/* ========================================
   Sanying Slipform Machine - Global Styles
   ======================================== */

/* CSS Variables */
:root {
    --primary: #E63946;
    --primary-dark: #C62828;
    --secondary: #1D3557;
    --accent: #F4A261;
    --dark: #1a1a2e;
    --light: #f8f9fa;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --white: #ffffff;
    --success: #28a745;
    
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --transition: all 0.3s ease;
    --header-height: 70px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    line-height: var(--line-height);
    color: var(--dark);
    background-color: var(--white);
    padding-top: var(--header-height);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    color: var(--secondary);
    position: relative;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
}

.section-title p {
    color: var(--gray);
    max-width: 600px;
    margin: 1rem auto 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

.btn-secondary:hover {
    background: #152a45;
    color: var(--white);
}

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

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

.btn-whatsapp {
    background: #25D366;
    color: var(--white);
}

.btn-whatsapp:hover {
    background: #128C7E;
    color: var(--white);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
    color: var(--white);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/assets/images/hero-bg.jpg') center/cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-block;
    background: var(--accent);
    color: var(--dark);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent);
}

.hero-desc {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.hero-feature svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Section */
.section {
    padding: 80px 0;
}

.section-light {
    background: var(--light);
}

.section-dark {
    background: var(--secondary);
    color: var(--white);
}

/* Product Cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    position: relative;
    height: 240px;
    background: var(--gray-light);
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: var(--white);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.product-content {
    padding: 1.5rem;
}

.product-content h3 {
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.product-content p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.product-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--light);
    border-radius: var(--radius-md);
}

.spec-item {
    display: flex;
    flex-direction: column;
}

.spec-label {
    font-size: 0.75rem;
    color: var(--gray);
    text-transform: uppercase;
}

.spec-value {
    font-weight: 600;
    color: var(--dark);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.feature-item h3 {
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--gray);
    font-size: 0.95rem;
}

/* Applications */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.application-item {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--white);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.application-item:hover {
    background: var(--primary);
    color: var(--white);
}

.application-item svg {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    color: var(--primary);
}

.application-item:hover svg {
    color: var(--white);
}

/* Distributor Section */
.distributor-section {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--dark) 100%);
    color: var(--white);
}

.distributor-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.step-item {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--accent);
    color: var(--dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step-item h4 {
    margin-bottom: 0.5rem;
}

.step-item p {
    opacity: 0.8;
    font-size: 0.9rem;
}

.distributor-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
}

.benefit-item svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
    flex-shrink: 0;
}

.benefit-item h4 {
    margin-bottom: 0.25rem;
}

.benefit-item p {
    opacity: 0.8;
    font-size: 0.9rem;
    margin: 0;
}

/* Contact Section */
.contact-section {
    background: var(--light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3 {
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    color: var(--secondary);
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--gray);
}

.contact-item a:hover {
    color: var(--primary);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--secondary);
}

.form-group label .required {
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

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

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-privacy {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}