:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --secondary: #a855f7;
    --bg-light: #F8FAFC;
    --bg-white: #ffffff;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --shadow-soft: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 40px -10px rgba(99, 102, 241, 0.2);
    --border-radius: 16px;
    --container-width: 1200px;
    --success: #10B981;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* --- Utilities --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.6rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background-color: var(--success);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

/* --- Header --- */
header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

/* --- Hero Section --- */
.hero {
    min-height: calc(100vh - 80px);
    /* Full height minus header */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
    /* Add some small padding for mobile safety */
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(rgba(15, 23, 42, 0.6), rgba(15, 23, 42, 0.6)), url('img/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
}

.hero::before {
    display: none;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
    background: none;
    -webkit-text-fill-color: initial;
    color: #818cf8;
    /* Light Indigo */
}

.hero p {
    font-size: 1.35rem;
    color: #e2e8f0;
    max-width: 700px;
    margin: 0 auto 3rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Hero Visual removed to be background */
.hero-visual {
    display: none;
}

/* --- Features --- */
.features {
    padding: 6rem 0;
    background: white;
}

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

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid transparent;
}

.card:hover {
    background: white;
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(99, 102, 241, 0.1);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    color: var(--text-muted);
}

/* --- Pricing --- */
.pricing {
    padding: 6rem 0;
    text-align: center;
}

.pricing-card {
    background: white;
    border-radius: 24px;
    padding: 4rem;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    background-image: linear-gradient(white, white), linear-gradient(135deg, var(--primary), var(--secondary));
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.pricing-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}

.price {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin: 1.5rem 0;
}

.price span {
    font-size: 1.2rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* --- Login Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.login-box {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .login-box {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid #E2E8F0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s;
    background: var(--bg-light);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
}

/* --- Animations --- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* --- Auth & Actions --- */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.desktop-only {
    display: inline;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
}

/* --- Mobile Menu Overlay --- */
.mobile-menu {
    position: fixed;
    top: 80px; /* Header Height */
    left: 0;
    width: 100%;
    height: calc(100vh - 80px);
    background: white;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu a {
    font-size: 1.5rem;
    color: var(--text-main);
    text-decoration: none;
    margin-bottom: 2rem;
    font-weight: 600;
}

/* --- Media Queries --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none; /* Hide Desktop Links */
    }

    .menu-toggle {
        display: block; /* Show Sandwich */
    }

    .desktop-only {
        display: none; /* Hide text in buttons to save space */
    }

    .nav-actions .btn {
        padding: 0.5rem;
        border-radius: 8px; /* Square-ish buttons on mobile */
    }
}