/* ==============================
   Kepifo - Digital Photo Frames
   Corporate Website Stylesheet
   ============================== */

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

:root {
    --primary: #0a1628;
    --primary-light: #1a2d4a;
    --accent: #00b4d8;
    --accent-dark: #0096b7;
    --gold: #e8a838;
    --text-light: #f8f9fa;
    --text-dark: #212529;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border: #dee2e6;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 16px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

ul { list-style: none; }

/* ============ HEADER / NAV ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
}

.nav-links a {
    color: rgba(248,249,250,0.75);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-light);
}

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

/* Mobile Menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 26px;
    height: 2px;
    background: var(--text-light);
    transition: var(--transition);
}

/* ============ HERO ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #0d3b66 100%);
    position: relative;
    overflow: hidden;
    padding: 120px 40px 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(0,180,216,0.08) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    max-width: 1280px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-light);
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-text h1 .highlight {
    color: var(--accent);
    position: relative;
}

.hero-text p {
    font-size: 1.2rem;
    color: rgba(248,249,250,0.7);
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,180,216,0.35);
}

.btn-outline {
    background: transparent;
    color: var(--text-light);
    border: 2px solid rgba(248,249,250,0.3);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-dark {
    background: var(--primary);
    color: var(--text-light);
}

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

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

.hero-image img {
    width: 100%;
    max-width: 520px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Floating particles for hero */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.hero-particles .particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(0,180,216,0.3);
    border-radius: 50%;
    animation: float-particle 15s infinite linear;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

/* ============ SECTIONS ============ */
.section {
    padding: 100px 40px;
}

.section-dark {
    background: var(--primary);
    color: var(--text-light);
}

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

.section-white {
    background: var(--bg-white);
}

.section-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--text-light);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header .label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto;
}

.section-dark .section-header p {
    color: rgba(248,249,250,0.65);
}

/* ============ FEATURES ============ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(0,180,216,0.1), rgba(0,180,216,0.05));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============ PRODUCTS ============ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border);
}

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

.product-image {
    height: 280px;
    overflow: hidden;
    position: relative;
    background: #f0f2f5;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 28px;
}

.product-info h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.product-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.product-tag {
    display: inline-block;
    background: rgba(0,180,216,0.1);
    color: var(--accent-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

/* ============ STATS ============ */
.stats-section {
    padding: 80px 40px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    color: var(--bg-white);
}

.stat-number {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.85;
    font-weight: 500;
}

/* ============ WHY CHOOSE US ============ */
.benefits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.benefits-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.benefits-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.benefit-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.benefit-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: rgba(0,180,216,0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.benefit-item h4 {
    font-size: 1.15rem;
    color: var(--primary);
    margin-bottom: 6px;
}

.benefit-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============ CTA ============ */
.cta-section {
    padding: 100px 40px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, #0d3b66 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(0,180,216,0.12) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.6rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.15rem;
    color: rgba(248,249,250,0.7);
    margin-bottom: 36px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============ FOOTER ============ */
.footer {
    background: var(--primary);
    color: rgba(248,249,250,0.65);
    padding: 60px 40px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    max-width: 1280px;
    margin: 0 auto;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(248,249,250,0.1);
}

.footer-brand .logo {
    margin-bottom: 16px;
    display: block;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    color: var(--text-light);
    font-size: 1rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(248,249,250,0.65);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: rgba(248,249,250,0.5);
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-links {
    display: flex;
    gap: 24px;
}

/* ============ PAGE BANNER ============ */
.page-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 140px 40px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center bottom, rgba(0,180,216,0.1) 0%, transparent 60%);
}

.page-banner h1 {
    font-size: 2.8rem;
    color: var(--text-light);
    position: relative;
    z-index: 1;
    margin-bottom: 12px;
}

.page-banner p {
    color: rgba(248,249,250,0.6);
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
}

/* ============ ABOUT PAGE ============ */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg-white);
}

.timeline-item h4 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 6px;
}

.timeline-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 40px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-white);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
}

.value-card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 10px;
}

.value-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============ CONTACT PAGE ============ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-item .icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: rgba(0,180,216,0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.contact-item h4 {
    color: var(--primary);
    margin-bottom: 6px;
}

.contact-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.contact-form h3 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,180,216,0.15);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ============ APPS PAGE ============ */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.app-card {
    display: flex;
    gap: 32px;
    align-items: center;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.app-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.app-icon {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    box-shadow: 0 8px 24px rgba(0,180,216,0.3);
}

.app-details h3 {
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.app-details p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.app-badges {
    display: flex;
    gap: 12px;
}

.app-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: var(--primary);
    color: var(--text-light);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.app-badge:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* ============ TERMS PAGE ============ */
.terms-content {
    max-width: 860px;
    margin: 0 auto;
}

.terms-content h2 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(0,180,216,0.2);
}

.terms-content h2:first-child {
    margin-top: 0;
}

.terms-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.8;
}

.terms-content ul {
    padding-left: 24px;
    margin-bottom: 16px;
}

.terms-content ul li {
    list-style: disc;
    color: var(--text-muted);
    margin-bottom: 8px;
    line-height: 1.7;
}

.terms-content strong {
    color: var(--text-dark);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-text p { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-image { order: -1; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .about-intro { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .apps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .menu-toggle { display: flex; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 22, 40, 0.98);
        padding: 24px 40px;
        gap: 20px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .hero-text h1 { font-size: 2.4rem; }
    .section { padding: 60px 20px; }
    .section-header h2 { font-size: 2rem; }
    .features-grid,
    .products-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .values-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .page-banner h1 { font-size: 2rem; }
    .cta-content h2 { font-size: 2rem; }
    .nav-container { padding: 0 20px; }
    .app-card { flex-direction: column; text-align: center; }
    .app-badges { justify-content: center; }
}