/* --- 1. CSS VARIABLES --- */
:root {
    /* Backgrounds: Deep Slate Blue (Dark Mode Default) */
    --bg-dark: #0f172a; 
    --bg-card: rgba(30, 41, 59, 0.7);
    
    /* Text */
    --text-white: #f8fafc;
    --text-gray: #94a3b8;
    
    /* Accents */
    --primary: #38bdf8;   /* Sky Blue */
    --secondary: #6366f1; /* Indigo */
    --accent: #2dd4bf;    /* Teal */
    
    /* Gradients */
    --main-gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(56, 189, 248, 0.2);
    --shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* --- LIGHT MODE OVERRIDES --- */
.light-mode {
    --bg-dark: #f3f4f6; /* Cloud Gray */
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-white: #1e293b; /* Deep Charcoal */
    --text-gray: #64748b;
    --primary: #0ea5e9;   /* Ocean Blue */
    --secondary: #6366f1; 
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(14, 165, 233, 0.15);
    --shadow: 0 10px 40px rgba(0,0,0,0.08);
}

/* --- 2. GLOBAL STYLES --- */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

* { margin: 0; padding: 0; box-sizing: border-box; cursor: none; }

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    overflow-x: hidden;
    line-height: 1.7;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { 
    background: linear-gradient(var(--bg-dark), var(--secondary), var(--bg-dark)); 
    border-radius: 5px; 
}

/* --- 3. ANIMATED BACKGROUND --- */
#bgCanvas {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -2;
    background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-dark) 100%);
}

.glow-spot {
    position: fixed;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
    animation: pulseGlow 10s infinite alternate;
}
.glow-1 { top: -150px; left: -150px; background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%); }
.glow-2 { bottom: -150px; right: -150px; animation-delay: 5s; }

@keyframes pulseGlow {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.1); opacity: 0.6; }
}

/* --- 4. CUSTOM CURSOR --- */
.cursor {
    width: 30px; height: 30px;
    border: 1px solid var(--primary);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s, border-color 0.3s;
    mix-blend-mode: screen; 
}
.light-mode .cursor { mix-blend-mode: normal; border-color: var(--primary); }

.cursor-dot {
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px var(--primary);
}

/* --- 5. NAVIGATION --- */
nav {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 8%;
    position: fixed; width: 100%; top: 0; z-index: 1000;
    background: var(--bg-card); 
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: 0.3s;
}

.logo { display: flex; align-items: center; gap: 15px; }
.logo img { height: 45px; width: auto; }

.logo-text {
    font-size: 1.5rem; font-weight: 700; letter-spacing: 1px;
    background: linear-gradient(to right, var(--text-white), var(--primary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* Nav Links */
.nav-links { display: flex; align-items: center; }
.nav-links a {
    color: var(--text-gray); text-decoration: none; margin-left: 2.5rem;
    transition: 0.3s; font-size: 0.9rem; font-weight: 500;
    text-transform: uppercase; letter-spacing: 1px;
    position: relative;
}
.nav-links a::after {
    content: ''; position: absolute; width: 0; height: 2px;
    bottom: -5px; left: 0; background: var(--primary);
    transition: width 0.3s;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }

/* Buttons in Nav */
.theme-toggle {
    cursor: pointer; font-size: 1.2rem; color: var(--text-white); margin-left: 20px; transition: 0.3s;
}
.theme-toggle:hover { color: var(--primary); transform: rotate(15deg); }

.menu-btn { display: none; font-size: 1.8rem; color: var(--primary); cursor: pointer; }

/* --- 6. HERO SECTION --- */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    text-align: center; padding: 0 20px;
    position: relative;
}

.hero-wrapper {
    display: flex; align-items: center; gap: 50px; margin-bottom: 40px;
}

.hero h1 {
    font-size: 5rem; line-height: 1.1; font-weight: 700;
    text-align: left;
    background: linear-gradient(135deg, var(--text-white) 0%, var(--text-gray) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero h1 span {
    background: var(--main-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* Code Box */
.code-box {
    width: 280px; height: 280px;
    background: #1e293b; /* Dark theme preserved for code readability */
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 8px;
    display: flex; flex-direction: column; justify-content: center;
    padding: 25px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    text-align: left;
    box-shadow: var(--shadow);
    transform: translateY(10px);
    animation: floatCode 6s ease-in-out infinite;
    position: relative;
}
.code-box::after {
    content: ''; position: absolute; top: -1px; left: -1px; right: -1px; bottom: -1px;
    border-radius: 8px; z-index: -1;
    background: linear-gradient(135deg, var(--primary), transparent); opacity: 0.2;
}
@keyframes floatCode {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.code-header { display: flex; gap: 8px; margin-bottom: 20px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.red { background: #ef4444; } .yellow { background: #f59e0b; } .green { background: #10b981; }

/* Syntax Highlighting */
.c-purple { color: #c084fc; } .c-blue { color: #38bdf8; } .c-yellow { color: #facc15; } .c-green { color: #4ade80; } .c-white { color: #e2e8f0; }

/* Bio Container */
.bio-container {
    max-width: 900px;
    margin: 0 auto 50px auto;
    text-align: left;
    background: var(--glass-bg);
    padding: 30px;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    backdrop-filter: blur(5px);
    box-shadow: var(--shadow);
}

