/* ==========================================
   PORTFOLIO DESIGN SYSTEM & STYLESHEET
   ========================================== */

/* Design Tokens & Variables */
:root {
    --bg-primary: #0A1128;
    --bg-secondary: #0D1B3E;
    --primary: #00F2FE;
    --accent: #4FACFE;
    --text-main: #E2E8F0;
    --text-muted: #94A3B8;
    --text-white: #FFFFFF;
    --glass-bg: rgba(13, 27, 62, 0.45);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-border-glow: rgba(0, 242, 254, 0.35);
    --shadow-neon: 0 0 25px rgba(0, 242, 254, 0.25);
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Elements */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-white);
    font-weight: 700;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Background Decoration */
.bg-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    opacity: 0.15;
    pointer-events: none;
}

.bg-glow-1 {
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -150px;
    left: -150px;
}

.bg-glow-2 {
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

/* Reusable Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 4.5rem 0;
    position: relative;
}

.alt-bg {
    background-color: rgba(10, 17, 40, 0.5);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

/* Text Highlights */
.text-neon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

/* Glassmorphism Cards */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: var(--transition-smooth);
}

.glass:hover {
    border-color: var(--glass-border-glow);
    box-shadow: var(--shadow-neon), 0 8px 32px 0 rgba(0, 0, 0, 0.4);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-neon);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.btn-icon {
    background: rgba(0, 242, 254, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.btn-icon:hover {
    background: var(--primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon);
}

/* Navbar Float Effect */
.navbar {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    background: rgba(10, 17, 40, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    z-index: 100;
    padding: 0.8rem 2.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: var(--transition-smooth);
}

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

.nav-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-white);
    letter-spacing: -1px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.2rem;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-links a {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.3);
}

.nav-cv-btn {
    background: rgba(0, 242, 254, 0.12) !important;
    border: 1px solid rgba(0, 242, 254, 0.4) !important;
    color: var(--primary) !important;
    padding: 0.35rem 0.9rem !important;
    border-radius: 20px !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.4rem !important;
}

.nav-cv-btn:hover {
    background: var(--primary) !important;
    color: #0A1128 !important;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4) !important;
}

/* Language Switcher Navbar */
.nav-lang-switcher {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 2px 8px;
    gap: 4px;
}

.lang-switch-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    padding: 2px 4px;
    transition: var(--transition-smooth);
    border-radius: 4px;
}

.lang-switch-btn.active,
.lang-switch-btn:hover {
    color: var(--primary);
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
}

.lang-divider {
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.75rem;
}

.nav-toggle {
    display: none;
    font-size: 1.4rem;
    cursor: pointer;
}

/* Hero Section Styles */
.hero-section {
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 5rem 0 2rem 0;
}

.hero-container {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 5rem;
}

.hero-avatar-area {
    position: relative;
    flex-shrink: 0;
}

.avatar-circle {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(13, 27, 62, 0.8) 0%, rgba(10, 17, 40, 0.9) 100%);
    border: 3px solid rgba(0, 242, 254, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(0, 242, 254, 0.2);
}

.hero-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: 50%;
}

.hero-presentation-banner {
    border-radius: 20px;
    padding: 0.8rem;
    margin-bottom: 3.5rem;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 254, 0.15);
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.hero-presentation-img {
    width: 100%;
    height: auto;
    border-radius: 14px;
    display: block;
    object-fit: cover;
}

.avatar-glow {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0.25;
    filter: blur(15px);
    z-index: -1;
}

/* Availability Badge */
.availability-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.2rem;
    padding: 0.45rem 1rem;
    background: rgba(0, 200, 100, 0.1);
    border: 1px solid rgba(0, 200, 100, 0.35);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #00c864;
    letter-spacing: 0.3px;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.availability-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #00c864;
    flex-shrink: 0;
    animation: pulse-green 1.8s ease-in-out infinite;
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 200, 100, 0.5); }
    50%       { box-shadow: 0 0 0 6px rgba(0, 200, 100, 0); }
}

/* Contact Social Buttons */
.contact-social-btns {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1.8rem;
}

.btn-social-contact {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.75rem 1.2rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    text-decoration: none;
}

.linkedin-btn {
    background: rgba(10, 102, 194, 0.12);
    border: 1px solid rgba(10, 102, 194, 0.4);
    color: #4fa3e0;
}

