/* --- General Setup & Variables --- */
:root {
    --bg-dark: #020617;
    --bg-medium: #0f172a;
    --bg-light: #1e293b;
    --primary-blue: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.5);
    --text-light: #e2e8f0;
    --text-medium: #94a3b8;
    --text-dark: #64748b;
    --border-color: #334155;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    overflow-x: hidden;
}

/* --- Header --- */
header {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 1rem 2rem;
    background-color: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

header.scrolled {
    border-bottom-color: var(--border-color);
}

.logo a {
    font-weight: 800;
    font-size: 1.5rem;
    color: white;
}

/* --- Hero Section --- */
.hero-section {
    position: relative;
    padding: 6rem 1rem;
    text-align: center;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--primary-glow), rgba(2, 6, 23, 0));
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    background: linear-gradient(180deg, white, var(--text-medium));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-button {
    background: var(--primary-blue);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px var(--primary-glow);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--primary-glow);
}

/* --- Features Section --- */
.features-section {
    padding: 6rem 0;
}

.feature-row {
    transition: transform 0.4s ease;
}

.feature-row:hover {
    transform: scale(1.02);
}

.feature-image {
    border-radius: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    width: 100%;
    height: 480px;
    object-fit: cover;
    background-color: var(--bg-light);
}

.feature-row:hover .feature-image {
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.45);
}

.feature-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.feature-text h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.feature-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-medium);
    max-width: 500px;
}

/* --- How It Works / Trust Cards --- */
.step-card, .trust-card {
    transition: all 0.3s ease;
}

.step-card:hover, .trust-card:hover {
    transform: scale(1.05);
}

/* --- Benefits Section --- */
.benefit-card {
    background: var(--bg-medium);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}
.benefit-card:hover {
    transform: translateY(-5px);
    background: var(--bg-light);
}

/* --- Contact Section --- */
.contact-button {
    border: 1px solid var(--border-color);
}

/* --- Animations --- */
.animated-section {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animated-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Modals --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.modal-panel {
    background: var(--bg-medium);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    position: relative;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .modal-panel {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: var(--text-dark);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close-btn:hover {
    color: var(--text-light);
}

.modal-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.modal-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    color: #f87171; /* red-400 */
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    text-align: center;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.hidden {
    display: none;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }
    header {
        padding: 1rem;
    }
    .grid {
        grid-template-columns: 1fr;
    }
    .feature-card, .benefit-card {
        margin-bottom: 2rem;
    }
}