/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700&family=Playfair+Display:ital,wght@0,400;0,600;1,400&display=swap');

:root {
    --primary-color: #1a2b4b; /* Slightly lighter Navy for better readability */
    --brand-dark: #0F172A; /* Darkest Navy from Logo text usually */
    --secondary-color: #008C45; /* AST Green - Growth & Prosperity */
    --accent-color: #CD212A; /* AST Red - Energy & Vitality */
    --text-color: #334155;
    --text-dark: #1e293b; /* Darker text for better contrast */
    --bg-light: #F8FAFC;
    --white: #FFFFFF;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    color: var(--brand-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(255,255,255,0.8);
}

h1 {
    font-family: 'Playfair Display', serif; /* Serif for main titles for elegance */
    font-size: 4.5rem;
    text-shadow: 0 4px 15px rgba(255,255,255,0.9); /* Stronger glow for main title */
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

p {
    margin-bottom: 1.5rem;
    font-weight: 500; /* Increased weight slightly for better contrast */
    text-shadow: 0 1px 5px rgba(255,255,255,0.8); /* Subtle shadow for text */
}

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

ul {
    list-style: none;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 15px; /* Space between logo and text */
    text-decoration: none;
}

.logo-container img {
    height: 65px; /* Slightly reduced to balance with text */
    width: auto;
    filter: brightness(0.9);
}

/* Single line full brand name */
.brand-full {
    font-family: 'Playfair Display', serif;
    font-size: 1.35rem; /* Slightly larger */
    font-weight: 700;
    
    /* Gradient Text for Premium Look */
    background: linear-gradient(135deg, var(--brand-dark) 0%, #2c3e50 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: var(--brand-dark); /* Fallback */
    
    letter-spacing: 0.02em; /* Elegant spacing */
    white-space: nowrap;
    
    /* Subtle text shadow for depth (engraved look) - Note: Text shadow doesn't work well with text-fill-color transparent in some browsers, so we use filter drop-shadow instead if needed, but here simple spacing and gradient is often classier. Let's try a subtle filter drop-shadow instead of text-shadow */
    filter: drop-shadow(0 1px 0 rgba(255,255,255,0.5));
}

nav ul {
    display: flex;
    gap: 3rem;
    align-items: center;
}

nav a {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    color: var(--primary-color);
    padding: 10px 22px; /* Increased padding for the pill shape */
    border-radius: 50px;
    transition: all 0.3s ease;
    isolation: isolate; /* Create new stacking context */
}

/* Glassmorphism Background Layer */
nav a::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: 50px;
    
    /* Glass Effect Core */
    background: linear-gradient(
        135deg, 
        rgba(255, 255, 255, 0.4), 
        rgba(255, 255, 255, 0.1)
    );
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8); /* High-light border */
    box-shadow: 
        0 4px 15px rgba(0, 0, 0, 0.05), /* Soft drop shadow */
        inset 0 0 15px rgba(255, 255, 255, 0.3); /* Inner glow */
        
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); /* Bouncy spring effect */
}

/* Remove old underline */
nav a::after {
    display: none;
}

nav a:hover {
    color: var(--secondary-color);
    transform: translateY(-2px);
    text-shadow: 0 1px 1px rgba(255,255,255,0.8);
}

nav a:hover::before {
    opacity: 1;
    transform: scale(1);
    /* Enhance shadow on hover */
    box-shadow: 
        0 8px 25px rgba(0, 140, 69, 0.1), /* Hint of brand color in shadow */
        inset 0 0 20px rgba(255, 255, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.9);
}

/* Language Switcher */
.lang-switch {
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 4px;
    transition: var(--transition);
}

.lang-current:hover {
    border-color: var(--primary-color);
}

.lang-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background: var(--white);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.05);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    min-width: 140px;
}

.lang-switch:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-color);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.lang-dropdown a:hover {
    background-color: var(--bg-light);
    color: var(--secondary-color);
}

/* Hero Section Base */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 5%;
    position: relative;
    overflow: hidden;
    background-color: var(--bg-light);
    /* Prepare for background images */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Specific Page Backgrounds */
/* Home Page Hero - City Skyline */
#home {
    background-image: linear-gradient(rgba(255,255,255,0.75), rgba(255,255,255,0.6)), url('https://picsum.photos/id/122/1920/1080'); /* City skyline */
    background-attachment: fixed;
    background-position: center bottom;
    background-size: cover;
    background-repeat: no-repeat;
}

/* About Section/Page - Architecture */
.about {
    background-image: linear-gradient(rgba(255,255,255,0.85), rgba(255,255,255,0.85)), url('https://picsum.photos/id/48/1920/1080'); /* Architecture structure */
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

