/* 
   C-Portals | Premium Construction Theme 
   Variables & Reset 
*/

:root {
    /* Colors - Sky Blue & Dark Theme */
    --primary-blue: #0EA5E9;
    /* Sky Blue - Modern & Trustworthy */
    --primary-accent: #38BDF8;
    /* Lighter Sky Blue */
    --dark-bg: #0F172A;
    /* Deep Slate Blue/Black */
    --dark-surface: #1E293B;
    /* Slightly lighter surface */
    --accent-gray: #334155;
    /* UI Borders/Lines */
    --text-white: #F8FAFC;
    /* Off-white for headings */
    --text-body: #94A3B8;
    /* Muted blue-gray for body text */
    --white: #FFFFFF;

    /* Spacing */
    --section-padding: clamp(60px, 8vw, 120px) 5%;
    /* Responsive Padding */
    --container-width: 1440px;

    /* Typography */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --transition-page: opacity 0.4s ease-in-out;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--dark-bg);
    color: var(--text-white);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    opacity: 0;
    /* Init hidden for fade-in */
    transition: var(--transition-page);
}

body.fade-in {
    opacity: 1;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    opacity: 0;
    /* Init hidden for lazy load fade */
    transition: opacity 0.6s ease-out;
}

img.loaded {
    opacity: 1;
}

/* Typography Utility Classes */
.heading-xl {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 5rem);
    /* Responsive typography */
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1.1;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.heading-lg {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.heading-md {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--white);
}

.text-lead {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--text-body);
    max-width: 600px;
    margin-bottom: 2rem;
    font-weight: 300;
}

.text-highlight {
    color: var(--primary-blue);
}

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

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

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

/* Grid System */
.grid,
.grid-2,
.grid-3,
.grid-4 {
    display: grid;
    gap: 2rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.flex {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    /* Ensure flex items wrap on mobile */
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    /* responsive flex */
}

/* Components */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border: none;
    z-index: 1;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transform: skewX(-20deg);
    transition: var(--transition-smooth);
    z-index: -1;
}

.btn-primary:hover::before {
    left: 100%;
    transition: 0.7s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 5%;
    transition: var(--transition-smooth);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    /* #0F172A with opacity */
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    border-bottom: 1px solid var(--accent-gray);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.mobile-only {
    display: none;
}

.desktop-only {
    display: inline-flex;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1001;
    /* Ensure logo is above mobile menu */
}

/* Logo Styles Updated for Image */
.logo img {
    display: block;
    /* Ensure no extra space below img */
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    color: var(--text-white);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1002;
}

.bar {
    width: 30px;
    height: 2px;
    background-color: var(--white);
    transition: var(--transition-smooth);
}

.menu-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}


/* Hero Section */
.hero {
    min-height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 100px 5% 50px;
    /* Top padding to account for fixed navbar */
}

.hero-content {
    width: 100%;
    max-width: 600px;
    z-index: 2;
    position: relative;
}

.hero-canvas {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
}

/* Trust Metrics */
.stats-section {
    background: var(--dark-surface);
    border-top: 1px solid var(--accent-gray);
    border-bottom: 1px solid var(--accent-gray);
    padding: 4rem 5%;
}

.stat-item {
    text-align: center;
    padding: 1rem;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
    color: var(--text-body);
}

/* Cards (Services) */
.card {
    background: var(--dark-surface);
    padding: 2.5rem 2rem;
    border: 1px solid var(--accent-gray);
    border-radius: 8px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    height: 100%;
    /* Ensure equal height in grid */
    /* GSAP Handling: init hidden handles by JS */
    opacity: 0;
    transform: translateY(30px);
}

.card:hover {
    transform: translateY(-8px) !important;
    /* Override GSAP inline styles on hover */
    border-color: var(--primary-blue);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.card h3 {
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-body);
    font-size: 0.95rem;
}

/* Feature/Project Cards */
.project-card {
    position: relative;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: var(--dark-surface);
    opacity: 0;
    /* GSAP Init Hidden */
    transform: translateY(30px);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.project-card:hover .project-img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent);
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition-smooth);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
}

/* Footer */
footer {
    background: var(--dark-bg);
    border-top: 1px solid var(--accent-gray);
    padding: 5rem 5% 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-size: 1.1rem;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: var(--text-body);
    transition: var(--transition-smooth);
    font-size: 0.9rem;
}

.footer-col ul li a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--accent-gray);
    color: var(--text-body);
    font-size: 0.85rem;
}

/* =========================================
   Responsive Media Queries
   ========================================= */

/* Tablet & Smaller Desktop */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

    .hero {
        flex-direction: column-reverse;
        /* Text bottom, Canvas Top for mobile */
        justify-content: center;
        text-align: center;
        padding-top: 120px;
    }

    .hero-content {
        margin: 2rem auto 0;
        padding: 0 1rem;
    }

    .hero-canvas {
        position: relative;
        width: 100%;
        height: 50vh;
        /* Give canvas space */
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .mobile-only {
        display: block;
    }

    .desktop-only {
        display: none;
    }
}

/* Mobile Devices */
@media (max-width: 768px) {

    /* Navbar Mobile */
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 100%;
        /* Full width for immersive feel */
        background: var(--dark-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition-smooth);
        z-index: 1000;
        gap: 2rem;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-link {
        font-size: 1.2rem;
        display: block;
        padding: 1rem;
    }

    /* Layouts Collapse */
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
        /* Force single column */
    }

    .flex-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .flex-between .btn {
        width: 100%;
        /* Full width buttons on mobile */
    }

    /* Stats Stack vertically */
    .stat-item {
        border-bottom: 1px solid var(--accent-gray);
        padding: 2rem 0;
    }

    .stat-item:last-child {
        border-bottom: none;
    }

    /* Hero Adjustments */
    .hero-canvas {
        height: 40vh;
    }

    /* Pages */
    .about-content,
    .contact-container {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}