:root {
    --bg-color: #0a0510;
    --text-main: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.05);
    --orb-bg: #000000;
    --primary: #00d2ff;
    --primary-glow: rgba(0, 210, 255, 0.5);
    --font-mono: 'Space Mono', monospace;
    --font-title: 'Rajdhani', sans-serif;
}

body.theme-blue  { --primary: #00d2ff; --primary-glow: rgba(0, 210, 255, 0.5); }
body.theme-green { --primary: #00ff66; --primary-glow: rgba(0, 255, 102, 0.5); }
body.theme-orange{ --primary: #ff5e00; --primary-glow: rgba(255, 94, 0, 0.5); }
body.theme-purple{ --primary: #d500f9; --primary-glow: rgba(213, 0, 249, 0.5); }

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
::selection { background-color: var(--primary); color: #000000; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }

body {
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 10%, var(--primary-glow) 0%, transparent 50%);
    color: var(--text-main);
    font-family: var(--font-title);
    min-height: 100vh;
    transition: background-image 0.5s ease;
    overflow-x: hidden;
}

.theme-control-panel {
    position: fixed;
    left: 20px;
    bottom: 20px;
    padding: 10px 15px;
    border-radius: 50px;
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    background-color: var(--glass-bg);
    transition: transform 0.3s ease, border-color 0.5s ease;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.15);
}
.theme-control-panel:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: 0 10px 40px var(--primary-glow); }
.color-options { display: flex; gap: 12px; }
.color-btn { width: 18px; height: 18px; border-radius: 50%; cursor: pointer; border: none; transition: transform 0.2s, box-shadow 0.2s; }
.color-btn:hover { transform: scale(1.4); }
.theme-blue-btn   { background: #00d2ff; box-shadow: 0 0 10px #00d2ff; }
.theme-green-btn  { background: #00ff66; box-shadow: 0 0 10px #00ff66; }
.theme-orange-btn { background: #ff5e00; box-shadow: 0 0 10px #ff5e00; }
.theme-purple-btn { background: #d500f9; box-shadow: 0 0 10px #d500f9; }

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
    transition: border-color 0.5s ease;
}

.top-bar { display: flex; justify-content: space-between; padding: 1.5rem 5%; align-items: center; position: sticky; top: 0; z-index: 100; background: var(--glass-bg); backdrop-filter: blur(10px); border-bottom: 1px solid var(--glass-border); transition: 0.5s; }
.system-status { display: flex; gap: 12px; flex-wrap: wrap; }
.status-pill { font-family: var(--font-mono); font-size: 0.7rem; padding: 6px 14px; border: 1px solid var(--glass-border); border-radius: 4px; display: flex; align-items: center; gap: 8px; color: var(--text-muted); background: var(--glass-bg); letter-spacing: 1px; transition: 0.5s; }
.dot { width: 7px; height: 7px; border-radius: 50%; }
.dot.red   { background: #ff3366; box-shadow: 0 0 10px #ff3366; }
.dot.green { background: #00ffcc; box-shadow: 0 0 10px #00ffcc; }
.cyber-nav { display: flex; gap: 20px; }
.nav-link { color: var(--text-muted); text-decoration: none; font-family: var(--font-mono); font-size: 0.85rem; font-weight: bold; letter-spacing: 1px; transition: 0.3s; }
.nav-link:hover { color: var(--primary); text-shadow: 0 0 15px var(--primary-glow); }

.hero-section { display: flex; justify-content: space-between; align-items: center; padding: 0 10%; min-height: 90vh; }
.hero-content { max-width: 600px; }
.main-title { font-size: 4.5rem; line-height: 1.1; font-weight: 700; margin-bottom: 1rem; color: var(--text-main); letter-spacing: -1px; }
.subtitle { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 2.5rem; line-height: 1.6; }
.live-status { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); letter-spacing: 1px; }
.accent-text { color: var(--primary); text-shadow: 0 0 12px var(--primary-glow); font-weight: bold; transition: color 0.3s, text-shadow 0.3s; }
.hero-buttons { display: flex; gap: 15px; flex-wrap: wrap; margin-top: 25px; }
.cyber-btn { display: inline-flex; align-items: center; padding: 12px 24px; border: 1px solid var(--primary); color: var(--primary); text-decoration: none; font-family: var(--font-mono); font-weight: bold; background: var(--glass-bg); transition: 0.3s; border-radius: 4px; letter-spacing: 1px; cursor: pointer; }
.cyber-btn i { margin-right: 8px; font-size: 1.1rem; }
.cyber-btn:hover { background: var(--primary); color: var(--bg-color); box-shadow: 0 0 25px var(--primary-glow); transform: translateY(-3px); }