/* Services Section/Page - Technology/Work */
.services {
    background-image: linear-gradient(rgba(255,255,255,0.85), rgba(255,255,255,0.85)), url('https://picsum.photos/id/3/1920/1080'); /* Technology/Data concept */
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

/* Contact Page - Connection */
.contact-page {
    background-image: linear-gradient(rgba(255,255,255,0.8), rgba(255,255,255,0.8)), url('https://picsum.photos/id/60/1920/1080'); /* Office/Desk context */
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

/* Abstract shapes for background (Keep as overlay or fallback) */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(0,140,69,0.03) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(205,33,42,0.03) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    max-width: 900px;
    z-index: 1;
    position: relative;
}

.hero h1 {
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.hero h1 span {
    display: block;
    color: var(--secondary-color); /* Highlight with brand color */
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 600px;
    margin-bottom: 3rem;
    opacity: 0.8;
}

.btn {
    display: inline-block;
    padding: 1rem 3.5rem;
    background-color: var(--secondary-color); /* Green by default */
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    border: none;
    border-radius: 4px; /* Slight radius */
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 140, 69, 0.3); /* Green shadow */
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: var(--brand-dark); /* Dark Navy on hover */
    z-index: -1;
    transition: var(--transition);
}

.btn:hover {
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.4); /* Dark shadow on hover */
    transform: translateY(-2px);
}

.btn:hover::before {
    width: 100%;
}

/* About Section - Minimalist Split */
.about {
    padding: 10rem 5%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.about-text h2 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    margin-bottom: 2rem;
}

.about-text p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    border-left: 1px solid rgba(0,0,0,0.1);
    padding-left: 3rem;
}

.stat-item h3 {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-weight: 300; /* Thinner font for numbers */
}

.stat-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-color);
    font-weight: 600;
}

/* Services - Cards with plenty of whitespace */
.services {
    padding: 10rem 5%;
    background-color: var(--white);
}

.section-header {
    margin-bottom: 6rem;
    max-width: 600px;
}

.section-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color); /* Red line */
    margin: 15px auto 0;
    border-radius: 2px;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
}

.service-icon {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    display: block;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    color: var(--accent-color);
}

.service-card {
    padding: 3rem 2rem;
    border-top: 1px solid rgba(0,0,0,0.1);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.service-card:hover {
    border-top-color: var(--accent-color);
    transform: translateY(-10px);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-card p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
}

/* Footer - Dark and Clean */
footer {
    background-color: var(--brand-dark);
    color: var(--white);
    padding: 6rem 5% 2rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-color) 0%, var(--accent-color) 100%); /* Green to Red Gradient */
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 6rem;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 2rem;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.6);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-col ul li:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-col ul li i {
    margin-right: 10px;
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    opacity: 0.5;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
    h1 { font-size: 3rem; }
    .about { grid-template-columns: 1fr; gap: 4rem; }
    .about-stats { border-left: none; padding-left: 0; grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr; }
    
    /* Optimized mobile navigation layout */
    header {
        padding: 1rem 5%;
        justify-content: space-between; /* Ensure space between logo and menu */
    }

    .logo-container {
        flex-shrink: 0; /* Prevent logo shrinking */
        max-width: 80%; /* Allow space for hamburger */
    }

    .logo-container img {
        height: 45px; /* Smaller logo for mobile */
    }

    /* Hide text on very small screens, or adjust if space permits */
    .brand-full {
        display: none; 
    }

    /* Hamburger Menu Logic (Simplified for now, assuming JS toggles a class) */
    .mobile-menu-btn {
        display: block !important; /* Force show */
        font-size: 1.5rem;
        color: var(--primary-color);
        cursor: pointer;
        z-index: 1001;
    }

    nav {
        display: none; /* Hidden by default */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        flex-direction: column;
    }

    nav.active {
        display: flex;
    }

    nav ul {
        flex-direction: column;
        gap: 1.5rem;
        align-items: flex-start;
        width: 100%;
    }
    
    nav a {
        display: block;
        width: 100%;
        padding: 10px 0;
    }
    
    /* Move lang switch to bottom of mobile menu or keep in flow */
    .lang-switch {
        margin-top: 1rem;
        width: 100%;
        padding-top: 1rem;
        border-top: 1px solid rgba(0,0,0,0.05);
    }
    
    .lang-dropdown {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: 1rem;
        display: none; /* Hidden until clicked */
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    /* Simple JS toggle for lang dropdown in mobile would be needed, 
       or just show them all. For simplicity here: */
    .lang-switch:hover .lang-dropdown {
        display: block;
    }
}