/* 
   aiclothesremoverVN.site Styles
   Vietnamese-focused AI clothes remover website
*/

:root {
    /* Custom color palette - different from previous sites */
    --primary: #E60023;       /* Red - main brand color */
    --primary-light: #FF4D4D; /* Light red */
    --secondary: #FFCC33;     /* Yellow/gold - complementary accent */
    --tertiary: #3399FF;      /* Blue - accent */
    --dark: #2D2D2D;          /* Near black for text */
    --light: #FFFFFF;         /* White */
    --light-bg: #FFF5F5;      /* Very light red background */
    --gray: #888888;          /* Gray for subtle elements */
    --success: #33CC66;       /* Green for success messaging */
    
    /* Font settings */
    --font-main: 'Roboto', -apple-system, BlinkMacSystemFont, Arial, sans-serif;
    --font-heading: 'Roboto Condensed', var(--font-main);
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* Base styles and resets */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: var(--line-height-base);
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

img, svg {
    max-width: 100%;
    height: auto;
}

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-md);
}

h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary);
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

section {
    padding: var(--spacing-xl) 0;
}

/* Header */
header {
    background-color: var(--light);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
}

/* Navigation */
nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: var(--spacing-lg);
}

nav ul li a {
    font-weight: 500;
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary);
    transition: var(--transition-normal);
}

nav ul li a:hover:after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    padding: var(--spacing-xs);
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--light);
    padding: var(--spacing-xl) 0;
}

.hero h1, 
.hero p {
    color: var(--light);
}

.hero .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.hero-content {
    flex: 1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

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

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

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.2rem;
}

/* Features section */
.features {
    background-color: var(--light-bg);
    position: relative;
    overflow: hidden;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
    text-align: center;
    border-bottom: 3px solid var(--primary);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin: 0 auto var(--spacing-md);
    width: 64px;
    height: 64px;
}

/* How it works */
.how-it-works {
    background-color: var(--light);
    position: relative;
}

.process-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary);
    color: var(--light);
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.step-content {
    flex: 1;
}

.process-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
}

.cta-center {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* Why choose us */
.why-choose {
    background-color: var(--light-bg);
    position: relative;
}

.benefit-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    background: var(--light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
}

/* FAQ */
.faq {
    background-color: var(--light);
}

.accordion {
    max-width: 800px;
    margin: 0 auto;
    margin-top: var(--spacing-lg);
}

.accordion-item {
    background: var(--light);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.accordion-header {
    cursor: pointer;
    padding: var(--spacing-md);
    position: relative;
    font-size: 1.2rem;
    margin-bottom: 0;
    color: var(--dark);
}

.accordion-header::after {
    content: '+';
    position: absolute;
    right: var(--spacing-md);
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.accordion-item.active .accordion-header::after {
    content: '−';
}

.accordion-content {
    padding: 0 var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.accordion-item.active .accordion-content {
    padding: 0 var(--spacing-md) var(--spacing-md);
    max-height: 300px;
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: var(--spacing-xl) 0;
    color: var(--light);
}

.cta-content {
    text-align: center;
}

.cta-content h2,
.cta-content p {
    color: var(--light);
}

.cta-content .btn {
    margin-top: var(--spacing-md);
    background-color: var(--secondary);
    color: var(--dark);
    border-color: var(--secondary);
}

.cta-content .btn:hover {
    background-color: transparent;
    color: var(--secondary);
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--light);
    padding-top: var(--spacing-xl);
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    flex: 1;
    min-width: 200px;
    margin-bottom: var(--spacing-md);
}

.footer-nav {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-menu {
    flex: 1;
    min-width: 150px;
}

.footer-menu h4 {
    color: var(--light);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.footer-menu h4:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary);
}

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

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

.footer-menu ul li a {
    color: var(--light);
    opacity: 0.8;
}

.footer-menu ul li a:hover {
    opacity: 1;
    color: var(--secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
    text-align: center;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

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

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* Responsive styles */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content,
    .hero-image {
        text-align: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--light);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-md);
        z-index: 100;
    }
    
    nav.active ul {
        display: flex;
    }
    
    nav ul li {
        margin: var(--spacing-xs) 0;
        margin-left: 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .process-container {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
        margin: var(--spacing-md) 0;
    }
    
    .footer-top {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .btn {
        display: block;
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .feature-grid,
    .benefit-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .accordion-header {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}