/* ========================================
   907Video - Professional CSS
   ======================================== */

/* CSS Variables / Custom Properties */
:root {
    /* Colors */
    --color-primary: #1e3a5f;
    --color-primary-dark: #0d2137;
    --color-secondary: #e63946;
    --color-secondary-dark: #c1121f;
    --color-accent: #4895ef;
    --color-dark: #1d3557;
    --color-light: #f8f9fa;
    --color-gray: #6c757d;
    --color-gray-light: #e9ecef;
    --color-white: #ffffff;
    --color-text: #212529;
    --color-text-light: #495057;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* 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;

    /* Sizing */
    --container-max: 1200px;
    --header-height: 150px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    /* 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);

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

/* ========================================
   Base / Reset
   ======================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ========================================
   Accessibility
   ======================================== */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

.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;
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ========================================
   Layout
   ======================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    gap: var(--spacing-xl);
}

.logo img {
    height: 140px;
    width: auto;
}

.menu-toggle {
    display: none;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-xl);
}

.nav-links a {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.header-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: background var(--transition-fast);
}

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

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

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-dark) 100%);
    color: var(--color-white);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-lg);
    color: var(--color-accent);
}

.hero-description {
    font-size: 1.125rem;
    margin: 0 0 var(--spacing-xl);
    opacity: 0.9;
}

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

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* ========================================
   Sections
   ======================================== */

section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Intro Section
   ======================================== */

.intro {
    background: var(--color-light);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.intro-content h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-lg);
}

.intro-content p {
    margin: 0 0 var(--spacing-xl);
    color: var(--color-text-light);
}

.intro-features {
    display: grid;
    gap: var(--spacing-md);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.feature-icon {
    font-size: 1.5rem;
}

.feature-text {
    font-weight: var(--font-weight-medium);
}

/* ========================================
   Services Section
   ======================================== */

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-md);
}

.service-card p {
    color: var(--color-text-light);
    margin: 0 0 var(--spacing-lg);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary);
}

/* ========================================
   Why Us Section
   ======================================== */

.why-us {
    background: var(--color-light);
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.why-us-content .section-header {
    text-align: left;
}

.benefits-list {
    margin-bottom: var(--spacing-xl);
}

.benefit {
    margin-bottom: var(--spacing-xl);
}

.benefit h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-sm);
}

.benefit p {
    color: var(--color-text-light);
    margin: 0;
}

.why-us-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   Stats Section
   ======================================== */

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

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

.stat-number {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.stat-label {
    display: block;
    font-size: 1rem;
    opacity: 0.9;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    color: var(--color-white);
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin: 0 0 var(--spacing-lg);
}

.cta-content p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    opacity: 0.95;
}

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

.site-footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    width: 150px;
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    opacity: 0.8;
    margin: 0;
}

.footer-links h3,
.footer-contact h3,
.footer-service-areas h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-lg);
}

.footer-links ul,
.footer-service-areas ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a,
.footer-contact a {
    color: var(--color-white);
    opacity: 0.8;
}

.footer-links a:hover,
.footer-contact a:hover {
    opacity: 1;
}

.footer-contact address {
    font-style: normal;
}

.footer-contact p {
    margin: 0 0 var(--spacing-md);
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
    text-align: center;
    opacity: 0.7;
}

.footer-bottom p {
    margin: 0;
}

/* ========================================
   Mobile Responsive
   ======================================== */

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        padding: var(--spacing-sm);
    }

    .hamburger {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--color-text);
        position: relative;
    }

    .hamburger::before,
    .hamburger::after {
        content: '';
        position: absolute;
        width: 25px;
        height: 3px;
        background: var(--color-text);
        left: 0;
    }

    .hamburger::before {
        top: -8px;
    }

    .hamburger::after {
        bottom: -8px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-md);
    }

    .nav-links.active {
        display: flex;
    }

    .header-cta {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
    }

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

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

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

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

/* ========================================
   Industry Standards Section
   ======================================== */

.industry-standards {
    background: var(--color-light);
    padding: var(--spacing-3xl) 0;
}

.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.standard-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-secondary);
}

.standard-card h3 {
    font-size: 1.25rem;
    margin: 0 0 var(--spacing-md);
    color: var(--color-primary);
}

.standard-card p {
    margin: 0;
    color: var(--color-text-light);
}

.external-link {
    color: var(--color-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: var(--font-weight-medium);
}

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

.external-link svg {
    flex-shrink: 0;
}

/* ========================================
   Technology Section
   ======================================== */

.technology {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
}

.tech-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

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

.tech-content h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin: 0 0 var(--spacing-lg);
    color: var(--color-primary);
}

.tech-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl);
}

.tech-features li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-light);
}

.tech-features li:last-child {
    border-bottom: none;
}

.tech-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

/* ========================================
   Industries Section
   ======================================== */

.industries {
    background: var(--color-light);
    padding: var(--spacing-3xl) 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.industry-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.industry-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.industry-card h3 {
    font-size: 1.125rem;
    margin: 0 0 var(--spacing-sm);
    color: var(--color-primary);
}

.industry-card p {
    margin: 0;
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .site-header,
    .hero-cta,
    .cta {
        display: none;
    }

    body {
        font-size: 12pt;
    }
}