/* styles.css — complete, theme-aware, animations + responsive */
/* =========================
   Design tokens (light default)
   ========================= */
   :root{
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #7c3aed;
    --accent: #06b6d4;
  
    --bg: #f6f8fb; /* page background */
    --bg-gradient: linear-gradient(135deg,#f5f7fa 0%,#e4e7eb 100%);
    --surface: #ffffff; /* card / surface color */
    --text: #0f172a;
    --muted: #64748b;
    --card-contrast: rgba(0,0,0,0.04);
    --glass: rgba(255,255,255,0.6);
    --shadow: 0 6px 18px rgba(12,18,32,0.08);
    --radius: 16px;
    --transition-fast: 180ms;
    --transition-medium: 300ms;
    --transition: all .28s ease;
}
  
/* dark theme overrides (applied when .dark on <html>) */
:root.dark {
    --primary: #5b7ef9;
    --primary-dark: #8da4ff;
    --bg: #071026;
    --bg-gradient: linear-gradient(180deg,#071026 0%, #071426 55%, #071026 100%);
    --surface: #071226; /* panels */
    --text: #e6eef8;
    --muted: #9fb0c8;
    --card-contrast: rgba(255,255,255,0.02);
    --glass: rgba(10,16,26,0.5);
    --shadow: 0 10px 30px rgba(0,0,0,0.6);
}
  
/* Reset & base */
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
    background: var(--bg-gradient);
    color: var(--text);
    line-height:1.6;
    min-height:100vh;
    transition: background var(--transition-medium) ease, color var(--transition-medium) ease;
    padding-bottom:2rem;
    position: relative; /* Ensure body is a positioning context */
}
  
/* Network Canvas for Interactive Animation - Full Page */
#network-canvas {
    position: fixed; /* Fixed to viewport */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0; /* Behind content, but on top of background */
    pointer-events: none; /* Let clicks pass through to content */
    /* Add a transition for subtle color change when theme toggles */
    transition: background-color var(--transition-medium) ease;
}

/* container */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.5rem}
  
/* Links */
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{text-decoration:underline}

/* Buttons */
.btn{
    display:inline-block;padding:.8em 1.6em;border-radius:999px;font-weight:700;
    background:var(--primary);color:#fff;border:2px solid var(--primary);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.btn:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(37,99,235,.16)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;}
  
/* Header / Nav */
header{
    position:sticky;top:0;
    z-index: 100; /* High z-index to stay on top of canvas and content */
    background: linear-gradient(180deg, rgba(255,255,255,0.65), rgba(255,255,255,0.6));
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 18px rgba(2,6,23,0.06);
    transition: background var(--transition-medium);
}
:root.dark header{
    background: linear-gradient(180deg, rgba(8,12,20,0.9), rgba(8,12,20,0.85));
    box-shadow: var(--shadow);
}
.navbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 0}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.2rem;color:var(--primary); transition: var(--transition);}
.logo i{color:var(--primary)}
.nav-links{display:flex;gap:1.6rem;list-style:none;align-items:center}
.nav-links a{color:var(--muted);font-weight:700;padding:.4rem 0;position:relative}
.nav-links a.active, .nav-links a:hover{color:var(--text)}
.nav-links a::after{content:'';position:absolute;left:0;bottom:-8px;width:0;height:3px;background:var(--primary);border-radius:6px;transition:width .28s}
.nav-links a.active::after, .nav-links a:hover::after{width:100%}
  
/* mobile toggle */
.mobile-toggle{display:none;background:transparent;border:0;font-size:1.2rem;color:var(--muted);cursor:pointer}
  
/* language buttons */
.lang-switch{display:flex;gap:.5rem;align-items:center}
.lang-btn{background:transparent;border:1px solid transparent;padding:.35rem .6rem;border-radius:8px;cursor:pointer;font-weight:700;color:var(--muted);transition:var(--transition)}
.lang-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
  
/* theme toggle */
.theme-toggle{background:transparent;border:0;padding:.35rem;margin-left:.5rem;border-radius:8px;cursor:pointer;color:var(--muted);transition:var(--transition)}
.theme-toggle i{font-size:1.05rem}
.theme-toggle:hover{color:var(--primary)}

/* Hero Section */
.hero-section {
    padding: 6rem 0;
    text-align: center;
    position: relative;
    z-index: 1;
}
.hero-title {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
}
.hero-subtitle {
    font-size: 1.25rem;
    color: var(--muted);
    max-width: 800px;
    margin: 0 auto 2rem;
}

/* --- New About Section Styles --- */
.about-section {
    padding: 5.5rem 0 5rem; 
    position: relative;
    z-index: 1; 
}
.about-intro {
    font-size: 1.15rem;
    color: var(--muted);
    max-width: 820px;
    margin: 0 auto 3rem;
    text-align: center;
}
.about-services {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    max-width: 900px;
    margin: 3rem auto 0;
    text-align: center;
}
.about-subtitle {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
}
.service-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    justify-content: center;
}
.service-list li {
    background: var(--surface);
    color: var(--primary-dark);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}
.about-how {
    max-width: 820px;
    margin: 4rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--card-contrast);
    text-align: center;
}
.about-how p {
    color: var(--muted);
    line-height: 1.8;
    font-size: 1.05rem;
}
/* --- End New About Section Styles --- */
  