.bio-text {
    font-size: 1.15rem; color: var(--text-gray);
    line-height: 1.8; font-weight: 400; margin-bottom: 15px;
    opacity: 0; transform: translateX(-20px); filter: blur(5px);
    animation: bioSlideIn 0.8s ease-out forwards;
}
.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; margin-bottom: 0; }

@keyframes bioSlideIn {
    to { opacity: 1; transform: translateX(0); filter: blur(0); }
}

.btn-glow {
    padding: 14px 40px; background: transparent;
    border: 1px solid var(--primary); border-radius: 4px;
    color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 1px;
    text-decoration: none; position: relative; overflow: hidden; transition: 0.3s; z-index: 1;
}
.btn-glow:hover { background: var(--primary); color: #fff; box-shadow: 0 0 30px rgba(56, 189, 248, 0.4); }

/* --- 7. SECTIONS & CARDS --- */
section { padding: 100px 10%; }
.section-header { text-align: center; margin-bottom: 80px; }
.section-header h2 { font-size: 2.8rem; margin-bottom: 15px; font-weight: 600; color: var(--text-white); }
.section-header .line { width: 60px; height: 3px; background: var(--primary); margin: 0 auto; border-radius: 2px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.card-wrap { perspective: 1000px; }
.card {
    background: var(--bg-card); border-radius: 8px; padding: 40px; height: 100%;
    position: relative; backdrop-filter: blur(10px); border: 1px solid var(--glass-border);
    transform-style: preserve-3d; transition: transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow);
}
.card:hover { 
    background: var(--bg-card); 
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15); 
    border-color: var(--primary); 
}
.card-content { transform: translateZ(30px); }
.card h3 { font-size: 1.5rem; margin-bottom: 8px; color: var(--text-white); }
.card h4 { font-size: 0.9rem; margin-bottom: 20px; color: var(--primary); font-weight: 600; text-transform: uppercase; }
.card p, .card ul { color: var(--text-gray); font-size: 0.95rem; }
.card ul { list-style: none; padding-left: 0; }
.card li { margin-bottom: 10px; display: flex; align-items: flex-start; }
.card li::before { content: '>'; color: var(--secondary); margin-right: 12px; font-weight: bold; }

/* --- 8. LIST & CONTACT --- */
.list-item { 
    background: var(--bg-card); padding: 25px; border-left: 3px solid var(--secondary); 
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 15px; transition: 0.3s; border-radius: 0 4px 4px 0; border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
}
.list-item:hover { background: rgba(56, 189, 248, 0.05); border-left-color: var(--primary); transform: translateX(5px); }
.list-item i { font-size: 1.8rem; color: var(--primary); opacity: 0.8; }

.contact-box { text-align: center; margin-top: 50px; }
.contact-item { font-size: 1.1rem; color: var(--text-gray); margin: 12px 0; display: flex; justify-content: center; align-items: center; gap: 12px; }
.contact-item i { color: var(--primary); }

/* SOCIAL ICONS STYLE */
.social-container {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}
.social-icon {
    font-size: 1.8rem;
    color: var(--text-gray);
    transition: 0.3s;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px; height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}
.social-icon:hover {
    color: var(--text-white);
    background: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 0 20px var(--primary);
    border-color: var(--primary);
}

footer { text-align: center; padding: 60px 0; margin-top: 80px; border-top: 1px solid var(--glass-border); background: var(--bg-dark); font-size: 0.9rem; color: var(--text-gray); }

/* --- 9. MOBILE RESPONSIVENESS --- */
@media (max-width: 900px) {
    /* Disable custom cursor */
    .cursor, .cursor-dot { display: none; }
    * { cursor: auto; }

    /* Navigation */
    nav { padding: 15px 5%; justify-content: space-between; }
    .logo { z-index: 1001; }
    .logo-text { font-size: 1.4rem; color: var(--text-white); }
    .menu-btn { display: block; z-index: 1002; color: var(--text-white); }

    /* Mobile Menu Overlay */
    .nav-links { 
        position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
        background: var(--bg-dark); flex-direction: column; justify-content: center;
        transform: translateY(-100%); transition: transform 0.4s ease-in-out; z-index: 999;
    }
    .nav-links.active { transform: translateY(0); }
    .nav-links a { margin: 20px 0; font-size: 1.5rem; }
    
    .theme-toggle { margin-left: 0; margin-top: 20px; font-size: 1.5rem; }

    /* Hero */
    .hero { padding-top: 100px; display: block; } 
    .hero-wrapper { flex-direction: column; text-align: center; gap: 30px; margin-bottom: 30px; }
    .hero h1 { font-size: 3rem; text-align: center; }
    .code-box { width: 100%; max-width: 320px; margin: 0 auto; }
    
    /* Text Alignment */
    .bio-container { padding: 20px; text-align: left; }
    .bio-text { font-size: 1rem; }

    /* General Layout */
    section { padding: 60px 5%; }
    .section-header h2 { font-size: 2.2rem; }
    .grid { grid-template-columns: 1fr; }
    .contact-item { flex-direction: column; gap: 5px; }
    
    /* Social Icons Mobile */
    .social-container { gap: 15px; }
    .social-icon { width: 45px; height: 45px; font-size: 1.5rem; }
}