/* PayMe - Styles principaux - Auralink Design System */

@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Auralink Color Palette */
    --color-primary: #156d95;
    --color-primary-dark: #146e96;
    --color-primary-light: #e6f3f9;
    --color-white: #FFFFFF;
    --color-bg-main: #FFFFFF;
    --color-bg-secondary: #fafafa;
    --color-bg-tertiary: #e9e9e9;
    --color-text-primary: #202020;
    --color-text-secondary: #666666;
    --color-text-tertiary: #7C7F88;
    --color-text-muted: #9a9a9a;
    --color-text-dark: #111A4A;
    --color-border: #e5e5e5;
    --color-black: #1A1A1A;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e9e9e9;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #666666;
    --color-gray-700: #525252;
    --color-gray-800: #202020;
    --color-gray-900: #171717;
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    
    /* Figtree Typography */
    --font-sans: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Geist Mono', 'SF Mono', 'Monaco', 'Courier New', monospace;
    
    /* Border Radius - Premium rounded corners */
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    --border-radius-full: 9999px;
    
    /* Transitions - Smooth, non-intrusive */
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows - Subtle with backdrop blur */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow: 0 2px 8px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
}

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

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-main);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography - Auralink Scale */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

h1 { font-size: 3.5rem; } /* 56px */
h2 { font-size: 2.5rem; } /* 40px */
h3 { font-size: 1.5rem; } /* 24px */
h4 { font-size: 1.25rem; } /* 20px */
h5 { font-size: 1.125rem; } /* 18px */
h6 { font-size: 1rem; } /* 16px */

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-sm {
    max-width: 600px;
}

/* Buttons - Auralink Style */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.5;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-gray-300);
}

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

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

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Cards - Premium Style */
.card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    border-bottom: 1px solid var(--color-gray-200);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
}

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

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-700);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control.error {
    border-color: var(--color-error);
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-white);
    cursor: pointer;
    transition: var(--transition);
}

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

.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.form-error {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-error);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1.5rem;
}

.alert-success {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #10B981;
}

.alert-error {
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid #EF4444;
}

.alert-warning {
    background-color: #FEF3C7;
    color: #92400E;
    border: 1px solid #F59E0B;
}

.alert-info {
    background-color: var(--color-primary-light);
    color: #1E3A8A;
    border: 1px solid var(--color-primary);
}

/* Navigation - Sticky with Blur Effect */
.navbar {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.navbar-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
}

.navbar-link {
    font-weight: 500;
    color: var(--color-gray-700);
}

.navbar-link:hover {
    color: var(--color-primary);
}

/* Hero Section - Premium Style */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(21, 109, 149, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    text-align: center;
    padding: 2rem;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
}

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.auth-card {
    width: 100%;
    max-width: 450px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.auth-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--color-gray-600);
    font-size: 0.875rem;
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    color: var(--color-gray-500);
    position: relative;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background-color: var(--color-gray-300);
}

.auth-divider::before {
    left: 0;
}

.auth-divider::after {
    right: 0;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

.w-full {
    width: 100%;
}

/* Scroll Animations - Fade In & Slide Up */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* Badge/Label with Monospace */
.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius-full);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.badge-primary {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Stats Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Testimonial Section */
.testimonial-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.testimonial-content {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-primary);
}

.testimonial-name {
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 0.25rem;
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* FAQ Section */
.faq-item {
    background: var(--color-white);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--color-bg-secondary);
}

.faq-icon {
    transition: transform 0.3s ease;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
    padding: 0 1.5rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 1.5rem 1.5rem;
}

/* Responsive - Mobile First */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; } /* 40px */
    h2 { font-size: 2rem; } /* 32px */
    h3 { font-size: 1.5rem; } /* 24px */
    
    .hero {
        padding: 4rem 0 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .navbar-menu {
        gap: 0.75rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .auth-card {
        padding: 2rem 1.5rem;
    }
    
    .btn-lg {
        width: 100%;
        padding: 1rem 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}