.hero-section { text-align: center; margin-bottom: 4rem; }
.hero-section h1 { font-size: 3.5rem; font-weight: 800; tracking: -0.04em; margin-bottom: 1rem; line-height: 1.1; }
.gradient-text { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.subtitle { color: var(--text-secondary); font-size: 1.25rem; max-width: 650px; margin: 0 auto; }
.hub-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; margin-top: 2rem; }
.hub-card { background: var(--bg-surface); backdrop-filter: var(--blur-glass); border: 1px solid var(--bg-surface-border); border-radius: 16px; padding: 2rem; text-decoration: none; color: inherit; transition: var(--transition-smooth); }
.hub-card:hover { transform: translateY(-4px); border-color: var(--accent-glow); box-shadow: 0 12px 40px rgba(5b, 130, 246, 0.15); }
.hub-card h2 { font-size: 1.5rem; margin-bottom: 0.75rem; display: flex; align-items: center; justify-content: space-between; }
.hub-card p { color: var(--text-secondary); font-size: 0.95rem; }
.tools-list-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.tool-item-card { background: var(--bg-surface); border: 1px solid var(--bg-surface-border); border-radius: 12px; padding: 1.5rem; text-decoration: none; color: inherit; transition: var(--transition-smooth); }
.tool-item-card:hover { transform: translateY(-2px); border-color: rgba(255,255,255,0.15); background: rgba(255,255,255,0.02); }
.tool-item-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--text-primary); }
.tool-item-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.4; }
.drop-zone { background: var(--bg-surface); border: 2px dashed var(--bg-surface-border); border-radius: 20px; padding: 5rem 2rem; text-align: center; cursor: pointer; transition: var(--transition-smooth); max-width: 800px; margin: 0 auto 3rem auto; }
.drop-zone:hover { border-color: var(--accent-glow); background: rgba(59, 130, 246, 0.02); }
.security-badge { display: inline-block; margin-top: 1.5rem; font-size: 0.75rem; padding: 0.35rem 1rem; background: rgba(16, 185, 129, 0.1); color: #10b981; border-radius: 30px; font-weight: 600; }
.control-panel { max-width: 600px; margin: 2rem auto; background: var(--bg-surface); padding: 2rem; border-radius: 16px; border: 1px solid var(--bg-surface-border); }
.control-group { margin-bottom: 1.5rem; }
.control-group label { display: block; margin-bottom: 0.5rem; font-size: 0.9rem; color: var(--text-secondary); }
.control-group input[type="range"] { width: 100%; accent-color: var(--accent-glow); }
.btn-primary { background: var(--accent-gradient); border: none; color: white; padding: 0.75rem 2rem; border-radius: 10px; font-weight: 600; cursor: pointer; width: 100%; font-size: 1rem; transition: var(--transition-smooth); }
.btn-primary:hover { opacity: 0.9; transform: scale(0.99); }