.5rem; margin: 2rem 0; }
.file-card { background: #111827; border-radius: 28px; padding: 1.5rem; width: 260px; border: 1px solid #2D3A6E; transition: 0.2s; }
.file-card i { font-size: 2rem; color: #F97316; }
.file-link { color: #3B82F6; text-decoration: none; font-weight: 600; display: inline-block; margin-top: 10px; }
.info-banner { background: #1E293B; border-radius: 40px; padding: 1rem; text-align: center; margin-top: 2rem; }
footer { text-align: center; padding: 2rem; color: #5B6B8C; border-top: 1px solid #1E2A5E; margin-top: 3rem; }