.linkedin-btn:hover {
    background: rgba(10, 102, 194, 0.25);
    border-color: #0A66C2;
    color: #fff;
    transform: translateX(5px);
    box-shadow: 0 4px 20px rgba(10, 102, 194, 0.3);
}

.youtube-btn {
    background: rgba(255, 0, 0, 0.08);
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff6b6b;
}

.youtube-btn:hover {
    background: rgba(255, 0, 0, 0.18);
    border-color: #FF0000;
    color: #fff;
    transform: translateX(5px);
    box-shadow: 0 4px 20px rgba(255, 0, 0, 0.25);
}

.hero-content {
    flex-grow: 1;
}

.hero-tag {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 0.8rem;
    display: inline-block;
}

.hero-title {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    height: 3rem; /* fix size layout shift */
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

.scroll-down {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: var(--text-muted);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: start;
}

.about-card {
    padding: 2.8rem;
    position: sticky;
    top: 6rem;
}

.about-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.about-card p {
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    line-height: 1.6;
}

.personal-info {
    margin-top: 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    font-size: 1.05rem;
}

.info-item i {
    width: 24px;
    font-size: 1.2rem;
}

.about-metrics-block {
    margin-top: 2rem;
    padding-top: 1.8rem;
    border-top: 1px solid var(--glass-border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

.metric-badge-item {
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.15);
    padding: 0.9rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    transition: var(--transition-smooth);
}

.metric-badge-item:hover {
    background: rgba(0, 242, 254, 0.12);
    border-color: rgba(0, 242, 254, 0.35);
    transform: translateY(-2px);
}

.metric-badge-item i {
    font-size: 1.4rem;
}

/* Timeline */
.timeline-container {
    position: relative;
    border-left: 2px solid rgba(255, 255, 255, 0.05);
    padding-left: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.timeline-item {
    padding: 1.8rem;
    position: relative;
}

.timeline-dot {
    position: absolute;
    width: 14px;
    height: 14px;
    background-color: var(--primary);
    border-radius: 50%;
    left: -34px;
    top: 2.2rem;
    box-shadow: 0 0 10px var(--primary);
}

.timeline-date {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.timeline-title {
    font-size: 1.25rem;
    margin-bottom: 0.2rem;
}

.timeline-location {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 0.8rem;
}

.timeline-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Projects Card Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
}

.project-card {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.project-banner {
    width: 100%;
    height: 190px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: var(--transition-smooth);
}

.project-card:hover .project-banner {
    border-color: var(--glass-border-glow);
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.2);
}

.project-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.project-icon {
    font-size: 2.2rem;
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.3px;
}

.project-description {
    color: var(--text-muted);
    font-size: 0.98rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2rem;
}

.project-tags span {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-main);
}

.project-links {
    margin-top: auto;
}

.project-links .btn {
    width: 100%;
    justify-content: center;
}

/* Skills Filter & Tags */
.skills-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 3.5rem;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 0.6rem 1.6rem;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-neon);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.skill-tag {
    padding: 1.5rem;
    font-size: 0.95rem;
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    border-radius: 16px;
    transition: var(--transition-smooth);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.skill-tag:hover {
    border-color: rgba(0, 242, 254, 0.4);
    box-shadow: 0 15px 35px rgba(0, 242, 254, 0.12);
    transform: translateY(-4px);
}

.skill-tag.fade-out {
    display: none !important;
}

.skill-card-icon {
    font-size: 1.8rem;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 0.2rem;
    text-shadow: 0 0 12px rgba(0, 242, 254, 0.4);
}

.skill-card-body h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.skill-card-body p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin: 0;
}

/* Contact Grid & Form */
.contact-grid {
    display: grid;
    grid-template-columns: 0.90fr 1.10fr;
    gap: 4rem;
}

.contact-info {
    padding: 3rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.15);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.3rem;
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.contact-item .label {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: block;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-item .value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-white);
    transition: var(--transition-smooth);
}

.contact-item a.value:hover {
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.contact-form {
    padding: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-group input,
.form-group textarea {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.9rem 1.2rem;
    color: var(--text-white);
    font-family: inherit;
    font-size: 0.98rem;
    transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.05);
    outline: none;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

