/* ========================================
   BTI Website - Main Stylesheet
   Dell Technologies Partner Site
======================================== */

/* ----------------------------------------
   CSS Variables
---------------------------------------- */
:root {
    /* Primary Colors - Dell Blue Theme */
    --primary-900: #0a1628;
    --primary-800: #0d2137;
    --primary-700: #1a365d;
    --primary-600: #1e4a8e;
    --primary-500: #0076ce; /* Dell Blue */
    --primary-400: #2196f3;
    --primary-300: #64b5f6;
    --primary-200: #90caf9;
    --primary-100: #bbdefb;

    /* Neutral Colors */
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;

    /* Accent Colors */
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;

    /* Typography */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-tooltip: 500;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ----------------------------------------
   Utility Classes
---------------------------------------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header.light {
    color: var(--white);
}

.section-header.light .section-desc {
    color: var(--gray-300);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-header.light .section-tag {
    color: var(--primary-300);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.section-header.light .section-title {
    color: var(--white);
}

.section-desc {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ----------------------------------------
   Buttons
---------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-500);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-900);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-700);
}

.btn-white {
    background: var(--white);
    color: var(--primary-700);
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
}

/* ----------------------------------------
   Header
---------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header-top {
    background: var(--primary-900);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--gray-300);
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.contact-info i {
    color: var(--primary-400);
}

.quick-links {
    display: flex;
    gap: var(--spacing-md);
}

.quick-links a {
    color: var(--gray-300);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.quick-links a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-md) 0;
}

.header.scrolled .navbar {
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 900;
    color: var(--primary-700);
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xs);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 500;
    color: var(--gray-700);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-500);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.nav-item.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.dropdown-menu li a:hover {
    background: var(--gray-50);
    color: var(--primary-500);
    padding-left: var(--spacing-xl);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-fast);
}

/* ----------------------------------------
   Hero Section
---------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    overflow: hidden;
    background: linear-gradient(135deg, #0a1628 0%, #1a365d 50%, #0d47a1 100%);
}

.hero-slider {
    width: 100%;
}

.hero-slide {
    position: relative;
    width: 100%;
}

.hero-slide.active {
    display: block;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
}

.partner-badge {
    width: 80px;
    filter: brightness(0) invert(1);
}

.hero-badge span {
    color: var(--primary-300);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 900;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-title .highlight {
    color: var(--primary-300);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-300);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: 900;
    color: var(--white);
}

.stat-suffix {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-300);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--gray-400);
    margin-top: var(--spacing-xs);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* Server Illustration */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.server-illustration {
    position: relative;
    width: 400px;
    height: 400px;
}

.server-rack {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    background: linear-gradient(145deg, #2d3748, #1a202c);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-2xl),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.server-unit {
    height: 50px;
    background: linear-gradient(90deg, #4a5568, #2d3748);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    position: relative;
    box-shadow: inset 0 -2px 4px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.server-unit::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
    animation: blink 2s infinite;
}

.server-unit::after {
    content: '';
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 6px;
    background: repeating-linear-gradient(
        90deg,
        #1a202c,
        #1a202c 4px,
        #4a5568 4px,
        #4a5568 6px
    );
    border-radius: 2px;
}

.server-unit.active::before {
    background: var(--primary-400);
    box-shadow: 0 0 15px var(--primary-400);
    animation: pulse 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes pulse {
    0%, 100% { transform: translateY(-50%) scale(1); }
    50% { transform: translateY(-50%) scale(1.2); }
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ----------------------------------------
   Partners Section
---------------------------------------- */
.partners-section {
    background: var(--gray-50);
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--gray-200);
}

.partners-banner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

.partner-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.partner-item img {
    height: 30px;
    opacity: 0.8;
}

.partner-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-500);
}

.partner-divider {
    width: 1px;
    height: 30px;
    background: var(--gray-300);
}

