/* ===== HINEX - MOBILE-FIRST RESPONSIVE CSS ===== */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-blue: #2563eb;
    --primary-green: #10b981;
    --primary-purple: #8b5cf6;
    --primary-orange: #f59e0b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --text-white: #ffffff;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    
    /* Border Colors */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    
    /* 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);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Base Typography */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: 2rem;
    font-weight: 700;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

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

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

/* Container and Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-2xl) 0;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -var(--space-sm);
}

.col {
    flex: 1;
    padding: 0 var(--space-sm);
    min-width: 0;
}

/* Header and Navigation */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    position: relative;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: none;
    list-style: none;
    gap: var(--space-xl);
}

.nav-menu.active {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--space-sm) 0;
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.875rem;
    min-height: 44px; /* Touch-friendly */
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

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

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

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

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    min-height: 48px;
}

/* Hero Section */
.hero {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: calc(80px + var(--space-2xl)) 0 var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Product Cards */
.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.product-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--border-light);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.product-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.product-icon.personal {
    background: var(--gradient-primary);
}

.product-icon.business {
    background: var(--gradient-secondary);
}

.product-icon.credit {
    background: var(--gradient-success);
}

.product-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.product-features li {
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--space-lg);
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-green);
    font-weight: bold;
}

/* Forms */
.form-container {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    margin-top: var(--space-xl);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--bg-primary);
    min-height: 44px; /* Touch-friendly */
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
    color: var(--text-light);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.checkbox-group input[type="checkbox"] {
    margin-top: 2px;
    min-width: 16px;
    min-height: 16px;
}

/* Steps Section */
.steps-section {
    background: var(--bg-secondary);
    padding: var(--space-3xl) 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.step-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto var(--space-lg);
}

/* Why Choose Section */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-section h3 {
    color: var(--text-white);
    margin-bottom: var(--space-lg);
}

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

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--text-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

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

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Responsive Design - Tablet */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
    
    .nav-menu {
        display: flex;
        position: static;
        background: none;
        flex-direction: row;
        padding: 0;
        box-shadow: none;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-container {
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* Responsive Design - Desktop */
@media (min-width: 1024px) {
    h1 {
        font-size: 3.5rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    .hero h1 {
        font-size: 4rem;
    }
    
    .hero p {
        font-size: 1.25rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .hero-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
        align-items: center;
        text-align: left;
    }
    
    .hero-text {
        order: 1;
    }
    
    .hero-form {
        order: 2;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
    
    .section {
        padding: var(--space-3xl) 0;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero::before {
        background-size: 50px 50px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --border-light: #374151;
        --border-medium: #4b5563;
    }
}

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

/* Print Styles */
@media print {
    .header,
    .footer,
    .btn,
    .form-container {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
}