/* --- THEME VARIABLES --- */
:root { /* Theme 1: Default Minimal Dark */
    --bg-color: #09090b; 
    --bg-gradient: radial-gradient(circle at top left, #111827, #09090b 40%, #1c1938 100%);
    --text-primary: #f4f4f5; 
    --text-secondary: #a1a1aa; 
    --accent-main: #8b5cf6;
    --accent-alt: #3b82f6;
    --card-bg: rgba(255, 255, 255, 0.02);
    --card-border: rgba(255, 255, 255, 0.05);
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-code: 'Fira Code', monospace;
    --font-main: 'Inter', -apple-system, sans-serif;
    
    --scrollbar-bg: #09090b;
}

[data-theme="light"] { /* Theme 2: Crisp Minimal Light */
    --bg-color: #f8fafc;
    --bg-gradient: radial-gradient(circle at top left, #ffffff, #f1f5f9 40%, #e2e8f0 100%);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-main: #4f46e5;
    --accent-alt: #0ea5e9;
    --card-bg: #ffffff;
    --card-border: #cbd5e1;
    --scrollbar-bg: #e2e8f0;
}

[data-theme="matrix"] { /* Theme 3: Minimal Hacker */
    --bg-color: #020a02;
    --bg-gradient: radial-gradient(circle at top left, #051405, #020a02 40%, #0a290a 100%);
    --text-primary: #e0ffe0;
    --text-secondary: #669966;
    --accent-main: #00ff00;
    --accent-alt: #00cc00;
    --card-bg: rgba(0, 255, 0, 0.02);
    --card-border: rgba(0, 255, 0, 0.1);
    --scrollbar-bg: #020a02;
}

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

body { 
    font-family: var(--font-main); 
    background: var(--bg-color); 
    background-image: var(--bg-gradient);
    color: var(--text-primary); 
    line-height: 1.6; 
    overflow-x: hidden; 
    min-height: 100vh;
    transition: background 0.5s ease, color 0.5s ease;
}

/* --- TYPOGRAPHY UPGRADES --- */
h1, h2, h3, .label, .submit-btn, .action-buttons a, .archive-btn {
    font-family: var(--font-heading);
    letter-spacing: -0.5px;
}
.hero-label, .loader-text, .terminal-msg {
    font-family: var(--font-code);
}
.terminal-msg {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* --- THEME DYNAMIC SCROLLBAR --- */
html { scrollbar-width: thin; scrollbar-color: var(--accent-main) var(--scrollbar-bg); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--scrollbar-bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(to bottom, var(--accent-alt), var(--accent-main)); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-main); }

/* --- UI/UX CUSTOM CURSOR --- */
.cursor-dot, .cursor-outline {
    position: fixed; top: 0; left: 0; transform: translate(-50%, -50%);
    border-radius: 50%; z-index: 99998; pointer-events: none;
}
.cursor-dot { width: 8px; height: 8px; background-color: var(--accent-main); }
.cursor-outline {
    width: 40px; height: 40px; border: 2px solid var(--accent-alt);
    transition: width 0.2s, height 0.2s, background-color 0.2s;
}

a { text-decoration: none; color: var(--text-primary); transition: all 0.3s ease; }

/* --- LOADER --- */
#global-loader {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background-color: var(--bg-color); z-index: 99999;
    display: flex; justify-content: center; align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}
#global-loader.hidden { opacity: 0; visibility: hidden; }
.loader-content { display: flex; align-items: center; gap: 15px; color: var(--accent-main); font-size: 1.5rem; }

/* --- TOP BAR & PROGRESS --- */
#reading-progress {
    position: fixed; top: 0; left: 0; width: 0%; height: 3px;
    background: linear-gradient(to right, var(--accent-alt), var(--accent-main));
    z-index: 9999; transition: width 0.1s ease-out;
}
.top-bar { position: fixed; top: 20px; right: 30px; z-index: 1000; }
#theme-btn { font-size: 1.5rem; color: var(--accent-main); cursor: none; transition: transform 0.3s ease; }
#theme-btn:hover { transform: rotate(45deg) scale(1.2); }

/* --- ANIMATED GLOWING LIGHT BOX EFFECT --- */
.glowing-box {
    position: relative;
    overflow: hidden;
    z-index: 1;
}
.glowing-box::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: rotate(45deg);
    animation: lightSweep 4s infinite linear;
    z-index: -1;
    pointer-events: none;
}
[data-theme="light"] .glowing-box::before {
    background: linear-gradient(45deg, transparent, rgba(0, 0, 0, 0.03), transparent);
}
@keyframes lightSweep {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

/* --- LAYOUT --- */
.container { max-width: 800px; margin: 0 auto; padding: 0 2rem; }
section { padding: 4rem 0; }

header { height: 90vh; display: flex; flex-direction: column; justify-content: center; }
.hero-label { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 2px; color: var(--accent-alt); font-weight: 600; }
h1 { font-size: 4rem; font-weight: 800; line-height: 1.1; margin: 1rem 0; }
.highlight-text { background: linear-gradient(to right, var(--accent-alt), var(--accent-main)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.bio { font-size: 1.25rem; color: var(--text-secondary); max-width: 600px; margin-bottom: 2rem; }

/* --- BUTTONS --- */
.action-buttons { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.primary-btn, .secondary-btn, .social-btn, .archive-btn {
    display: inline-flex; align-items: center; gap: 0.5rem; 
    border-radius: 50px; font-weight: 600;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1); cursor: none;
}
.primary-btn { padding: 0.8rem 1.8rem; background: var(--text-primary); color: var(--bg-color); border: none; }
.primary-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.2); }
.secondary-btn { padding: 0.8rem 1.8rem; border: 1px solid var(--accent-main); color: var(--accent-main); background: transparent; }
.secondary-btn:hover { background: var(--accent-main); color: #fff; transform: translateY(-3px); }

