/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    /* Primary Colors */
    --primary-dark: #111827;
    --white: #FFFFFF;
    
    /* Secondary Colors */
    --light-gray: #F9FAFB;
    --medium-gray: #F3F4F6;
    --border-gray: #E5E7EB;
    --text-gray: #6B7280;
    --light-text-gray: #9CA3AF;
    --dark-text: #374151;
    
    /* Status Colors */
    --success-green: #10B981;
    --warning-orange: #F59E0B;
    --error-red: #EF4444;
    --success-dark-green: #059669;
    
    /* Special Colors */
    --time-highlight: #D97706;
    --time-background: #FEF3C7;
    --ingredients-background: #F8FDF8;
    --instructions-background: #FDF8F0;
    
    /* Typography */
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Font Sizes */
    --large-title: 28px;
    --title: 24px;
    --section-title: 20px;
    --subtitle: 18px;
    --body: 16px;
    --small: 14px;
    --extra-small: 12px;
    --tiny: 13px;
    
    /* Border Radius */
    --radius-small: 8px;
    --radius-medium: 12px;
    --radius-large: 16px;
    --radius-extra-large: 20px;
    --radius-pill: 24px;
    
    /* Spacing */
    --spacing-small: 8px;
    --spacing-medium: 12px;
    --spacing-large: 16px;
    --spacing-extra-large: 20px;
    --spacing-huge: 24px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--body);
    font-weight: var(--font-regular);
    line-height: 26px;
    color: var(--dark-text);
    background-color: var(--white);
}

/* Typography */
h1 {
    font-size: var(--large-title);
    font-weight: var(--font-bold);
    line-height: 32px;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-extra-large);
}

h2 {
    font-size: var(--title);
    font-weight: var(--font-bold);
    line-height: 24px;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-large);
}

h3 {
    font-size: var(--section-title);
    font-weight: var(--font-semibold);
    line-height: 24px;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-medium);
}

p {
    margin-bottom: var(--spacing-large);
    color: var(--dark-text);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-huge);
}

.section {
    padding: 60px 0;
}

/* Header */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-large) var(--spacing-huge);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-medium);
    text-decoration: none;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-small);
}

.logo-text {
    font-size: var(--subtitle);
    font-weight: var(--font-bold);
    color: var(--primary-dark);
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-extra-large);
}

nav a {
    text-decoration: none;
    color: var(--text-gray);
    font-weight: var(--font-medium);
    transition: color 0.3s ease;
}

nav a:hover,
nav a.active {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-medium) var(--spacing-extra-large);
    border: none;
    border-radius: var(--radius-pill);
    font-size: var(--body);
    font-weight: var(--font-semibold);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.btn-primary:hover {
    background-color: #1f2937;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background-color: var(--light-gray);
    color: var(--primary-dark);
    border: 1px solid var(--border-gray);
}

.btn-secondary:hover {
    background-color: var(--medium-gray);
}

/* Cards */
.card {
    background-color: var(--white);
    border-radius: var(--radius-extra-large);
    padding: var(--spacing-extra-large);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Screenshot styling */
.screenshot {
    background: transparent !important;
    border-radius: var(--radius-large);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.screenshot:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Staggered animations */
.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

.screenshot:nth-child(1) { animation-delay: 0.1s; }
.screenshot:nth-child(2) { animation-delay: 0.2s; }
.screenshot:nth-child(3) { animation-delay: 0.3s; }

/* Hero Section */
.hero {
    background-color: #FCF9F1;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: var(--spacing-large);
    color: var(--primary-dark);
    opacity: 0;
    animation: fadeInUp 1s ease 0.2s forwards;
}

.hero p {
    font-size: var(--subtitle);
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto var(--spacing-extra-large);
    opacity: 0;
    animation: fadeInUp 1s ease 0.4s forwards;
}

.hero-image {
    max-width: 300px;
    margin: 0 auto var(--spacing-extra-large);
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
    position: relative;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    height: auto;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
}

/* Features */
.features {
    background-color: var(--white);
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-extra-large);
    margin-top: var(--spacing-extra-large);
}

/* Screenshots Container */
.screenshots-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 20px;
    flex-wrap: wrap;
}

.screenshots-container img {
    width: 200px;
    height: auto;
    display: block;
}

.feature {
    text-align: center;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-large);
    background-color: var(--light-gray);
    border-radius: var(--radius-large);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 40px;
    height: 40px;
}

.feature h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-medium);
}

.feature p {
    color: var(--text-gray);
    margin-bottom: 0;
}

/* Download Section */
.download {
    background-color: var(--light-gray);
    text-align: center;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-large);
    flex-wrap: wrap;
}

.download-btn {
    display: inline-block;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
}

.download-btn img {
    width: auto;
    height: 60px;
    border-radius: var(--radius-medium);
}

/* Footer */
footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-large);
}

.footer-links {
    display: flex;
    gap: var(--spacing-extra-large);
    list-style: none;
}

.footer-links a {
    color: var(--light-text-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-extra-large);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-small);
    font-weight: var(--font-semibold);
    color: var(--primary-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-medium);
    border: 1px solid var(--border-gray);
    border-radius: var(--radius-medium);
    background-color: var(--light-gray);
    font-size: var(--body);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(17, 24, 39, 0.1);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Parallax effect */
.parallax {
    transform: translateZ(0);
    will-change: transform;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-large);
    }
    
    .header-content {
        padding: var(--spacing-medium) var(--spacing-large);
    }
    
    nav ul {
        gap: var(--spacing-large);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .screenshots-container {
        gap: 20px;
        padding: 40px 20px;
    }
    
    .screenshots-container img {
        width: 180px;
    }
}

@media (max-width: 480px) {
    nav {
        display: none;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: var(--body);
    }
    
    .screenshots-container {
        flex-direction: column;
        gap: 30px;
        padding: 40px 20px;
    }
    
    .screenshots-container img {
        width: 160px;
    }
}