:root {
    --bg-primary: #0b0f19;
    --bg-card: rgba(21, 30, 49, 0.75);
    --bg-card-hover: rgba(30, 43, 70, 0.85);
    --accent: #2563eb;
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --accent-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --accent-orange: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.12);
    --glass-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(37, 99, 235, 0.18) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(124, 58, 237, 0.18) 0%, transparent 45%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    padding: 0.8rem 1.6rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.4);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.6);
}

.btn-emerald {
    background: var(--accent-emerald);
    box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.4);
}

.btn-emerald:hover {
    box-shadow: 0 6px 20px 0 rgba(16, 185, 129, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    padding: 0.8rem 1.6rem;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 9999px;
    background: rgba(37, 99, 235, 0.15);
    border: 1px solid rgba(37, 99, 235, 0.35);
    color: #60a5fa;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 0.03em;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 750px;
    margin: 0 auto 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Grid */
.features {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 2.5rem;
    backdrop-filter: blur(12px);
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    background: var(--bg-card-hover);
    border-color: rgba(37, 99, 235, 0.45);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
}

/* Modal de Demonstração */
.modal-overlay {
    display: none !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: rgba(2, 6, 23, 0.85) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    z-index: 999999 !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 1rem !important;
}

.modal-overlay.active {
    display: flex !important;
}

.modal-card {
    background: #111827;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    width: 100%;
    max-width: 560px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.85);
    overflow: hidden;
    animation: modalSlide 0.3s ease-out;
}

@keyframes modalSlide {
    from { opacity: 0; transform: translateY(20px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 1.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(17, 24, 39, 0.6);
}

.modal-header h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: #fff;
}

.modal-close {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #94a3b8;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.modal-body {
    padding: 1.75rem;
}

/* Alerta de 24h na Demonstração */
.demo-alert-banner {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(217, 119, 6, 0.15) 100%);
    border: 1px solid rgba(245, 158, 11, 0.4);
    border-radius: 14px;
    padding: 1rem 1.2rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.demo-alert-banner .alert-icon {
    font-size: 1.6rem;
    line-height: 1;
}

.demo-alert-banner .alert-text strong {
    color: #fbbf24;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.25rem;
}

.demo-alert-banner .alert-text p {
    color: #e2e8f0;
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.4;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    color: #fff;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .form-group {
    flex: 1;
}

.btn-block {
    width: 100%;
    justify-content: center;
    padding: 0.9rem 1.5rem;
    font-size: 1.05rem;
    margin-top: 0.5rem;
}

/* Footer */
footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2.4rem; }
    .form-row { flex-direction: column; gap: 0; }
}