.hero-visual { flex: 1; display: flex; justify-content: flex-end; }
.radar-container { position: relative; width: 380px; height: 380px; display: flex; justify-content: center; align-items: center; }
.radar-ring { position: absolute; border-radius: 50%; }
.external-ring { width: 100%; height: 100%; border: 1px solid var(--glass-border); border-top: 2px solid var(--primary); animation: spin 8s linear infinite; }
.internal-ring { width: 78%; height: 78%; border: 1px dashed var(--primary); opacity: 0.5; animation: spin-reverse 12s linear infinite; }
.radar-core { width: 58%; height: 58%; background: var(--orb-bg); border: 2px solid var(--primary); border-radius: 50%; display: flex; justify-content: center; align-items: center; box-shadow: 0 0 40px var(--primary-glow); overflow: hidden; position: relative; z-index: 5; transition: 0.5s; }
#core-text { font-family: var(--font-mono); color: var(--primary); letter-spacing: 4px; font-weight: bold; transition: opacity 0.5s ease; text-shadow: 0 0 10px var(--primary-glow); }
#profile-img { width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 1s ease; position: absolute; filter: contrast(1.1); }
#profile-img.show { opacity: 1; }

#about, #skills, #projects, #contact { padding: 6rem 10%; text-align: center; }
.section-title { font-size: 2.5rem; margin-bottom: 3.5rem; color: var(--text-main); font-family: var(--font-mono); letter-spacing: 2px; }

.about-container { display: flex; align-items: center; justify-content: center; gap: 4rem; max-width: 950px; margin: 0 auto; padding: 3.5rem; }
.profile-img-circle { width: 180px; height: 180px; border-radius: 50%; object-fit: cover; border: 4px solid var(--primary); box-shadow: 0 0 25px var(--primary-glow); transition: border-color 0.3s, box-shadow 0.3s; }
.about-content { text-align: left; line-height: 1.8; font-size: 1.15rem; color: var(--text-muted); }

.skills-grid, .projects-grid { display: flex; justify-content: center; gap: 2.5rem; flex-wrap: wrap; max-width: 1100px; margin: 0 auto; }
.skill-card, .project-card { background: var(--glass-bg); border: 1px solid var(--glass-border); padding: 2.5rem 2rem; border-radius: 12px; width: 300px; transition: 0.3s; will-change: transform; transform-style: preserve-3d; text-align: left; }
.skill-card h3, .project-card h3 { color: var(--text-main); font-size: 1.4rem; margin-bottom: 1rem; font-family: var(--font-mono); }
.skill-card p, .project-card p { color: var(--text-muted); line-height: 1.6; margin-bottom: 1.5rem; }
.skill-card:hover, .project-card:hover { transform: translateY(-8px); border-color: var(--primary); box-shadow: 0 15px 35px var(--primary-glow); }

.project-status { font-family: var(--font-mono); font-size: 0.7rem; color: #00ffcc; letter-spacing: 2px; margin-bottom: 1rem; }

.progress-container { width: 100%; height: 6px; background: var(--glass-border); border-radius: 5px; margin-top: 15px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--primary); border-radius: 5px; transition: width 1.5s ease-in-out; box-shadow: 0 0 10px var(--primary); }

.contact-container { max-width: 650px; margin: 0 auto; padding: 3rem; }
form { display: flex; flex-direction: column; gap: 2rem; }
.input-group { position: relative; width: 100%; }
.input-group input, .input-group textarea { width: 100%; padding: 1.6rem 1.2rem 0.6rem; border: 1px solid var(--glass-border); border-radius: 8px; background: var(--glass-bg); color: var(--text-main); font-size: 1rem; outline: none; font-family: var(--font-mono); transition: 0.3s; }
.input-group label { position: absolute; left: 1.2rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-family: var(--font-mono); pointer-events: none; transition: 0.3s; letter-spacing: 1px; }
.input-group textarea ~ label { top: 1.6rem; }
.input-group input:focus, .input-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 15px var(--primary-glow); }
.input-group input:focus ~ label, .input-group input:valid ~ label,
.input-group textarea:focus ~ label, .input-group textarea:valid ~ label { top: 10px; font-size: 0.75rem; color: var(--primary); font-weight: bold; }
#success-msg { color: #00ffcc; font-weight: bold; margin-top: 1rem; opacity: 0; transition: 0.3s; }
#success-msg.show-msg { opacity: 1; }

footer { width: 100%; padding: 2.5rem 5%; background: var(--glass-bg); border-top: 1px solid var(--glass-border); margin-top: 60px; }
.footer-content { display: flex; justify-content: space-between; align-items: center; width: 100%; max-width: 1200px; margin: 0 auto; flex-wrap: wrap; gap: 20px; }
.footer-left { display: flex; gap: 12px; }
.social-btn { display: inline-flex; align-items: center; padding: 10px 18px; background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-muted); border-radius: 4px; text-decoration: none; font-family: var(--font-mono); transition: 0.3s; }
.social-btn i { margin-right: 10px; color: var(--primary); font-size: 1.1rem; }
.social-btn:hover { border-color: var(--primary); color: var(--bg-color); background: var(--primary); transform: translateY(-3px); box-shadow: 0 5px 15px var(--primary-glow); }
.footer-right p { color: var(--text-muted); font-family: var(--font-mono); }
.heart { color: #ff3366; animation: heartbeat 1.5s infinite; display: inline-block; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: rgba(0,0,0,0.85); backdrop-filter: blur(8px); display: flex; justify-content: center; align-items: center; z-index: 100000; opacity: 0; visibility: hidden; transition: 0.3s; }
.modal-overlay.show-modal { opacity: 1; visibility: visible; }
.modal-content { width: 90%; max-width: 550px; padding: 3rem; text-align: center; border-color: var(--primary); transform: translateY(-30px); transition: 0.3s; position: relative; box-shadow: 0 0 30px var(--primary-glow); }
.modal-overlay.show-modal .modal-content { transform: translateY(0); }
.close-btn { position: absolute; top: 15px; right: 20px; font-size: 2rem; color: var(--text-muted); cursor: pointer; transition: 0.3s; }
.close-btn:hover { color: #ff3366; text-shadow: 0 0 10px #ff3366; }
.modal-content h3 { color: var(--primary); margin-bottom: 1.5rem; font-family: var(--font-mono); font-size: 2rem; }
.modal-content p { color: var(--text-muted); margin-bottom: 2.5rem; line-height: 1.7; font-size: 1.1rem; }
.modal-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-top: 15px; }

#scroll-progress { position: fixed; top: 0; left: 0; width: 0%; height: 4px; background: var(--primary); z-index: 10000; transition: width 0.1s ease-out; box-shadow: 0 0 12px var(--primary-glow); }
#scroll-top { position: fixed; bottom: 30px; right: -60px; width: 45px; height: 45px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 1.5rem; color: var(--bg-color); cursor: pointer; z-index: 999; transition: 0.3s; background: var(--primary); box-shadow: 0 0 20px var(--primary-glow); border: 1px solid var(--primary); }
#scroll-top.show-btn { right: 30px; }
#scroll-top:hover { transform: scale(1.1); background: transparent; color: var(--primary); }

#typing-text::after { content: '_'; color: var(--primary); animation: blink 1s infinite; text-shadow: 0 0 5px var(--primary-glow); }
@keyframes blink     { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes spin      { 100% { transform: rotate(360deg); } }
@keyframes spin-reverse { 100% { transform: rotate(-360deg); } }
@keyframes heartbeat { 0%, 28%, 70% { transform: scale(1); } 14%, 42% { transform: scale(1.2); } }

@media (max-width: 768px) {
    .theme-control-panel { left: 50%; transform: translateX(-50%); bottom: 10px; padding: 10px 15px; }
    .hero-section { flex-direction: column-reverse; padding: 6rem 5% 3rem; text-align: center; gap: 2rem; }
    .radar-container { width: 260px; height: 260px; }
    .main-title { font-size: 3rem; }
    .about-container { flex-direction: column; padding: 2rem 1.5rem; gap: 2rem; }
    .footer-content { flex-direction: column; text-align: center; gap: 1.5rem; }
    .modal-buttons { flex-direction: column; }
    nav { display: flex; flex-direction: column; align-items: center; justify-content: center; width: 100%; gap: 15px; padding: 20px 0; position: relative; }
    nav a, .nav-links a { text-align: center; display: block; width: auto; }
}

.hero-buttons .cyber-btn {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease !important;
}