/* ==========================================================================
   TIL - Test & Integration Lab
   Styles inspired by Epoch Concepts design language
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Colors - Navy & Cyan theme */
    --color-primary: #041d3d;
    --color-primary-light: #0a2d5c;
    --color-secondary: #05c2cd;
    --color-secondary-dark: #04a8b2;
    --color-accent: #a594ea;
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Typography */
    --font-heading: 'Ubuntu', sans-serif;
    --font-body: 'Karla', sans-serif;

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

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

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

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

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

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

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

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

ul, ol {
    list-style: none;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    transition: box-shadow var(--transition-base);
}

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

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.logo-til {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: -0.02em;
}

.logo-text {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--color-gray-500);
    display: none;
}

@media (min-width: 768px) {
    .logo-text {
        display: block;
    }
}

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

.nav-link {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gray-700);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.nav-link-cta {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
}

.nav-link-cta:hover {
    background: var(--color-secondary-dark);
    color: var(--color-white);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition-fast);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-md);
    }

    .nav-link {
        display: block;
        padding: var(--space-sm) 0;
    }

    .nav-link-cta {
        text-align: center;
    }
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-4xl) var(--space-lg);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, #0d3a6e 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2305c2cd' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-300);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

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

.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-gray-400);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.5;
        transform: translateX(-50%) translateY(12px);
    }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
    color: var(--color-white);
}

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

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

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

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

.btn-full {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--color-primary);
}

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

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

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
    background: var(--color-gray-50);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
}

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

.about-content {
    font-size: 1.0625rem;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--color-gray-800);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.about-objectives h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
}

.objectives-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.objectives-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.objective-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
}

.objective-icon svg {
    width: 100%;
    height: 100%;
}

/* --------------------------------------------------------------------------
   Capabilities Section
   -------------------------------------------------------------------------- */
.capabilities {
    background: var(--color-primary);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.capability-card {
    background: var(--color-primary-light);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.capability-icon {
    width: 48px;
    height: 48px;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.capability-icon svg {
    width: 100%;
    height: 100%;
}

.capability-card h3 {
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.capability-card p {
    color: var(--color-gray-300);
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Process Section
   -------------------------------------------------------------------------- */
.process {
    background: var(--color-gray-50);
}

.process-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: var(--space-md);
}

.process-step {
    flex: 1;
    min-width: 150px;
    max-width: 180px;
    text-align: center;
    padding: var(--space-lg);
}

.process-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.process-step h3 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.process-step p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.process-connector {
    display: none;
    width: 40px;
    height: 2px;
    background: var(--color-gray-300);
    margin-top: 60px;
}

@media (min-width: 1024px) {
    .process-connector {
        display: block;
    }
}

/* --------------------------------------------------------------------------
   Locations Section
   -------------------------------------------------------------------------- */
.locations {
    background: var(--color-primary);
}

.locations-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

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

.location-card {
    background: var(--color-primary-light);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.location-primary {
    border: 2px solid var(--color-secondary);
}

.location-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--color-secondary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.location-card h3 {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--space-xs);
}

.location-code {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.location-features {
    text-align: left;
    margin-bottom: var(--space-xl);
}

.location-features li {
    color: var(--color-gray-300);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.location-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-secondary);
    border-radius: 50%;
}

.locations-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.locations-note svg {
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.locations-note p {
    color: var(--color-gray-300);
    font-size: 0.9375rem;
}

/* --------------------------------------------------------------------------
   Team Section
   -------------------------------------------------------------------------- */
.team {
    background: var(--color-gray-50);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.team-card {
    background: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.team-card-highlight {
    border: 2px solid var(--color-secondary);
    background: linear-gradient(to bottom, rgba(5, 194, 205, 0.05), var(--color-white));
}

.team-icon {
    width: 48px;
    height: 48px;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.team-icon svg {
    width: 100%;
    height: 100%;
}

.team-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.team-scope {
    font-size: 0.875rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.team-card ul {
    font-size: 0.9375rem;
}

.team-card li {
    padding: var(--space-xs) 0;
    color: var(--color-gray-600);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.team-card li::before {
    content: '•';
    color: var(--color-secondary);
    font-weight: bold;
}

.team-note {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-200);
    font-size: 0.875rem;
    font-style: italic;
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    background: var(--color-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
    }
}

.contact-info {
    color: var(--color-gray-300);
}

.contact-info h3 {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.contact-info p {
    margin-bottom: var(--space-xl);
}

.contact-process {
    margin-bottom: var(--space-xl);
}

.contact-process h4 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.contact-process ol {
    counter-reset: step;
}

.contact-process li {
    counter-increment: step;
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.contact-process li::before {
    content: counter(step);
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--color-secondary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-details h4 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-md);
}

.contact-form-wrapper {
    background: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--space-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(5, 194, 205, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-gray-900);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

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

.footer-brand .logo-til {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    display: block;
}

.footer-brand p {
    color: var(--color-gray-500);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-column a {
    color: var(--color-gray-400);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}