/* ==========================================
   ANIMATED STATS COUNTER SECTION
   ========================================== */
.stats-section {
    padding: 2.2rem 2rem;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.03) 0%, rgba(13, 27, 62, 0.6) 100%);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    transition: var(--transition-smooth);
    cursor: default;
}

.stat-item:hover {
    border-color: var(--glass-border-glow);
    box-shadow: var(--shadow-neon);
    transform: translateY(-6px);
}

.stat-icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.3rem;
    filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.4));
}

.stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    text-shadow: 0 0 20px rgba(0, 242, 254, 0.4);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    line-height: 1.3;
}

@media (max-width: 992px) {
    .stats-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-number {
        font-size: 1.9rem;
    }
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */
#scrollTopBtn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--bg-primary);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    z-index: 500;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4);
}

#scrollTopBtn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollTopBtn:hover {
    background: #4FACFE;
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 242, 254, 0.6);
}

/* ==========================================
   TECH STACK SECTION
   ========================================== */
.techstack-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.techstack-category {
    padding: 1.8rem;
    border-radius: 18px;
    transition: var(--transition-smooth);
}

.techstack-category:hover {
    border-color: var(--glass-border-glow);
    transform: translateY(-5px);
    box-shadow: var(--shadow-neon);
}

.techstack-cat-header {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 1.2rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--glass-border);
}

.techstack-cat-header i {
    font-size: 1.3rem;
}

.techstack-cat-header h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin: 0;
}

.tech-pills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-pill {
    background: rgba(0, 242, 254, 0.07);
    border: 1px solid rgba(0, 242, 254, 0.2);
    color: var(--primary);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    transition: var(--transition-smooth);
    cursor: default;
}

.tech-pill:hover {
    background: rgba(0, 242, 254, 0.15);
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

@media (max-width: 992px) {
    .techstack-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
    .techstack-grid { grid-template-columns: 1fr; }
}

/* ==========================================
   CERTIFICATIONS SECTION
   ========================================== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.cert-card {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    padding: 1.6rem;
    border-radius: 16px;
    transition: var(--transition-smooth);
}

.cert-card:hover {
    border-color: var(--glass-border-glow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-neon);
}

.cert-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--primary);
    flex-shrink: 0;
    filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.3));
}

.cert-body { flex: 1; }

.cert-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.25);
    padding: 0.2rem 0.6rem;
    border-radius: 10px;
    margin-bottom: 0.5rem;
}

.cert-body h4 {
    font-size: 1rem;
    color: var(--text-white);
    margin: 0.3rem 0 0.2rem 0;
}

.cert-body p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0 0 0.3rem 0;
    font-weight: 600;
}

.cert-body small {
    font-size: 0.78rem;
    color: rgba(148, 163, 184, 0.7);
    line-height: 1.4;
}

@media (max-width: 768px) {
    .certs-grid { grid-template-columns: 1fr; }
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 2.5rem 0;
    background: rgba(7, 12, 29, 0.8);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 1.8rem;
}

.social-links a {
    font-size: 1.3rem;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.social-links a:hover {
    color: var(--primary);
    transform: scale(1.15);
}

/* Hero Social Icons Row */
.hero-social-icons {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.8rem;
    align-items: center;
}

.hero-social-icons a {
    font-size: 1.6rem;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.hero-social-icons a:hover {
    color: var(--primary);
    transform: translateY(-4px) scale(1.2);
    filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.5));
}

.hero-social-icons a.linkedin-link:hover {
    color: #0A66C2;
    filter: drop-shadow(0 0 8px rgba(10, 102, 194, 0.5));
}

.hero-social-icons a.youtube-link:hover {
    color: #FF0000;
    filter: drop-shadow(0 0 8px rgba(255, 0, 0, 0.5));
}

.social-links a.linkedin-link:hover {
    color: #0A66C2;
    transform: scale(1.15);
}

.social-links a.youtube-link:hover {
    color: #FF0000;
    transform: scale(1.15);
}

/* Fade In Animations (Safe fallbacks) */
.animate-on-scroll {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .navbar {
        padding: 0.8rem 1.5rem;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
        padding-top: 4rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-description {
        margin: 0 auto 2.5rem auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 5rem 0;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .avatar-circle {
        width: 220px;
        height: 220px;
    }

    .avatar-initials {
        font-size: 3.5rem;
    }

    .nav-links {
        display: none; /* simple mobile drawer can be added or standard toggle */
    }

