/**
 * Goodev meet - Home Page Styles
 * Design moderne et professionnel avec approche mobile-first
 * Version: 2.0
 */

/* ========================================
   RESET & BASE
   ======================================== */

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

:root {
    /* Colors - Light Mode */
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-secondary: #764ba2;
    --color-accent: #f093fb;
    
    --color-bg: #ffffff;
    --color-bg-secondary: #f7fafc;
    --color-bg-tertiary: #edf2f7;
    
    --color-text: #1a202c;
    --color-text-secondary: #4a5568;
    --color-text-tertiary: #718096;
    
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-index */
    --z-header: 1000;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ========================================
   CONTAINER
   ======================================== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ========================================
   HEADER
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-md);
}

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

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
}

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

.btn-gradient {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.btn-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-gradient:hover::before {
    opacity: 1;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-base);
}

.btn-icon:hover {
    background-color: var(--color-bg-tertiary);
}

.btn .btn-icon {
    font-size: var(--font-size-lg);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.badge-icon {
    font-size: var(--font-size-base);
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-3xl) 0 var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: var(--font-size-6xl);
    }
}

/* ========================================
   SECTIONS
   ======================================== */

.features,
.cta {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
    text-align: center;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

/* ========================================
   FEATURES GRID
   ======================================== */

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.feature-icon-wrapper {
    margin-bottom: var(--spacing-md);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    font-size: var(--font-size-2xl);
    border-radius: var(--radius-xl);
}

.gradient-bg-1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.gradient-bg-2 { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.gradient-bg-3 { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.gradient-bg-4 { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.gradient-bg-5 { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.gradient-bg-6 { background: linear-gradient(135deg, #30cfd0 0%, #330867 100%); }
.gradient-bg-7 { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }
.gradient-bg-8 { background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%); }

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.feature-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary);
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-full);
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta {
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.cta-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.05;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-2xl);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

.cta-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .cta-title {
        font-size: var(--font-size-4xl);
    }
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr;
    }
}

.footer-brand {
    max-width: 400px;
}

.footer-tagline {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.footer-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: var(--spacing-sm);
}

.footer-list a {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-list a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-animate] {
    opacity: 0;
}

[data-animate].animated {
    animation: fadeUp 0.6s ease-out forwards;
}

[data-animate="fade-in"].animated {
    animation: fadeIn 0.6s ease-out forwards;
}

/* Animation delays */
[data-delay="0"] { animation-delay: 0ms; }
[data-delay="100"] { animation-delay: 100ms; }
[data-delay="200"] { animation-delay: 200ms; }
[data-delay="300"] { animation-delay: 300ms; }

/* ========================================
   ACCESSIBILITY
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   UTILITIES
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}