/* 
 * JFD TECH - Premium Design System
 * Modern, responsive, and performance-optimized.
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&family=Plus+Jakarta+Sans:wght@300;400;600;700&display=swap');

:root {
    /* Color Palette - Premium HSL */
    --primary-h: 210;
    --primary-s: 100%;
    --primary-l: 50%;
    
    --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-dark: hsl(var(--primary-h), var(--primary-s), 40%);
    --primary-light: hsl(var(--primary-h), var(--primary-s), 90%);
    
    --bg-main: #ffffff;
    --bg-secondary: #f8fafc;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    
    --glass: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-premium: 0 20px 50px rgba(0, 119, 194, 0.15);
    
    /* Spacing & Sizes */
    --nav-height: 80px;
    --container-width: 1200px;
    --radius: 16px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Tokens */
[data-theme="dark"] {
    --bg-main: #020617;
    --bg-secondary: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #1e293b;
    --glass: rgba(15, 23, 42, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-premium: 0 20px 50px rgba(0, 0, 0, 0.5);
}

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

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.5s ease;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

ul { list-style: none; }

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

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section { padding: 100px 0; }

.grid {
    display: grid;
    gap: 2rem;
}

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

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bg-secondary { background-color: var(--bg-secondary); }

/* Navigation - Glassmorphism */
nav {
    height: var(--nav-height);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

nav.scrolled {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    height: 70px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 50px;
    transition: var(--transition);
}

nav.scrolled .logo-img { height: 40px; }

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

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links a i { font-size: 0.85rem; }

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

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

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: rotate(15deg);
    border-color: var(--primary);
}

.light-icon { display: none; }
[data-theme="dark"] .light-icon { display: block; }
[data-theme="dark"] .dark-icon { display: none; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff !important;
    box-shadow: 0 10px 20px -5px rgba(0, 119, 194, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(0, 119, 194, 0.5);
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--nav-height);
    background: radial-gradient(circle at 90% 10%, hsla(var(--primary-h), 100%, 50%, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 10% 90%, hsla(var(--primary-h), 100%, 50%, 0.05) 0%, transparent 50%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.hero p {
    font-size: clamp(1.1rem, 3vw, 1.25rem);
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* Cards */
.card {
    background: var(--bg-main);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-premium);
}

.card i {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: block;
}

/* Portfolio Items */
.portfolio-item {
    background: var(--bg-main);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.portfolio-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.portfolio-info { padding: 1.5rem; }

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.team-card {
    background: var(--bg-main);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.team-card:hover { 
    transform: translateY(-10px); 
    box-shadow: var(--shadow-premium); 
    border-color: var(--primary); 
}

.team-img-wrapper { 
    height: 240px; /* Adjusted for circular layout */
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 2rem;
}

.team-img { 
    width: 180px; 
    height: 180px; 
    object-fit: cover; 
    object-position: top;
    border-radius: 50%; /* Perfect circle */
    transition: var(--transition); 
    border: 4px solid var(--bg-secondary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.team-card:hover .team-img { 
    transform: scale(1.05) translateY(-5px); 
    border-color: var(--primary);
    box-shadow: 0 15px 30px rgba(0, 128, 255, 0.2);
}

.team-info { padding: 2rem; }
.team-info h3 { margin-bottom: 0.5rem; color: var(--text-main); }
.team-info p { color: var(--text-muted); margin-bottom: 1.5rem; font-weight: 600; }

.team-social { 
    display: flex; 
    justify-content: center; 
    gap: 1rem; 
}

.team-social a { 
    width: 35px; 
    height: 35px; 
    border-radius: 50%; 
    background: var(--bg-secondary);
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

.team-social a:hover { 
    background: var(--primary); 
    color: white; 
}

/* Official Social Brand Colors on Hover */
.team-social a[aria-label="LinkedIn"]:hover,
.social-links a[aria-label="LinkedIn"]:hover {
    background: #0077b5;
    border-color: #0077b5;
    color: white;
}

.team-social a[aria-label="GitHub"]:hover,
.social-links a[aria-label="GitHub"]:hover {
    background: #333;
    border-color: #333;
    color: white;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    padding: 80px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}

.footer-logo-img {
    height: 40px;
    margin-bottom: 1.5rem;
}

[data-theme="dark"] .footer-logo-img,
[data-theme="dark"] .logo-img {
    filter: brightness(0) invert(1);
}

.footer-logo p {
    color: var(--text-muted);
    max-width: 320px;
}

.footer-links h3, .footer-social h3 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.footer-links li { margin-bottom: 0.75rem; }

.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }

.social-links {
    display: flex;
    gap: 1.25rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-main);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-3px);
}

.social-links a[aria-label="Facebook"]:hover {
    background: #1877f2;
    border-color: #1877f2;
}

.social-links a[aria-label="Instagram"]:hover {
    background: #e4405f;
    border-color: #e4405f;
}

.social-links a[aria-label="WhatsApp"]:hover {
    background: #25d366;
    border-color: #25d366;
}

.footer-bottom {
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.legal-links {
    display: flex;
    gap: 2rem;
}

/* Responsive Grids */
.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); }

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

.nav-toggle {
    display: none;
}

/* Responsive */
@media (max-width: 992px) {
    .hero h1 { font-size: 3.5rem; }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
    }
    
    .section { padding: 40px 0; }
    
    .hero { 
        min-height: auto !important; 
        padding: 100px 0 40px !important; 
    }
    
    .hero h1 { font-size: 2.4rem; }
    .hero p { font-size: 1rem; margin-bottom: 1.5rem; }
    
    .grid-2, .grid-3, .grid-4 { 
        grid-template-columns: 1fr !important; 
        gap: 1.5rem;
    }

    .card { padding: 1.5rem !important; }

    /* Fix flex items that should stack on mobile */
    .flex-mobile-stack {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 1rem !important;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-main);
        flex-direction: column;
        justify-content: center;
        transition: 0.5s ease;
        z-index: 999;
    }
    
    .nav-links.active { right: 0; }
    
    .nav-toggle {
        display: block;
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 1001;
    }
    
    .footer-content { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-bottom { flex-direction: column; gap: 1.5rem; text-align: center; }

    /* Team Grid Tweak */
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .container { padding: 0 1rem; }
    .section { padding: 30px 0; }
}