    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

/* ==========================================
   INTERACTIVE PROJECT MODALS & ARCHITECTURE
   ========================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 10, 25, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2.5rem;
    position: relative;
    border-radius: 24px;
    transform: scale(0.92) translateY(20px);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    background: linear-gradient(135deg, rgba(13, 27, 62, 0.95) 0%, rgba(10, 17, 40, 0.98) 100%);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--shadow-neon);
}

.modal-overlay.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    z-index: 10;
}

.modal-close:hover {
    background: var(--primary);
    color: var(--bg-primary);
    transform: rotate(90deg);
    box-shadow: var(--shadow-neon);
}

.modal-header {
    margin-bottom: 2rem;
    padding-right: 3rem;
}

.modal-badge {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.modal-title {
    font-size: 2.2rem;
    margin-bottom: 0.4rem;
}

.modal-subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Modal Content Grid & Architecture Flow */
.modal-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.arch-section {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.8rem;
}

.arch-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--primary);
}

/* Pipeline Architecture Flow Steps */
.pipeline-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    position: relative;
}

.pipeline-step {
    background: rgba(10, 17, 40, 0.8);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 12px;
    padding: 1.2rem;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.pipeline-step-num {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pipeline-step-title {
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--text-white);
}

.pipeline-step-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.impact-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.impact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    font-size: 0.95rem;
    color: var(--text-main);
}

.impact-list li i {
    color: var(--primary);
    margin-top: 0.2rem;
}

.tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.tech-pills span {
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.25);
    color: var(--primary);
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-links-row {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.project-links-row .btn {
    flex: 1;
    justify-content: center;
}

@media (max-width: 768px) {
    .modal-container {
        padding: 1.5rem;
    }
    .modal-title {
        font-size: 1.7rem;
    }
    .pipeline-flow {
        grid-template-columns: 1fr;
    }
    .project-links-row {
        flex-direction: column;
    }
}

/* ==========================================
   PODCAST HUB & MULTI-TRACK PLAYLIST STYLES
   ========================================== */
.podcast-hub-wrapper {
    margin: 0 auto 3.5rem auto;
    max-width: 1100px;
    padding: 2rem 2.2rem;
    border: 1px solid rgba(0, 242, 254, 0.35);
    border-radius: 24px;
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.92), rgba(20, 32, 56, 0.98));
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 25px rgba(0, 242, 254, 0.15);
}

.podcast-hub-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
    flex-wrap: wrap;
    gap: 1rem;
}

.podcast-hub-title-badge {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: #00F2FE;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.podcast-hub-counter {
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid rgba(0, 242, 254, 0.25);
    color: #00F2FE;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
}

.podcast-main-player {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 2rem;
    align-items: center;
    background: rgba(0, 242, 254, 0.04);
    border: 1px solid rgba(0, 242, 254, 0.2);
    padding: 1.6rem 2rem;
    border-radius: 18px;
    margin-bottom: 2rem;
}

.podcast-main-info h4 {
    color: #FFFFFF;
    font-size: 1.2rem;
    font-family: 'Outfit', sans-serif;
    margin: 0.4rem 0 0.3rem 0;
}

.podcast-main-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.podcast-main-controls audio {
    width: 100%;
    height: 48px;
    border-radius: 25px;
    outline: none;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.4));
}

.podcast-playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.2rem;
}

.podcast-track-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 1.1rem 1.3rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.podcast-track-card:hover {
    background: rgba(0, 242, 254, 0.08);
    border-color: rgba(0, 242, 254, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.podcast-track-card.active {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(79, 172, 254, 0.15) 100%);
    border: 1.5px solid #00F2FE;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.25);
}

.track-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.6rem;
}

.track-lang-tag {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    background: rgba(0, 242, 254, 0.12);
    color: #00F2FE;
    border: 1px solid rgba(0, 242, 254, 0.25);
}

.track-card-title {
    color: #FFFFFF;
    font-size: 0.96rem;
    font-weight: 700;
    margin: 0 0 0.4rem 0;
    line-height: 1.35;
}

.track-card-desc {
    color: var(--text-muted);
    font-size: 0.83rem;
    line-height: 1.4;
    margin: 0 0 0.8rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.track-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #00F2FE;
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
}

@media (max-width: 868px) {
    .podcast-main-player {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
}