/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

:root {
    --primary: #1a73e8;
    --primary-dark: #0d47a1;
    --primary-light: #4fc3f7;
    --accent: #ff6f00;
    --accent-light: #ffab40;
    --bg: #f5f7fa;
    --bg-card: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #4a4a6a;
    --border: #e0e4ed;
    --shadow: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-hover: 0 16px 48px rgba(0,0,0,0.12);
    --radius: 16px;
    --radius-sm: 8px;
    --glass: rgba(255,255,255,0.7);
    --glass-border: rgba(255,255,255,0.3);
    --nav-bg: rgba(255,255,255,0.85);
    --footer-bg: #0a1628;
    --footer-text: #b0bec5;
    --gradient-hero: linear-gradient(135deg, #0d47a1 0%, #1a73e8 40%, #4fc3f7 100%);
    --gradient-card: linear-gradient(145deg, #ffffff, #f0f4ff);
    --success: #00c853;
    --warning: #ffd600;
    --danger: #ff1744;
}

body.dark-mode {
    --bg: #0a0e1a;
    --bg-card: #141a2b;
    --text: #e8eaf6;
    --text-secondary: #9ea7c0;
    --border: #2a3050;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-hover: 0 16px 48px rgba(0,0,0,0.6);
    --glass: rgba(20,26,43,0.75);
    --glass-border: rgba(255,255,255,0.08);
    --nav-bg: rgba(10,14,26,0.9);
    --footer-bg: #050810;
    --footer-text: #6a7a8f;
    --gradient-hero: linear-gradient(135deg, #050810 0%, #0d2137 40%, #1a3a5c 100%);
    --gradient-card: linear-gradient(145deg, #141a2b, #1a2238);
}

html {
    scroll-behavior: smooth;
}

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

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

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

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

/* ===== Container & Grid ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 4px;
    margin: 12px auto 0;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.glass-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 16px rgba(26,115,232,0.3);
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26,115,232,0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

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

.btn-accent {
    background: var(--accent);
    box-shadow: 0 4px 16px rgba(255,111,0,0.3);
}

.btn-accent:hover {
    background: #e65100;
    box-shadow: 0 8px 24px rgba(255,111,0,0.4);
}

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

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

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

.gap-1 { gap: 1rem; }
.gap-2 { gap: 2rem; }
.mt-2 { margin-top: 2rem; }
.mt-4 { margin-top: 4rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 4rem; }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.fs-large { font-size: 1.2rem; }

/* ===== Header & Nav ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.nav-menu li a {
    padding: 8px 16px;
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text);
    transition: all 0.2s ease;
}

.nav-menu li a:hover, .nav-menu li a.active {
    background: var(--primary);
    color: white;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle, .search-toggle, .menu-toggle {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text);
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.theme-toggle:hover, .search-toggle:hover, .menu-toggle:hover {
    background: var(--border);
}

.menu-toggle {
    display: none;
    font-size: 1.8rem;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 999;
    padding: 2rem;
    overflow-y: auto;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav.open {
    display: flex;
}

.mobile-nav a {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.mobile-nav a:hover {
    background: var(--primary);
    color: white;
}

/* ===== Hero Banner ===== */
.hero {
    padding-top: 70px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-slider {
    position: absolute;
    inset: 0;
    display: flex;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.hero-slide {
    min-width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 1;
}

.hero-slide:nth-child(1) {
    background: linear-gradient(135deg, #0d47a1, #1a73e8, #4fc3f7);
}

.hero-slide:nth-child(2) {
    background: linear-gradient(135deg, #1a237e, #283593, #3949ab);
}

.hero-slide:nth-child(3) {
    background: linear-gradient(135deg, #004d40, #00695c, #00897b);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: center;
    color: white;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.hero-content p {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.hero-indicators button {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.6);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-indicators button.active {
    background: white;
    border-color: white;
    transform: scale(1.2);
}

/* ===== Sections ===== */
section {
    padding: 5rem 0;
}

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

/* ===== About ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.about-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--gradient-card);
    padding: 2rem;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Values ===== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.value-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.value-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.value-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.value-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Products ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.product-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.product-card .product-image {
    height: 220px;
    background: var(--gradient-card);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.product-card .product-info {
    padding: 1.5rem;
}

.product-card .product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.product-card .product-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Stats ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem 1rem;
}

.stat-item .number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.2;
}

.stat-item .label {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* ===== Team ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.team-card {
    text-align: center;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.team-card .avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    background: var(--gradient-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
}

.team-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.team-card .role {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.team-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ===== Testimonials ===== */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: 0.5rem;
    left: 1.5rem;
    color: var(--primary);
    opacity: 0.15;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.testimonial-card .author {
    font-weight: 700;
    color: var(--text);
}

.testimonial-card .company {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Partners ===== */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
    align-items: center;
}

.partner-item {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--border);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.partner-item:hover {
    opacity: 1;
}

.partner-item svg {
    width: 80px;
    height: 40px;
    margin: 0 auto;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.open {
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 1.2rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.05rem;
    background: var(--bg-card);
    border: none;
    width: 100%;
    text-align: left;
    color: var(--text);
}

.faq-question::after {
    content: '+';
    font-size: 1.6rem;
    font-weight: 300;
    transition: transform 0.3s ease;
    color: var(--primary);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.5rem;
    color: var(--text-secondary);
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 1.5rem 1.2rem;
}

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

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

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

.contact-info-item .icon {
    font-size: 1.5rem;
    color: var(--primary);
    min-width: 40px;
}

.contact-info-item h4 {
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.contact-info-item p {
    color: var(--text-secondary);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input, .contact-form textarea {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.contact-form input:focus, .contact-form textarea:focus {
    border-color: var(--primary);
}

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

/* ===== Footer ===== */
footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-col h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
}

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

.footer-col ul li {
    margin-bottom: 0.6rem;
}

.footer-col ul li a {
    color: var(--footer-text);
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.footer-col ul li a:hover {
    color: white;
}

.footer-bottom {
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: 2rem;
}

.footer-bottom a {
    color: var(--primary-light);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(26,115,232,0.4);
    z-index: 999;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(26,115,232,0.5);
}

/* ===== Search Overlay ===== */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.search-overlay.open {
    display: flex;
}

.search-box {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 2rem;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 24px 80px rgba(0,0,0,0.3);
}

.search-box input {
    width: 100%;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 1.1rem;
    outline: none;
}

.search-box input:focus {
    border-color: var(--primary);
}

.search-results {
    margin-top: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.search-results .result-item {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s ease;
}

.search-results .result-item:hover {
    background: var(--border);
}

.search-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    color: white;
    cursor: pointer;
}

/* ===== Scroll Animation ===== */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
    .partner-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .menu-toggle { display: flex; }
    .hero-content h1 { font-size: 2.2rem; }
    .hero-content p { font-size: 1rem; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr 1fr; }
    .team-grid { grid-template-columns: 1fr 1fr; }
    .partner-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonial-grid { grid-template-columns: 1fr; }
    .about-content { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 1.8rem; }
    section { padding: 3rem 0; }
}

@media (max-width: 480px) {
    .values-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .partner-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 1.8rem; }
    .header-inner { padding: 0 12px; }
}