@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ==========================================================================
   Design Tokens & Theme Variables
   ========================================================================== */
:root {
    /* Color Palette */
    --clr-navy-dark: hsl(222, 47%, 7%);
    --clr-navy-mid: hsl(222, 47%, 12%);
    --clr-navy-light: hsl(220, 25%, 20%);
    --clr-gray-dark: hsl(220, 15%, 15%);
    --clr-gray-light: hsl(220, 15%, 90%);
    
    --clr-white: hsl(210, 40%, 98%);
    --clr-dark: hsl(222, 47%, 5%);
    
    /* Accents (Brand specific) */
    --clr-accent-blue: hsl(207, 100%, 43%);    /* Meyton Blue */
    --clr-accent-red: hsl(0, 100%, 45%);       /* Mantis Red */
    --clr-accent-orange: hsl(25, 100%, 50%);   /* Hora Orange */
    --clr-accent-lightblue: hsl(210, 75%, 77%); /* Noptel Light Blue (#9cc6ef) */
    
    /* Validation Colors */
    --clr-validation-success: hsl(145, 63%, 49%);
    --clr-validation-error: hsl(354, 70%, 54%);
    
    /* Additional custom variables */
    --clr-accent-green: hsl(145, 63%, 49%);
    --bg-card-alt: var(--bg-tertiary);
    
    /* Light Mode Overrides (defaulting to dark mode, controlled via js) */
    --bg-primary: var(--clr-navy-dark);
    --bg-secondary: var(--clr-navy-mid);
    --bg-tertiary: var(--clr-navy-light);
    --text-primary: var(--clr-white);
    --text-secondary: hsl(210, 15%, 80%);
    --text-muted: hsl(210, 10%, 60%);
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(12, 17, 29, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-shadow: rgba(0, 0, 0, 0.4);
    
    /* Fonts */
    --ff-heading: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --ff-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Spacing & Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: hsl(210, 20%, 98%);
    --bg-secondary: hsl(0, 0%, 100%);
    --bg-tertiary: hsl(210, 15%, 93%);
    --text-primary: hsl(222, 47%, 10%);
    --text-secondary: hsl(222, 20%, 30%);
    --text-muted: hsl(222, 15%, 50%);
    --border-color: rgba(0, 0, 0, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.05);
    --glass-shadow: rgba(0, 0, 0, 0.05);
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--ff-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

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

h1, h2, h3, h4, h5 {
    font-family: var(--ff-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

/* ==========================================================================
   Layout Helpers
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

.grid {
    display: grid;
    gap: 32px;
}

@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.section {
    padding-top: 100px;
    padding-bottom: 100px;
}

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

/* ==========================================================================
   Typography & Typography Utilities
   ========================================================================== */
.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--clr-accent-blue);
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-title.accent-red::after {
    background-color: var(--clr-accent-red);
}

.section-title.accent-orange::after {
    background-color: var(--clr-accent-orange);
}

.section-title.accent-lightblue::after {
    background-color: var(--clr-accent-lightblue);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
    line-height: 1.6;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 4px 30px var(--glass-shadow);
    transition: background-color var(--transition-normal), border var(--transition-normal);
}

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

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

.logo-text {
    font-family: var(--ff-heading);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    display: flex;
    flex-direction: column;
}

.logo-text span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: -4px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--clr-accent-blue);
    transition: width var(--transition-fast);
}

.nav-link.nav-meyton::after {
    background-color: var(--clr-accent-blue);
}
.nav-link.nav-mantis::after {
    background-color: var(--clr-accent-red);
}
.nav-link.nav-hora::after {
    background-color: var(--clr-accent-orange);
}
.nav-link.nav-noptel::after {
    background-color: var(--clr-accent-lightblue);
}

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

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

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

.nav-link.active::after {
    width: 100%;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1100;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    margin-bottom: 6px;
    transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.nav-toggle span:last-child {
    margin-bottom: 0;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: background-color var(--transition-fast), border var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    padding-top: 180px;
    padding-bottom: 120px;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background-image: linear-gradient(to bottom, rgba(12, 17, 29, 0.4), var(--bg-primary)), url('../img/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.hero-content {
    max-width: 750px;
    position: relative;
    z-index: 2;
}

.hero-tag {
    display: inline-block;
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--clr-accent-blue);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    backdrop-filter: blur(4px);
}

.hero-tag.accent-red {
    color: var(--clr-accent-red);
}

.hero-tag.accent-orange {
    color: var(--clr-accent-orange);
}

.hero-tag.accent-lightblue {
    color: var(--clr-accent-lightblue);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.25rem);
    font-weight: 900;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: clamp(1.125rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 650px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-family: var(--ff-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    border: none;
}

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

.btn-primary:hover {
    background-color: hsl(207, 100%, 35%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 110, 220, 0.25);
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-red {
    background-color: var(--clr-accent-red);
    color: var(--clr-white);
}

.btn-red:hover {
    background-color: hsl(0, 100%, 38%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(231, 76, 60, 0.25);
}

.btn-orange {
    background-color: var(--clr-accent-orange);
    color: var(--clr-navy-dark);
}

.btn-orange:hover {
    background-color: hsl(25, 100%, 42%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(230, 126, 34, 0.25);
}

.btn-lightblue {
    background-color: var(--clr-accent-lightblue);
    color: var(--clr-navy-dark);
}

