/* Base styles */
:root {
    --primary: #e40000;
    --primary-hover: #a50000;
    --bg-dark: #111827;
    --bg-darker: #0f172a;
    --text-light: #f3f4f6;
    --text-muted: #9ca3af;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Inter, system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.5;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-darker);
    padding: 2rem;
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    position: relative;
    transform: scale(0.7);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.modal.active {
    transform: scale(1);
    opacity: 1;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    transform: rotate(90deg);
}

.modal-content {
    margin-top: 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(8px);
    z-index: 50;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(to right, var(--primary), var(--primary-hover));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.download-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 120%;
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transform: skewX(25deg);
    transition: left 0.75s ease;
}

.download-btn:hover::before {
    left: 100%;
}

.download-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(241, 99, 99, 0.7);
}

/* Hero section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to bottom right, var(--bg-dark), var(--bg-darker));
    padding: 2rem 1rem;
}

.hero-content {
    max-width: 64rem;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
}

.highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 36rem;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.primary-btn, .secondary-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.primary-btn {
    background: linear-gradient(to right, var(--primary), var(--primary-hover));
    color: white;
    border: none;
    position: relative;
    overflow: hidden;
}

.primary-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 120%;
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transform: skewX(25deg);
    transition: left 0.75s ease;
}

.primary-btn:hover::before {
    left: 100%;
}

.primary-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(241, 99, 99, 0.7);
}

.secondary-btn {
    background: rgba(17, 24, 39, 0.8);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.secondary-btn:hover {
    background: rgba(17, 24, 39, 0.6);
    transform: scale(1.05);
}

/* Features section */
.features {
    padding: 6rem 1rem;
    background: var(--bg-dark);
}

.features-grid {
    max-width: 80rem;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.feature-card {
    background: #1f2937;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 9999px;
    color: var(--primary);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

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

/* Animations */
@keyframes shine {
    to {
        left: 100%;
    }
}