/* --- ABOUT & BLOG GRID --- */
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; }
.label { font-weight: 600; font-size: 1.1rem; color: var(--accent-main); }
.about-text-clean { color: var(--text-secondary); font-size: 1.2rem; line-height: 1.8; }

/* Read on Medium Button beside Featured Writings */
.blog-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--card-border); padding-bottom: 1rem; margin-bottom: 2rem; flex-wrap: wrap; gap: 1rem; }
.archive-btn { padding: 0.5rem 1.2rem; font-size: 0.9rem; border: 1px solid var(--accent-alt); color: var(--accent-alt); }
.archive-btn:hover { background: var(--accent-alt); color: #fff; transform: translateY(-2px); box-shadow: 0 5px 15px rgba(59, 130, 246, 0.3); }

#blog-container { display: flex; flex-direction: column; gap: 2rem; }

.blog-post { 
    background: var(--card-bg); border: 1px solid var(--card-border); 
    padding: 1.5rem; border-radius: 12px; transition: all 0.4s ease; cursor: none;
}
.blog-post:hover { 
    transform: translateY(-5px) scale(1.02); 
    border-color: var(--accent-main); 
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.2), inset 0 0 10px rgba(59, 130, 246, 0.1); 
}
.post-meta { font-size: 0.85rem; color: var(--accent-alt); font-weight: 600; margin-bottom: 0.5rem; }
.blog-post h3 { font-size: 1.5rem; margin-bottom: 0.8rem; color: var(--text-primary); }
.excerpt { color: var(--text-secondary); }

/* --- CONTACT FORM --- */
.minimal-form { display: flex; flex-direction: column; gap: 1.5rem; padding: 2rem; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px; }
.input-group input, .input-group textarea {
    width: 100%; background: var(--bg-color); border: 1px solid var(--card-border);
    color: var(--text-primary); padding: 1rem 1.2rem; border-radius: 8px; font-family: var(--font-main);
    font-size: 1rem; transition: all 0.3s ease; cursor: none;
}
.input-group input:focus, .input-group textarea:focus { outline: none; border-color: var(--accent-main); box-shadow: 0 0 15px rgba(139, 92, 246, 0.1); }
.submit-btn { width: 100%; justify-content: center; font-size: 1.1rem; }

/* --- FOOTER & BRAND COLORS --- */
footer { margin-top: 4rem; padding: 4rem 0 2rem; border-top: 1px solid var(--card-border); text-align: center; }
.social-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 1.5rem; margin: 2rem 0; }
.social-btn { padding: 0.8rem 1.5rem; border: 1px solid var(--card-border); color: var(--text-secondary); }

/* Brand Colors on Hover */
.social-btn.github:hover { border-color: #fff; color: #fff; box-shadow: 0 0 15px rgba(255,255,255,0.4); transform: translateY(-5px); }
.social-btn.linkedin:hover { border-color: #0077b5; color: #0077b5; box-shadow: 0 0 15px rgba(0,119,181,0.4); transform: translateY(-5px); }
.social-btn.email:hover { border-color: #ea4335; color: #ea4335; box-shadow: 0 0 15px rgba(234,67,53,0.4); transform: translateY(-5px); }
.social-btn.whatsapp:hover { border-color: #25d366; color: #25d366; box-shadow: 0 0 15px rgba(37,211,102,0.4); transform: translateY(-5px); }
.social-btn.telegram:hover { border-color: #0088cc; color: #0088cc; box-shadow: 0 0 15px rgba(0,136,204,0.4); transform: translateY(-5px); }

/* Light Theme overrides for Github */
[data-theme="light"] .social-btn.github:hover { border-color: #000; color: #000; box-shadow: 0 0 15px rgba(0,0,0,0.3); }

.footer-credit { color: var(--text-secondary); font-size: 0.9rem; margin-top: 2rem; letter-spacing: 1px; }

/* --- SECRET EASTER EGG LINK --- */
.secret-link {
    color: var(--accent-main);
    font-family: var(--font-heading);
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
}
.secret-link:hover {
    color: var(--accent-alt);
    text-shadow: 0 0 12px var(--accent-alt);
}

/* --- EVERYWHERE ANIMATIONS --- */
.scroll-reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1); }
.scroll-reveal.visible { opacity: 1; transform: translateY(0); }

.anim-fade-up { opacity: 0; transform: translateY(20px); animation: fadeUp 0.8s forwards; }
.anim-fade-down { opacity: 0; transform: translateY(-20px); animation: fadeDown 0.8s forwards; }
.anim-slide-right { opacity: 0; transform: translateX(-30px); transition: all 0.8s ease; }
.anim-scale-up { opacity: 0; transform: scale(0.95); transition: all 0.6s ease; }

.visible .anim-slide-right { opacity: 1; transform: translateX(0); }
.visible .anim-scale-up { opacity: 1; transform: scale(1); }

.delay-1 { animation-delay: 0.2s; transition-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; transition-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; transition-delay: 0.6s; }

@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes fadeDown { to { opacity: 1; transform: translateY(0); } }

/* Mobile Fixes */
@media (max-width: 768px) {
    * { cursor: auto !important; }
    .cursor-dot, .cursor-outline { display: none; }
    h1 { font-size: 2.5rem; }
    .about-grid { grid-template-columns: 1fr; }
    .blog-header { flex-direction: column; align-items: flex-start; }
    .action-buttons { flex-direction: column; width: 100%; }
    .primary-btn, .secondary-btn { justify-content: center; }
}