.btn-lightblue:hover {
    background-color: hsl(210, 75%, 67%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(156, 198, 239, 0.25);
}

.btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ==========================================================================
   Cards (Brand & Product Showcase)
   ========================================================================== */
.card {
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--clr-accent-blue);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card.accent-red:hover {
    border-color: var(--clr-accent-red);
}

.card.accent-orange:hover {
    border-color: var(--clr-accent-orange);
}

.card.accent-lightblue:hover {
    border-color: var(--clr-accent-lightblue);
}

.card-img-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
    background-color: var(--bg-tertiary);
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.card-body {
    padding: 32px;
}

.card-tag {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--clr-accent-blue);
    margin-bottom: 12px;
}

.card.accent-red .card-tag {
    color: var(--clr-accent-red);
}

.card.accent-orange .card-tag {
    color: var(--clr-accent-orange);
}

.card.accent-lightblue .card-tag {
    color: var(--clr-accent-lightblue);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* ==========================================================================
   Tabs & Interactive Elements
   ========================================================================== */
.tab-container {
    margin-top: 48px;
}

.tab-headers {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 32px;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
}

.tab-headers::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    background: none;
    border: none;
    padding: 16px 24px;
    font-family: var(--ff-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    white-space: nowrap;
    transition: color var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--clr-accent-blue);
    transition: width var(--transition-fast);
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn.active::after {
    width: 100%;
}

/* Tab Colors (Dynamic depending on current brand context) */
.tab-container.accent-red .tab-btn::after {
    background-color: var(--clr-accent-red);
}

.tab-container.accent-orange .tab-btn::after {
    background-color: var(--clr-accent-orange);
}

.tab-container.accent-lightblue .tab-btn::after {
    background-color: var(--clr-accent-lightblue);
}

.tab-panel {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Product Detail Columns
   ========================================================================== */
.product-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
}

@media (min-width: 992px) {
    .product-showcase {
        grid-template-columns: 1fr 1fr;
    }
    .product-showcase.reverse .product-details-img {
        order: 2;
    }
}

.product-details-img {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
}

.product-details-content .brand-badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    margin-bottom: 20px;
    background-color: rgba(255,255,255,0.05);
}

.product-details-content h3 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.product-details-content .lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.product-details-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.spec-list {
    list-style: none;
    margin-top: 24px;
    margin-bottom: 32px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.spec-item svg {
    color: var(--clr-accent-blue);
    flex-shrink: 0;
}

.spec-item.accent-red svg {
    color: var(--clr-accent-red);
}

.spec-item.accent-orange svg {
    color: var(--clr-accent-orange);
}

.spec-item.accent-lightblue svg {
    color: var(--clr-accent-lightblue);
}

/* ==========================================================================
   Company Info & Map Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
}

@media (min-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.about-details {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 32px;
}

.about-table tr {
    border-bottom: 1px solid var(--border-color);
}

.about-table td {
    padding: 16px 8px;
    font-size: 0.95rem;
}

.about-table td:first-child {
    font-weight: 600;
    width: 120px;
    color: var(--text-muted);
}

.about-table td:last-child {
    color: var(--text-primary);
}

.map-wrapper {
    width: 100%;
    height: 400px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.map-wrapper iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ==========================================================================
   Form Controls & Contact Section
   ========================================================================== */
.contact-form {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 40px;
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 14px 18px;
    color: var(--text-primary);
    font-family: var(--ff-body);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--clr-accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 110, 220, 0.15);
}

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

@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Modern Validation State styling via CSS classes */
.form-control.is-valid {
    border-color: var(--clr-validation-success);
}
.form-control.is-invalid {
    border-color: var(--clr-validation-error);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--clr-navy-dark);
    border-top: 1px solid var(--border-color);
    padding-top: 80px;
    padding-bottom: 40px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-brand p {
    margin-top: 16px;
    color: var(--text-muted);
    max-width: 300px;
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-muted);
}

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

.footer-bottom {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
    gap: 20px;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
    }
}

.copyright {
    color: var(--text-muted);
}

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

.footer-meta a {
    color: var(--text-muted);
}

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

/* ==========================================================================
   Noptel Support specific components
   ========================================================================== */
.support-alert {
    background-color: rgba(156, 198, 239, 0.05);
    border: 1px dashed var(--clr-accent-lightblue);
    border-radius: var(--border-radius-md);
    padding: 32px;
    margin-bottom: 48px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.support-alert-icon {
    color: var(--clr-accent-lightblue);
    flex-shrink: 0;
}

.support-alert-content h4 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.support-alert-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.step-card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius-md);
    padding: 32px;
    position: relative;
    border: 1px solid var(--border-color);
}

.step-number {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--ff-heading);
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

/* ==========================================================================
   Responsive & Transitions Overrides
   ========================================================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        right: 0;
        left: auto;
        width: max-content;
        min-width: 220px;
        height: auto;
        background-color: var(--bg-primary);
        flex-direction: column;
        padding: 32px 24px;
        align-items: flex-end;
        gap: 20px;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        z-index: 999;
        border-left: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        border-bottom-left-radius: 16px;
        box-shadow: -5px 5px 25px rgba(0,0,0,0.25);
    }
    
    .nav-menu.open {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-toggle.open span:first-child {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.open span:last-child {
        transform: translateY(-8px) rotate(-45deg);
    }
}