/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Color Palette - Monochromatic */
    --color-black: #000000;
    --color-dark-grey: #1a1a1a;
    --color-mid-grey: #4a4a4a;
    --color-light-grey: #f4f4f4;
    --color-white: #ffffff;
    
    /* Accents */
    --color-accent: #333333;

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Spacing */
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 1px;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 5rem);
    margin-bottom: var(--spacing-sm);
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 4px;
    background-color: var(--color-black);
}

.dark-bg h2::after {
    background-color: var(--color-white);
}

.text-center h2::after {
    left: 50%;
    transform: translateX(-50%);
}

h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-mid-grey);
}

.dark-bg p {
    color: #cccccc;
}

.large-text {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.8;
}

/* ==========================================================================
   Layout & Utilities
   ========================================================================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

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

.dark-bg {
    background-color: var(--color-black);
    color: var(--color-white);
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.grid-3-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

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

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

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--color-black);
    cursor: pointer;
    transition: all var(--transition-medium);
}

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

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

/* ==========================================================================
   Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    color: var(--color-white);
    transition: padding var(--transition-fast);
}

.navbar.scrolled {
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
    width: 90%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 100px;
    width: auto;
    border-radius: 4px;
}

.nav-links {
    display: none;
}

.nav-links a {
    margin-left: 2rem;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-white);
    transition: width var(--transition-fast);
}

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

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-white);
    position: absolute;
    left: 0;
    transition: all var(--transition-fast);
}

.mobile-menu-btn span:nth-child(1) { top: 0; }
.mobile-menu-btn span:nth-child(2) { top: 9px; }
.mobile-menu-btn span:nth-child(3) { top: 18px; }

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg);
    top: 9px;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Nav Overlay */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-black);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 999;
    transform: translateY(-100%);
    transition: transform var(--transition-medium);
}

.mobile-nav.active {
    transform: translateY(0);
}

.mobile-nav a {
    color: var(--color-white);
    font-size: 2rem;
    font-weight: 800;
    text-transform: uppercase;
    margin: 1.5rem 0;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
}

.mobile-nav.active a {
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav.active a:nth-child(1) { transition-delay: 0.1s; }
.mobile-nav.active a:nth-child(2) { transition-delay: 0.2s; }
.mobile-nav.active a:nth-child(3) { transition-delay: 0.3s; }
.mobile-nav.active a:nth-child(4) { transition-delay: 0.4s; }


/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    color: var(--color-white);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4) contrast(1.2);
    transform: scale(1.05);
    animation: slowZoom 20s infinite alternate linear;
}

@keyframes slowZoom {
    0% { transform: scale(1.05); }
    100% { transform: scale(1.15); }
}

.hero-content {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 80px; /* Offset for navbar */
}

.subtitle {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    color: #e0e0e0;
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about .highlight {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-black);
    margin-top: 2rem;
    padding-left: 1rem;
    border-left: 4px solid var(--color-black);
}

.feature-list li {
    margin-bottom: 2rem;
}

.feature-list strong {
    display: block;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--color-black);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.section-header {
    margin-bottom: var(--spacing-lg);
}

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

.service-block:last-child {
    margin-bottom: 0;
}

.service-image {
    overflow: hidden;
    position: relative;
}

.service-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-slow), transform var(--transition-slow);
}

.service-image:hover img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.service-image::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    box-shadow: inset 0 0 50px rgba(0,0,0,0.5);
    pointer-events: none;
}

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

.service-details li {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 1.5rem;
}

.service-details li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.service-details strong {
    font-size: 1.1rem;
    color: var(--color-white);
    display: block;
    margin-bottom: 0.5rem;
}

.sub-service {
    background-color: var(--color-dark-grey);
    padding: 2rem;
    border: 1px solid var(--color-accent);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.sub-service:hover {
    transform: translateY(-5px);
    border-color: var(--color-white);
}

.sub-service strong {
    display: block;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

/* Reverse layout for alternating items */
@media (min-width: 768px) {
    .reverse {
        direction: rtl;
    }
    .reverse > * {
        direction: ltr;
    }
}

/* ==========================================================================
   Training Section
   ========================================================================== */
.training {
    background-color: var(--color-light-grey);
}

.training-content {
    max-width: 800px;
    margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    padding: var(--spacing-lg) 0 2rem;
}

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

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

.footer-logo {
    height: 180px;
    width: auto;
    margin-bottom: 1rem;
    border-radius: 6px;
}

.footer-brand h2 {
    margin-bottom: 0.5rem;
}

.footer-brand h2::after {
    display: none;
}

.footer-contact h3 {
    margin-bottom: 1rem;
}

.email-link {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-white);
    position: relative;
    margin-top: 1rem;
}

.email-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-medium);
}

.email-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-accent);
}

.footer-bottom p {
    margin: 0;
    font-size: 0.9rem;
}

/* ==========================================================================
   Animations & Reveals
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay {
    transition-delay: 0.2s;
}