:root {
    --primary-dark: #020617; /* Slate 950 */
    --primary-light: #f8fafc;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%); /* Blue to Purple */
    --accent-color: #3b82f6;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: 1px solid rgba(255, 255, 255, 0.6);
    --shadow-soft: 0 10px 40px -10px rgba(0,0,0,0.08);
    --shadow-hover: 0 20px 50px -10px rgba(59, 130, 246, 0.15);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: #334155;
    background-color: #f1f5f9;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main { flex: 1; }

/* --- Typography & Utilities --- */
h1, h2, h3, h4, h5 { font-weight: 800; letter-spacing: -0.03em; color: var(--primary-dark); }
.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.fw-black { font-weight: 900; }

/* --- Navbar (Glass) --- */
.navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.3);
    padding: 1rem 0;
    transition: all 0.3s ease;
}
.navbar-brand { font-weight: 900; font-size: 1.5rem; color: var(--primary-dark); }
.nav-link { font-weight: 600; color: #64748b; margin-left: 1.5rem; transition: 0.2s; }
.nav-link:hover, .nav-link.active { color: var(--accent-color); }

/* --- Buttons --- */
.btn-primary-custom {
    background: var(--accent-gradient);
    border: none;
    color: white;
    padding: 0.8rem 2.5rem;
    font-weight: 700;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}
.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
    color: white;
}

/* --- Hero Section --- */
.hero-section {
    background: var(--primary-dark);
    padding: 10rem 0 6rem;
    position: relative;
    overflow: hidden;
    color: white;
}
.hero-bg-glow {
    position: absolute;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(0,0,0,0) 70%);
    top: -100px; right: -100px;
    border-radius: 50%;
    z-index: 0;
}
.hero-content { position: relative; z-index: 1; }
.hero-title { font-size: 4rem; line-height: 1.1; margin-bottom: 1.5rem; color: white; }

/* --- Cards (Glassmorphism) --- */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: var(--glass-border);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    height: 100%;
    position: relative;
    overflow: hidden;
}
.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
    background: white;
}

/* --- Product Specifics --- */
.badge-best-seller {
    position: absolute;
    top: 15px; right: 15px;
    background: #f59e0b;
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    box-shadow: 0 2px 10px rgba(245, 158, 11, 0.3);
}
.price-tag { font-size: 2.5rem; font-weight: 800; color: var(--primary-dark); letter-spacing: -1px; }
.price-sub { font-size: 0.9rem; color: #94a3b8; font-weight: 500; }

/* --- Modals --- */
.modal-content {
    border-radius: 1.5rem;
    border: none;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}
.modal-header { background: #f8fafc; border-bottom: 1px solid #e2e8f0; padding: 1.5rem; }
.modal-body { padding: 2.5rem; }

/* --- Footer --- */
footer { background: var(--primary-dark); color: #94a3b8; padding: 5rem 0 2rem; }
footer h5 { color: white; margin-bottom: 1.5rem; }
footer a { color: #94a3b8; text-decoration: none; transition: 0.2s; }
footer a:hover { color: white; text-decoration: underline; }

/* --- Utilities --- */
.section-padding { padding: 6rem 0; }
.icon-box-lg {
    width: 80px; height: 80px;
    background: #eff6ff; color: var(--accent-color);
    border-radius: 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; margin-bottom: 1.5rem;
}

/* --- Onboarding Wizard --- */
.wizard-container { max-width: 800px; margin: -5rem auto 0; position: relative; z-index: 10; }
.wizard-card { background: white; border-radius: 1.5rem; box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); overflow: hidden; }
.wizard-progress { height: 6px; background-color: #e2e8f0; width: 100%; }
.wizard-progress-bar { height: 100%; background-color: var(--accent-color); width: 0%; transition: width 0.4s ease; }
.step-content { display: none; animation: fadeIn 0.5s; }
.step-content.active { display: block; }
.option-card { border: 2px solid #e2e8f0; border-radius: 1rem; padding: 1.5rem; cursor: pointer; transition: all 0.2s; text-align: center; height: 100%; }
.option-card:hover { border-color: var(--accent-color); background-color: #eff6ff; }
.option-card.selected { border-color: var(--accent-color); background-color: #eff6ff; box-shadow: 0 0 0 2px var(--accent-color); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }