:root {
    /* Dark Theme (Default) */
    --bg-color: #0b0d17;
    --text-color: #e0e0ff;
    --text-muted: #8b8d9c;
    --primary-color: #00f0ff; 
    --secondary-color: #b026ff; 
    
    --glass-bg: rgba(20, 22, 40, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --blur-val: blur(12px);
    
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

[data-theme="light"] {
    --bg-color: #f4f6fc;
    --text-color: #1a1a24;
    --text-muted: #5a5d6e;
    --primary-color: #0077ff; /* Deeper blue for contrast in light mode */
    --secondary-color: #9d00ff; /* Deeper purple */
    
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.5s ease, color 0.5s ease;
    cursor: none; /* Hide default cursor */
}

/* Custom Cursor */
.custom-cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    /* Use translate3d for hardware acceleration instead of top/left animation */
    transform: translate3d(-50%, -50%, 0);
    pointer-events: none;
    z-index: 9999;
    transition: width 0.2s, height 0.2s, background-color 0.2s;
    mix-blend-mode: difference;
    will-change: transform, width, height;
}

.custom-cursor.hover {
    width: 40px;
    height: 40px;
    background-color: rgba(0, 240, 255, 0.2);
}

/* Particles Canvas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

/* Background Glows */
.bg-glow {
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    opacity: 0.15;
    pointer-events: none;
    transition: background 0.5s ease;
    animation: hueShift 10s infinite alternate;
    will-change: filter;
}

@keyframes hueShift {
    0% { filter: blur(150px) hue-rotate(0deg); }
    100% { filter: blur(150px) hue-rotate(45deg); }
}

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

/* Typography */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
}

.text-gradient {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    animation: textGlow 3s ease-in-out infinite alternate;
}

@keyframes textGlow {
    0% { filter: drop-shadow(0 0 2px rgba(0,240,255,0.2)); }
    100% { filter: drop-shadow(0 0 10px rgba(176,38,255,0.6)); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section { padding: 6rem 0; }
.section-title { font-size: 2.5rem; margin-bottom: 3rem; text-align: center; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.w-100 { width: 100%; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 500;
    text-decoration: none;
    cursor: none; /* override default */
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 119, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(157, 0, 255, 0.5);
    transform: translateY(-2px);
}

.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: var(--blur-val);
    -webkit-backdrop-filter: var(--blur-val);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
}

.btn-glass:hover {
    background: rgba(128, 128, 128, 0.1);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover { background: rgba(0, 119, 255, 0.1); }

/* Navigation & Controls */
.glass-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: var(--blur-val);
    -webkit-backdrop-filter: var(--blur-val);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
    padding: 1rem 0;
    transition: background 0.5s ease, border-color 0.5s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
    cursor: none;
}

.logo span { color: var(--primary-color); }

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    cursor: none;
}

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

.controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.lang-select, .theme-toggle {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    font-family: var(--font-body);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: none;
    outline: none;
}

.lang-select option { background: var(--bg-color); color: var(--text-color); }
.theme-toggle { font-size: 1.2rem; display: flex; align-items: center; justify-content: center;}
.theme-toggle:hover { border-color: var(--primary-color); }

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--blur-val);
    -webkit-backdrop-filter: var(--blur-val);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.5s ease;
    will-change: transform;
}

/* Glow Tracing on Cards */
.project-card, .about-card, .contact-form-card, .info-card {
    position: relative;
    overflow: hidden;
}

.project-card::before, .about-card::before, .contact-form-card::before, .info-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle 250px at var(--mouse-x, 0) var(--mouse-y, 0), rgba(255, 255, 255, 0.08), transparent 40%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

[data-theme="light"] .project-card::before, [data-theme="light"] .about-card::before, [data-theme="light"] .contact-form-card::before, [data-theme="light"] .info-card::before {
    background: radial-gradient(circle 250px at var(--mouse-x, 0) var(--mouse-y, 0), rgba(0, 119, 255, 0.15), transparent 40%);
}

.project-card:hover::before, .about-card:hover::before, .contact-form-card:hover::before, .info-card:hover::before {
    opacity: 1;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 80px;
}
.hero-content { flex: 1; max-width: 600px; }
.hero-title { font-size: 3.5rem; line-height: 1.1; margin-bottom: 1rem; }
.hero-subtitle { font-size: 1.5rem; font-family: var(--font-heading); margin-bottom: 1.5rem; color: var(--text-muted); }
.typed-text { color: var(--primary-color); }
.cursor { display: inline-block; width: 3px; background-color: var(--primary-color); animation: blink 1s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.hero-description { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 1rem; }
.hero-visual { flex: 1; display: flex; justify-content: center; align-items: center; perspective: 1000px;}

.glass-orb {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0,119,255,0.2), rgba(157,0,255,0.2));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    animation: float 6s ease-in-out infinite;
    transform-style: preserve-3d;
}

.inner-glow {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--primary-color);
    filter: blur(50px);
    animation: pulseGlow 4s alternate infinite;
}

@keyframes float { 0%, 100% { transform: translateY(0) rotateX(0) rotateY(0); } 50% { transform: translateY(-20px) rotateX(10deg) rotateY(10deg); } }
@keyframes pulseGlow { 0% { transform: scale(0.8); opacity: 0.5; background: var(--primary-color); } 100% { transform: scale(1.2); opacity: 0.8; background: var(--secondary-color); } }

/* About */
.about-grid { 
    max-width: 1100px; 
    margin: 0 auto; 
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
}

.about-photo-wrapper {
    position: relative;
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    aspect-ratio: 4/5;
    transform-style: preserve-3d;
}

.photo-container {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    background: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
    position: relative;
    z-index: 2;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
}

[data-theme="light"] .photo-container {
    background: linear-gradient(145deg, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0.01) 100%);
    box-shadow: 0 15px 35px rgba(0,0,0,0.05);
}

.about-photo-wrapper:hover .photo-container {
    transform: translateY(-10px);
    border-color: rgba(0, 240, 255, 0.3);
}

[data-theme="light"] .about-photo-wrapper:hover .photo-container {
    border-color: rgba(0, 119, 255, 0.3);
}

.photo-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    opacity: 0.6;
}

.photo-icon {
    margin-bottom: 1rem;
    color: var(--primary-color);
    animation: pulseGlow 4s infinite alternate;
}

.photo-text {
    font-family: var(--font-heading);
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.about-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-decor {
    position: absolute;
    border-radius: 50%;
    filter: blur(50px);
    z-index: 1;
}

.photo-decor-1 {
    width: 200px;
    height: 200px;
    background: var(--primary-color);
    top: -30px;
    left: -30px;
    opacity: 0.2;
    animation: float 8s ease-in-out infinite;
}

.photo-decor-2 {
    width: 180px;
    height: 180px;
    background: var(--secondary-color);
    bottom: -30px;
    right: -30px;
    opacity: 0.2;
    animation: float 6s ease-in-out infinite reverse;
}

.about-card {
    padding: 2.5rem;
}

.about-subtitle-rich {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.about-lead {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.about-features-list {
    list-style: none;
    margin: 0 0 2rem 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.about-features-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.5;
}

.feature-icon {
    color: var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    margin-top: 2px;
    background: rgba(0, 240, 255, 0.1);
    padding: 0.3rem;
    border-radius: 6px;
}

[data-theme="light"] .feature-icon {
    background: rgba(0, 119, 255, 0.1);
}

.about-summary {
    font-size: 1.05rem;
    color: var(--text-color);
    border-left: 3px solid var(--primary-color);
    padding-left: 1.5rem;
    font-style: italic;
    background: linear-gradient(90deg, rgba(0, 240, 255, 0.05), transparent);
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    border-radius: 0 8px 8px 0;
}

[data-theme="light"] .about-summary {
    background: linear-gradient(90deg, rgba(0, 119, 255, 0.05), transparent);
}

/* Skills */
.skills-grid { 
    display: flex; 
    flex-wrap: wrap; 
    justify-content: center; 
    gap: 1.2rem; 
    max-width: 900px; 
    margin: 0 auto; 
}

.skill-tag {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 0.8rem 1.5rem;
    border-radius: 40px;
    font-family: var(--font-heading);
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: none;
    position: relative;
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

[data-theme="light"] .skill-tag {
    background: linear-gradient(145deg, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0.01) 100%);
    border-color: rgba(0,0,0,0.05);
}

/* Stagger floating animation */
.skill-tag:nth-child(even) { animation-delay: 1s; }
.skill-tag:nth-child(3n) { animation-delay: 2s; }
.skill-tag:nth-child(4n) { animation-delay: 1.5s; }

.skill-tag::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s ease;
}

[data-theme="light"] .skill-tag::before {
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.05), transparent);
}

.skill-tag:hover::before {
    left: 100%;
}

.skill-tag:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 10px 20px rgba(0, 240, 255, 0.2), inset 0 0 10px rgba(0, 240, 255, 0.1);
    transform: translateY(-5px) scale(1.05);
}

[data-theme="light"] .skill-tag:hover {
    background: rgba(0, 119, 255, 0.1);
    box-shadow: 0 10px 20px rgba(0, 119, 255, 0.2), inset 0 0 10px rgba(0, 119, 255, 0.1);
}

.skill-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--secondary-color);
    transition: all 0.3s ease;
}

.skill-tag:hover .skill-icon {
    color: var(--primary-color);
    transform: rotate(10deg) scale(1.1);
}

/* Projects */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }

.project-card {
    cursor: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    transform-style: preserve-3d;
    background: linear-gradient(145deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
}

[data-theme="light"] .project-card {
    background: linear-gradient(145deg, rgba(0,0,0,0.02) 0%, rgba(0,0,0,0.01) 100%);
}

.project-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card:hover { 
    border-color: rgba(0, 240, 255, 0.5); 
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.15); 
    transform: translateY(-5px);
}

[data-theme="light"] .project-card:hover {
    border-color: rgba(0, 119, 255, 0.5); 
    box-shadow: 0 10px 40px rgba(0, 119, 255, 0.15); 
}

/* New Placeholder with gradient & icon */
.project-img-placeholder {
    width: 100%; 
    height: 200px; 
    background: linear-gradient(45deg, rgba(0,0,0,0.3), rgba(0,0,0,0.1));
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: center; 
    align-items: center; 
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

[data-theme="light"] .project-img-placeholder {
    background: linear-gradient(45deg, rgba(0,0,0,0.05), rgba(0,0,0,0.02));
}

/* Add an overlay on hover */
.project-img-placeholder::after {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 240, 255, 0.15);
    opacity: 0;
    transition: opacity 0.4s ease;
}

[data-theme="light"] .project-img-placeholder::after {
    background: rgba(0, 119, 255, 0.15);
}

.project-card:hover .project-img-placeholder::after {
    opacity: 1;
}

/* Animate a "view" button inside placeholder on hover */
.project-view-btn {
    position: absolute;
    z-index: 2;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.6rem 1.2rem;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
}

[data-theme="light"] .project-view-btn {
    background: rgba(255, 255, 255, 0.8);
}

.project-card:hover .project-view-btn {
    opacity: 1;
    transform: translateY(0);
}

.project-info h3 { 
    margin-bottom: 0.75rem; 
    font-size: 1.3rem; 
    transition: color 0.3s ease;
}
.project-card:hover .project-info h3 {
    color: var(--primary-color);
}

.project-info p { 
    color: var(--text-muted); 
    font-size: 0.95rem; 
    line-height: 1.6;
    margin-bottom: 1.5rem; 
    flex-grow: 1; 
}

.project-tags { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 0.5rem; 
    margin-top: auto;
}
.project-tags span { 
    font-size: 0.75rem; 
    font-weight: 600;
    padding: 0.4rem 0.8rem; 
    background: rgba(176, 38, 255, 0.05); 
    border: 1px solid rgba(176, 38, 255, 0.3);
    border-radius: 8px; 
    color: var(--secondary-color); 
    transition: all 0.3s ease;
}
.project-card:hover .project-tags span {
    background: rgba(176, 38, 255, 0.15);
    border-color: var(--secondary-color);
    box-shadow: 0 0 10px rgba(176, 38, 255, 0.2);
}

/* Contact */
.contact-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 2rem; }
.glass-input {
    width: 100%; padding: 1rem 1.25rem;
    background: rgba(128, 128, 128, 0.1);
    border: 1px solid var(--glass-border); border-radius: 12px;
    color: var(--text-color); font-family: var(--font-body);
    transition: all 0.3s; cursor: none;
    font-size: 1rem;
}
.glass-input:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.2); }
[data-theme="light"] .glass-input:focus { box-shadow: 0 0 0 2px rgba(0, 119, 255, 0.2); }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--text-muted); font-size: 0.9rem; }
.info-card h3 { margin-bottom: 0.5rem; color: var(--primary-color); }

.social-links-rich {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-link-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: none;
}

[data-theme="light"] .social-link-item { background: rgba(0, 0, 0, 0.03); }

.social-link-item:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateX(10px);
}

[data-theme="light"] .social-link-item:hover { background: rgba(0, 119, 255, 0.1); }

.social-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

[data-theme="light"] .social-icon { background: rgba(0, 0, 0, 0.05); }

.social-link-item:hover .social-icon {
    background: var(--primary-color);
    color: var(--bg-color);
    transform: scale(1.1) rotate(5deg);
}

.social-text { display: flex; flex-direction: column; }
.social-name { color: var(--text-color); font-weight: 500; font-size: 1.1rem; transition: color 0.3s ease; }
.social-link-item:hover .social-name { color: var(--primary-color); }
.social-handle { color: var(--text-muted); font-size: 0.85rem; }

.glass-footer { text-align: center; padding: 2rem; border-top: 1px solid var(--glass-border); margin-top: 4rem; color: var(--text-muted); }

/* Modal */
.modal {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 1000;
    display: flex; justify-content: center; align-items: center;
    visibility: hidden; opacity: 0; transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal.active { visibility: visible; opacity: 1; }
.modal-backdrop { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.6); backdrop-filter: blur(8px); cursor: none;}
.modal-content { position: relative; width: 90%; max-width: 800px; max-height: 90vh; overflow-y: auto; z-index: 1001; transform: translateY(20px); transition: transform 0.3s ease; }
.modal.active .modal-content { transform: translateY(0); }
.modal-close { position: absolute; top: 1.5rem; right: 1.5rem; background: transparent; border: none; color: var(--text-muted); font-size: 2rem; cursor: none; line-height: 1; transition: color 0.3s; }
.modal-close:hover { color: var(--primary-color); }
.modal-img-placeholder { width: 100%; height: 300px; background: rgba(128,128,128,0.2); border-radius: 8px; display: flex; justify-content: center; align-items: center; color: var(--text-muted); }
.modal-links { display: flex; gap: 1rem; }

/* Animations */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Preloader */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 240, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    z-index: 10000;
    box-shadow: 0 0 10px var(--primary-color);
    transition: width 0.1s;
    pointer-events: none;
}

@media (max-width: 768px) {
    /* Layout Adjustments */
    .section { padding: 4rem 1rem; }
    .container { width: 95%; }

    /* Navigation - Bottom App Bar */
    .glass-nav { 
        padding: 1rem 5%; 
        border-bottom: none; 
    }
    .nav-container { justify-content: space-between; }
    
    .nav-links {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(11, 13, 23, 0.85);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        display: flex;
        justify-content: space-around;
        padding: 0.8rem 0;
        margin: 0;
        border-top: 1px solid var(--glass-border);
        z-index: 1000;
        flex-direction: row;
        border-radius: 20px 20px 0 0;
        box-shadow: 0 -5px 20px rgba(0,0,0,0.2);
    }
    
    [data-theme="light"] .nav-links {
        background: rgba(244, 246, 252, 0.85);
        box-shadow: 0 -5px 20px rgba(0,0,0,0.05);
    }

    .nav-links li { margin: 0; }
    .nav-links a { 
        font-size: 0.85rem; 
        padding: 0.5rem; 
        display: flex;
        flex-direction: column;
        align-items: center;
        font-weight: 500;
    }
    
    .nav-links a::after { display: none; } /* hide underline hover effect */

    /* Add padding to body so bottom nav doesn't hide content */
    body { padding-bottom: 70px; }

    /* Hero Section */
    .hero { flex-direction: column-reverse; text-align: center; padding-top: 100px; gap: 2rem; }
    .hero-actions { justify-content: center; }
    .hero-title { font-size: 2.2rem; line-height: 1.2; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-photo-container { max-width: 250px; }

    /* About Section */
    .about-card { padding: 1.5rem; }
    .about-subtitle-rich { font-size: 1.4rem; }
    .about-features-list li { font-size: 0.95rem; }
    .about-photo-wrapper { max-width: 280px; margin-bottom: 2rem; }

    /* Skills & Projects */
    .skills-grid { gap: 0.8rem; }
    .skill-tag { padding: 0.6rem 1rem; font-size: 0.9rem; }
    .projects-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .project-img-placeholder { height: 180px; }

    /* Contact Section */
    .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .contact-form { padding: 1.5rem; }
    
    /* Global fixes */
    .section-title { font-size: 2rem; }
    .custom-cursor { display: none; } /* disable custom cursor on mobile */
    body, a, button, input, textarea, .logo, .theme-toggle, .lang-select, .skill-tag, .project-card, .modal-close { cursor: auto !important; }
}