/* ========================================
   CDG Interactive - Modern Premium Styles
   ======================================== */

/* CSS Variables for consistent theming */
:root {
    /* Colors */
    --color-primary: #00d4ff;
    --color-primary-dark: #00a8cc;
    --color-secondary: #1a1f36;
    --color-dark: #0f1419;
    --color-darker: #0a0d12;
    --color-light: #ffffff;
    --color-gray: #8892a6;
    --color-gray-light: #e8ecf4;
    --color-accent: #00ffcc;
    

/* Brand Colors - Warm Earthy Palette */
    --color-primary: #B8956A;          /* Warm taupe */
    --color-primary-dark: #9A7A54;     /* Deeper taupe */
    --color-primary-light: #C9A67B;    /* Light taupe */
    --color-accent: #D4A574;           /* Warm gold */
    --color-accent-light: #E8C4A0;     /* Light cream gold */



    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.3);
--shadow-glow: 0 0 40px rgba(184, 149, 106, 0.4);
    
    /* Transitions */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-light);
    background-color: var(--color-darker);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

/* ========================================
   Utility Classes
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.938rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base),
                background-color var(--transition-base);
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-dark);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
}

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

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

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1rem;
}

.btn-small {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
}

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

.section-title {
    color: var(--color-light);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    max-width: 600px;
    margin: 0 auto;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 13, 18, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background-color var(--transition-base), 
                box-shadow var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 13, 18, 0.95);
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem var(--spacing-md);
}

.nav-brand {
    display: flex;
    flex-direction: column;
}

.brand-main {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-light);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-sub {
    font-size: 0.75rem;
    color: var(--color-gray);
    letter-spacing: 0.5px;
}

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

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

.nav-link {
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--color-gray);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    width: 28px;
    height: 3px;
    background: var(--color-light);
    transition: transform var(--transition-base), opacity var(--transition-base);
    border-radius: 2px;
}

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

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

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

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(10, 13, 18, 0.92) 0%, 
        rgba(26, 31, 54, 0.85) 50%,
        rgba(0, 212, 255, 0.15) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.hero-badge {
    display: inline-block;
    padding: 0.625rem 1.5rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    max-width: 900px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-light);
}

.hero-description {
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.125rem;
    color: var(--color-gray);
    line-height: 1.8;
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 36px;
    border: 2px solid var(--color-primary);
    border-radius: 20px;
    position: relative;
}

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

@keyframes scroll-down {
    0%, 100% {
        opacity: 0;
        top: 8px;
    }
    50% {
        opacity: 1;
        top: 16px;
    }
}

/* ========================================
   Introduction Section
   ======================================== */

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

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

.intro-content h2 {
    margin-bottom: var(--spacing-md);
}

.intro-text {
    font-size: 1.063rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

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

.stat-card {
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.05) 0%, 
        rgba(0, 255, 204, 0.05) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: transform var(--transition-base), 
                border-color var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

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

.service-card {
    position: relative;
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg) var(--spacing-md);
    transition: transform var(--transition-base), 
                border-color var(--transition-base),
                box-shadow var(--transition-base);
    overflow: hidden;
    cursor: pointer;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-lg);
}

.service-hover-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity var(--transition-slow);
    z-index: 0;
}

.service-card:hover .service-hover-bg {
    opacity: 0.08;
}

.service-icon {
    position: relative;
    z-index: 1;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.1) 0%, 
        rgba(0, 255, 204, 0.1) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    transition: transform var(--transition-base), 
                background var(--transition-base);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.2) 0%, 
        rgba(0, 255, 204, 0.2) 100%);
}

.service-title {
    position: relative;
    z-index: 1;
    color: var(--color-light);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    position: relative;
    z-index: 1;
    font-size: 0.938rem;
    line-height: 1.7;
}

/* ========================================
   Why We're Different Section
   ======================================== */

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

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

.why-intro {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

.why-points {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.why-point {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(0, 212, 255, 0.03);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-sm);
    transition: transform var(--transition-base), 
                background var(--transition-base);
}

.why-point:hover {
    transform: translateX(8px);
    background: rgba(0, 212, 255, 0.08);
}

.why-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
}

.why-point h4 {
    color: var(--color-light);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.why-point p {
    font-size: 0.938rem;
    margin: 0;
}

.why-visual {
    position: relative;
}

.why-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   Capabilities Section
   ======================================== */

.capabilities {
    background: var(--color-darker);
}

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

.capabilities-intro {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-light);
    margin-bottom: var(--spacing-md);
}

.capabilities-content p {
    margin-bottom: var(--spacing-md);
}

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

.capability-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition: transform var(--transition-base), 
                border-color var(--transition-base),
                box-shadow var(--transition-base);
}

.capability-item:hover {
    transform: translateX(12px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-md);
}

.capability-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.1) 0%, 
        rgba(0, 255, 204, 0.1) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.capability-item h4 {
    color: var(--color-light);
    font-size: 1.125rem;
    margin: 0;
}

/* ========================================
   Contact Section
   ======================================== */

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

.contact-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.contact-intro {
    max-width: 700px;
    margin: 0 auto var(--spacing-sm);
    font-size: 1.063rem;
}

.contact-tagline {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.contact-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

.contact-form {
    background: var(--color-darker);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-light);
    font-weight: 500;
    font-size: 0.938rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: var(--color-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--color-light);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-base), 
                background var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(0, 212, 255, 0.05);
}

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

.error-message {
    display: block;
    margin-top: 0.5rem;
    color: #ff4444;
    font-size: 0.875rem;
}

.math-field {
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
}

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

.form-message.success {
    display: block;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    color: #00ff88;
}

.form-message.error {
    display: block;
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.3);
    color: #ff4444;
}

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

.footer {
    background: var(--color-darker);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--color-light);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    color: var(--color-primary) !important;
    font-weight: 500;
}

.footer-nav h4,
.footer-contact h4 {
    color: var(--color-light);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-nav a {
    color: var(--color-gray);
    font-size: 0.938rem;
    transition: color var(--transition-base);
}

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

.footer-contact p {
    margin-bottom: var(--spacing-sm);
    font-size: 0.938rem;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin: 0;
}

/* ========================================
   Back to Top Button
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-dark);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity var(--transition-base), 
                visibility var(--transition-base),
                transform var(--transition-base),
                background var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent);
    transform: translateY(-4px);
}

/* ========================================
   Animation Classes
   ======================================== */

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reveal animations (triggered by JS) */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 0;
    transition: opacity var(--transition-slow), 
                transform var(--transition-slow);
}

.reveal-up {
    transform: translateY(40px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
    opacity: 1;
    transform: translate(0, 0);
}

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

@media (max-width: 968px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-dark);
        flex-direction: column;
        justify-content: center;
        padding: var(--spacing-lg);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .nav-link {
        font-size: 1.125rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Grid layouts */
    .intro-grid,
    .why-grid,
    .capabilities-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-large {
        width: 100%;
    }
}

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

@media print {
    .header,
    .nav-toggle,
    .back-to-top,
    .scroll-indicator,
    .hero-buttons {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}