/* ----------------------------------------
   Products Section
---------------------------------------- */
.products-section {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.product-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.product-card:hover {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.product-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--accent-green);
    color: var(--white);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.product-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.product-icon i {
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.product-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.product-desc {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.product-features {
    margin-bottom: var(--spacing-lg);
}

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.product-features li i {
    color: var(--accent-green);
    font-size: var(--font-size-xs);
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-500);
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: gap var(--transition-fast);
}

.product-link:hover {
    gap: var(--spacing-md);
}

/* ----------------------------------------
   Why Section
---------------------------------------- */
.why-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.why-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
}

.why-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.why-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    border-radius: 50%;
    margin: 0 auto var(--spacing-lg);
}

.why-icon i {
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.why-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.why-card p {
    font-size: var(--font-size-sm);
    color: var(--gray-300);
    line-height: 1.7;
}

/* ----------------------------------------
   Clients Section
---------------------------------------- */
.clients-section {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-50);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.client-logo {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    transition: all var(--transition-base);
}

.client-logo:hover {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-md);
}

.client-placeholder {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

/* ----------------------------------------
   CTA Section
---------------------------------------- */
.cta-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--primary-100);
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

/* ----------------------------------------
   News Section
---------------------------------------- */
.news-section {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.news-card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.news-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

.news-date {
    flex-shrink: 0;
    width: 70px;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--primary-500);
    border-radius: var(--radius-md);
    color: var(--white);
}

.news-date .day {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.news-date .month {
    display: block;
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.news-content {
    flex: 1;
}

.news-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--primary-500);
    background: var(--primary-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.news-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.news-excerpt {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.news-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-500);
}

.news-link:hover {
    text-decoration: underline;
}

/* ----------------------------------------
   Footer
---------------------------------------- */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding-top: var(--spacing-4xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid var(--gray-800);
}

.footer-logo {
    margin-bottom: var(--spacing-lg);
}

.footer-logo .logo-text {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    color: var(--white);
}

.footer-logo .logo-tagline {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.footer-desc {
    font-size: var(--font-size-sm);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.footer-certifications img {
    height: 30px;
    opacity: 0.7;
    filter: grayscale(100%);
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

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

.footer-links ul li a {
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links ul li a:hover {
    color: var(--white);
}

.contact-list li {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.contact-list li i {
    color: var(--primary-400);
    width: 16px;
    flex-shrink: 0;
}

.footer-bottom {
    padding: var(--spacing-xl) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: var(--font-size-sm);
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-bottom-links a {
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

/* ----------------------------------------
   Quick Contact & Back to Top
---------------------------------------- */
.quick-contact {
    position: fixed;
    bottom: 100px;
    right: var(--spacing-xl);
    z-index: var(--z-fixed);
}

.quick-contact-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--primary-500);
    color: var(--white);
    border-radius: 50%;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.quick-contact-btn:hover {
    background: var(--primary-600);
    transform: scale(1.1);
}

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gray-800);
    color: var(--white);
    border-radius: 50%;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-500);
    transform: translateY(-3px);
}

/* ----------------------------------------
   Responsive Design
---------------------------------------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-image {
        display: none;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        padding-left: var(--spacing-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .nav-item.has-dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .hero-buttons {
        flex-direction: column;
    }

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

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

    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .partners-banner {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .partner-divider {
        width: 50px;
        height: 1px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }
}

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

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

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

    .news-card {
        flex-direction: column;
    }

    .news-date {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .news-date .day,
    .news-date .month {
        display: inline;
    }
}

/* ----------------------------------------
   Page-specific Styles (for sub-pages)
---------------------------------------- */
.page-hero {
    padding: 180px 0 80px;
    background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
    text-align: center;
}

.page-hero h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.page-hero .breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray-400);
}

.page-hero .breadcrumb a {
    color: var(--gray-400);
}

.page-hero .breadcrumb a:hover {
    color: var(--white);
}

.page-hero .breadcrumb span {
    color: var(--white);
}

.page-content {
    padding: var(--spacing-4xl) 0;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}