/* ========================================
   CSS Variables & Root Styles
   ======================================== */

:root {
    /* Color Palette */
    --color-primary: #004AAD;
    --color-accent: #00BFA6;
    --color-background: #F9FAFB;
    --color-text: #1E293B;
    --color-text-light: #64748B;
    --color-footer-bg: #F1F3F5;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    --color-success: #10B981;
    --color-error: #EF4444;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

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

    /* Transitions */
    --transition-speed: 0.2s;
    --transition-easing: ease-in-out;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* ========================================
   Global Reset & Base Styles
   ======================================== */

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Header / Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-speed) var(--transition-easing);
}

.header.sticky {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

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

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-speed) var(--transition-easing);
}

.nav-link:hover::after {
    width: 80%;
}

.btn-contact {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.btn-contact::after {
    display: none;
}

.btn-contact:hover {
    background-color: #003d8f;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hamburger Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle-icon {
    width: 28px;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-speed) var(--transition-easing);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #004AAD 0%, #003d8f 40%, #00BFA6 100%);
    z-index: -2;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../assets/hero-grid-overlay.svg');
    background-size: cover;
    background-position: center;
    opacity: 0.6;
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--color-white);
    z-index: 10;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    line-height: 1.6;
}

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

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-speed) var(--transition-easing);
}

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

.btn-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   Section Styles
   ======================================== */

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

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

.section-contact {
    background-color: var(--color-background);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.section-description {
    font-size: 1.125rem;
    text-align: center;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.7;
}

/* ========================================
   Product Grid & Cards
   ======================================== */

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.product-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-speed) var(--transition-easing);
}

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

.product-logo {
    margin-bottom: var(--spacing-md);
}

.product-logo img {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    object-fit: contain;
}

.product-name {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.product-description {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.product-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-speed) var(--transition-easing);
}

.product-link:hover {
    color: var(--color-accent);
    transform: translateX(5px);
}

/* ========================================
   Service Grid & Cards
   ======================================== */

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-speed) var(--transition-easing);
    display: flex;
    flex-direction: column;
}

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

.service-icon {
    margin-bottom: var(--spacing-md);
}

.service-icon img {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    object-fit: contain;
}

.service-name {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.service-description {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.service-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-speed) var(--transition-easing);
    margin-top: auto;
}

.service-link:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   Contact Form
   ======================================== */

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.contact-item {
    font-size: 1rem;
    color: var(--color-text);
}

.contact-item strong {
    color: var(--color-primary);
    margin-right: var(--spacing-xs);
}

.contact-item a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-easing);
}

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

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: 0.875rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-speed) var(--transition-easing);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 74, 173, 0.1);
}

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

/* Honeypot field - completely hidden from human users */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.btn-form {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    text-align: center;
    font-weight: 500;
    border-radius: var(--radius-md);
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.form-status.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--color-footer-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: var(--color-text);
    font-size: 0.938rem;
    font-weight: 500;
}

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

.footer-text {
    color: var(--color-text-light);
    font-size: 0.938rem;
    margin-bottom: var(--spacing-xs);
}

.footer-copyright {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.footer-contact {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

.contact-copy-item {
    position: relative;
    cursor: pointer;
    transition: transform 0.2s var(--transition-easing);
}

.contact-copy-item:hover {
    transform: translateY(-3px);
}

.contact-copy-item:active {
    transform: translateY(-1px);
}

.contact-copy-item img {
    height: 70px;
    width: auto;
    display: block;
}

.copy-tooltip {
    position: absolute;
    top: -35px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--transition-easing);
}

.copy-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--color-primary);
}

.copy-tooltip.show {
    opacity: 1;
}

.copy-hint {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: italic;
    display: inline-block;
    margin-top: 0.5rem;
}

/* ========================================
   Responsive Design
   ======================================== */

/* Desktop: ≥1200px (default styles above) */

/* Tablet: 992px - 1199px */
@media screen and (max-width: 1199px) {
    .product-grid,
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.25rem;
    }
}

/* Mobile Landscape: 600px - 991px */
@media screen and (max-width: 991px) {
    .product-grid,
    .service-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

    .section-description {
        font-size: 1rem;
    }
}

/* Mobile Portrait: <600px */
@media screen and (max-width: 599px) {
    /* Navigation */
    .nav {
        height: auto;
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-sm) 0;
    }

    .logo-img {
        height: 32px;
    }

    .nav-toggle {
        display: none;
    }

    .nav-menu {
        width: 100%;
        padding: var(--spacing-sm) 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: var(--spacing-xs) var(--spacing-sm);
        text-align: left;
    }

    .nav-link::after {
        display: none;
    }

    .btn-contact {
        width: 100%;
        text-align: center;
    }

    /* Hero */
    .hero {
        margin-top: 80px;
        min-height: 500px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    /* Sections */
    .section {
        padding: var(--spacing-lg) 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    /* Form */
    .contact-form {
        padding: var(--spacing-md);
    }

    /* Footer */
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}