/* Projects */
.projects-section{
    padding:2.8rem 0 5rem;
    position: relative;
    z-index: 1; /* Ensure projects sit above canvas */
}
.section-title{text-align:center;font-size:2.2rem;margin-bottom:2.6rem;position:relative}
.section-title::after{content:'';position:absolute;left:50%;transform:translateX(-50%);bottom:-18px;width:80px;height:6px;background:var(--primary);border-radius:6px}
.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:2rem;margin:0 auto}
.project-card{
    background:var(--surface);
    border-radius:var(--radius);
    box-shadow: 0 8px 28px var(--card-contrast);
    overflow:hidden;
    display:flex;flex-direction:column;height:100%;
    transform:translateY(32px);opacity:0;transition: transform 560ms cubic-bezier(.2,.9,.3,1),opacity 560ms;
    border: 1px solid transparent; /* default border */
}
:root.dark .project-card {
    border-color: rgba(255, 255, 255, 0.05);
}
.project-card.show{transform:translateY(0);opacity:1}
.project-image{height:220px;background:var(--card-contrast);display:flex;align-items:center;justify-content:center;overflow:hidden}
.project-image i { color: var(--primary); font-size: 3rem; transition: var(--transition); }
.project-card:hover .project-image i { transform: scale(1.1); color: var(--secondary); }

.project-tag-container {
    display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem;
}
.project-tag{
    background:var(--primary);color:#fff;padding:.35rem .7rem;border-radius:999px;font-weight:700;font-size:.78rem;
    transition: var(--transition);
}
.project-tag.ai { background: var(--secondary); }
.project-tag.realestate { background: #10b981; }
.project-tag.hospitality { background: #0ea5e9; }
  
.project-info{padding:1.6rem;flex-grow:1;display:flex;flex-direction:column;gap:.6rem}
.project-info h3{margin:0;color:var(--text)}
.project-info p{margin:0;color:var(--muted);line-height:1.6;flex-grow:1}
.project-links{display:flex;gap:.7rem;align-items:center}

.project-cta {
    display: flex; justify-content: flex-end; margin-top: 1rem;
}
.project-cta a {
    color: var(--primary); font-weight: 700; font-size: 0.9rem;
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    text-align: center;
    background: var(--primary);
    position: relative;
    z-index: 1;
}
.contact-section h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.contact-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    margin-bottom: 2rem;
}
.contact-btn {
    background: white;
    color: var(--primary);
    border: 2px solid white;
    transition: var(--transition);
}
.contact-btn:hover {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
    transform: translateY(-3px);
}
  
/* Footer */
footer{
    background:transparent;
    padding:3rem 0 2rem;
    margin-top:4rem;
    position: relative;
    z-index: 1; /* Ensure footer sits above canvas */
}
.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem;margin-bottom:2rem}
.footer-column h3{font-size:1.05rem;margin-bottom:1rem;color:var(--text)}
.footer-column p, .footer-links li{color:var(--muted)}
.footer-links a{color:var(--muted)}
.footer-links li i { color: var(--primary); margin-right: 0.5rem; }
.footer-links a:hover { color: var(--primary); text-decoration: none; }

.footer-bottom{border-top:1px solid rgba(100, 116, 139, 0.2);padding-top:1.25rem;color:var(--muted);text-align:center;font-size:.9rem}
:root.dark .footer-bottom{border-top:1px solid rgba(159, 176, 200, 0.1);}
.social-icons {
    display: flex; gap: 1rem; font-size: 1.4rem;
}
.social-icons a {
    color: var(--muted); transition: var(--transition);
}
.social-icons a:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

/* Lightbox & Modal Styles (Required for JS functionality) */
.modal-backdrop, .lightbox {
    position: fixed; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: rgba(2,6,23,0.86);
    opacity: 0; visibility: hidden; transition: opacity .28s ease;
    z-index: 1500;
}
.modal-backdrop.active, .lightbox.active {
    opacity: 1; visibility: visible;
}

.detail-modal-panel {
    background: var(--surface); color: var(--text); border-radius: 12px;
    box-shadow: var(--shadow); max-width: 90%; max-height: 90vh;
    width: 600px; padding: 2rem;
    transform: scale(0.95); transition: transform 0.3s ease;
    overflow-y: auto;
}
.detail-modal-panel.active {
    transform: scale(1);
}
.modal-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem;
}
.modal-header h3 {
    font-size: 1.8rem; margin: 0;
}
.modal-close {
    background: transparent; border: none; font-size: 1.5rem; color: var(--muted); cursor: pointer;
}
.modal-image {
    width: 100%; height: auto; max-height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 1rem;
    background: var(--card-contrast);
}
  
/* reveal (used by JS) */
.reveal{opacity:0;transform:translateY(8px) scale(.996);transition:opacity .42s cubic-bezier(.2,.9,.3,1),transform .42s}
.reveal.show, .project-card.show, .hero-title.show, .hero-subtitle.show, .section-title.show{opacity:1;transform:none}
  
/* focus / accessibility */
:focus{outline:3px solid rgba(56,189,248,0.08);outline-offset:3px;border-radius:8px}
  
/* small screens */
@media (max-width:992px){ 
    .projects{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.4rem} 
}
@media (max-width:768px){
    .mobile-toggle{display:block}
    .nav-links{
        position:fixed;
        top: 68px; /* Adjusted to header height */
        right:-100%;
        flex-direction:column;
        background:var(--surface);
        width: min(90vw, 300px);
        height:calc(100vh - 68px);
        padding:1.5rem;
        box-shadow:var(--shadow);
        transition:right .28s;
        border-left: 1px solid var(--card-contrast);
    }
    .nav-links.active{right:0}
    .nav-links li {
        width: 100%;
        text-align: left;
    }
    .nav-links a::after { bottom: -2px; }
    .about-services {
        grid-template-columns: 1fr;
    }
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .detail-modal-panel { max-height: 95vh; }
}
@media (max-width:576px){
    .project-image{height:180px}
}