/* ==========================================
   Rinco International - Sustainable Bags
   English Version with Standard Logo
   Cloudflare Pages Deployment
   ========================================== */

:root {
    --primary: #1a5f4a;
    --primary-dark: #0f3d2f;
    --primary-light: #2d8a6a;
    --secondary: #c0845c;
    --accent: #e9c46a;
    --text: #1a1a1a;
    --text-light: #5c5c5c;
    --text-lighter: #888;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --bg-cream: #fefae0;
    --border: #e8e8e8;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 10px;
    --radius-sm: 6px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text);
}

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

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

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #b86f4a;
    border-color: #b86f4a;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(192, 132, 92, 0.4);
}

.btn-light {
    background: white;
    color: var(--primary);
    border-color: white;
    font-weight: 600;
}

.btn-light:hover {
    background: var(--bg-alt);
    border-color: var(--bg-alt);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 48px;
    font-size: 1.1rem;
}

/* ==========================================
   Header & Navigation
   ========================================== */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    color: var(--text);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 30px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 140px 0 100px;
}

.hero-meta {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.official-domain {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.official-domain a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.official-domain a:hover {
    color: white;
    border-bottom-color: white;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    font-family: 'Playfair Display', serif;
    margin-bottom: 1.5rem;
}

.hero-title span {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title span:nth-child(2) {
    animation-delay: 0.2s;
    color: var(--accent);
    font-size: 0.85em;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-clients {
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-clients span {
    display: block;
    margin-bottom: 1rem;
    opacity: 0.8;
    font-size: 0.95rem;
}

.client-logos {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.client-badge {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

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

/* ==========================================
   Sections
   ========================================== */
.section {
    padding: 100px 0;
}

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

.section-header h2 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-light);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.subsection-title {
    font-size: 1.75rem;
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 2.5rem;
}

/* ==========================================
   About Section
   ========================================== */
.about {
    background: var(--bg-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-content h2 {
    font-size: 3rem;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
}

.about-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.about-contact {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.contact-card.large {
    background: var(--primary);
    color: white;
}

.contact-card.large h3,
.contact-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.contact-card.large a,
.contact-card a {
    color: inherit;
    opacity: 0.9;
}

.contact-card.large a:hover,
.contact-card a:hover {
    opacity: 1;
    text-decoration: underline;
}

.contact-card p {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.contact-card p:last-child {
    margin-bottom: 0;
}

.contact-card strong {
    color: inherit;
    opacity: 0.8;
}

/* ==========================================
   Why RPET Section
   ========================================== */
.why-rpet {
    background: white;
}

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

.benefit-card {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    background: white;
}

.benefit-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 1.5rem;
}

.benefit-card h3 {
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.benefit-card p {
    font-size: 0.95rem;
    margin: 0;
    color: var(--text-light);
}

/* ==========================================
   Materials Section
   ========================================== */
.materials {
    background: var(--bg-alt);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.material-card {
    background: white;
    padding: 1.75rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary);
}

.material-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.material-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.material-header h3 {
    color: var(--primary-dark);
    font-size: 1.25rem;
    margin: 0;
}

.material-type {
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.material-codes {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--secondary);
    background: var(--bg-cream);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-bottom: 1rem;
}

.material-card p:last-child {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

.materials-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.mini-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.mini-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.mini-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
}

.mini-card h4 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.mini-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
    font-family: monospace;
    line-height: 1.6;
}

/* ==========================================
   Products Section
   ========================================== */
.products {
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-item {
    background: var(--bg-alt);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.product-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-icon {
    font-size: 4rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.product-info p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-family: monospace;
    color: var(--text-light);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-cream);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-right: 0.5rem;
    margin-bottom: 0.25rem;
}

/* ==========================================
   Certifications Section
   ========================================== */
.certifications {
    background: var(--bg-alt);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.cert-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cert-card h3 {
    color: var(--primary-dark);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.cert-card p {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
}

/* ==========================================
   Clients Section
   ========================================== */
.clients {
    background: white;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.client-item {
    background: var(--bg-alt);
    padding: 2rem 1rem;
    border-radius: var(--radius);
    text-align: center;
    font-weight: 600;
    color: var(--text);
    font-size: 1.1rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

.client-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

/* ==========================================
   CTA Section
   ========================================== */
.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact {
    background: var(--bg-alt);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 95, 74, 0.1);
}

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

.form-group select {
    cursor: pointer;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-status.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.tagline {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.1rem !important;
    margin-bottom: 1rem !important;
}

.eco-badge {
    font-size: 0.9rem !important;
    opacity: 0.8;
}

.footer-links h4 {
    color: white;
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 3rem 2rem;
        gap: 1.5rem;
        transition: var(--transition);
        box-shadow: var(--shadow);
        overflow-y: auto;
    }

    .nav-links.active {
        left: 0;
    }

    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .hero-stats {
        display: none;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links ul {
        display: inline-block;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-header h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 12px 28px;
    }

    .btn-large {
        padding: 14px 36px;
        font-size: 1rem;
    }

    .materials-grid {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .logo-img {
        height: 32px;
    }
}

/* ==========================================
   Animations
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   Print
   ========================================== */
@media print {
    .header, .contact-form, .mobile-menu-btn {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
}