/*
 * Modern Portfolio Stylesheet
 * Author: Shiva Kumar Nadiminti
 * Design: Dark theme with glassmorphism and modern animations
 */

/* ============================================
   CSS Variables & Root Styles
   ============================================ */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: rgba(26, 26, 36, 0.6);
    --bg-glass: rgba(255, 255, 255, 0.03);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #a855f7;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Typography */
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Syne', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
}

/* Light theme variables */
[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-glass: rgba(0, 0, 0, 0.02);
    
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a5a;
    --text-muted: #8a8a9a;
    
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
}

/* Light theme specific overrides */
[data-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .navbar.scrolled .nav-link {
    color: #1a1a2e;
}

[data-theme="light"] .navbar.scrolled .nav-link:hover {
    color: var(--accent-primary);
}

[data-theme="light"] .navbar.scrolled .logo {
    color: #1a1a2e;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent-primary);
    color: white;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--accent-primary);
    font-weight: 500;
}

/* ============================================
   Cursor Glow Effect
   ============================================ */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    opacity: 0;
}

body:hover .cursor-glow {
    opacity: 1;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

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

.btn-outline:hover {
    background: var(--bg-glass);
    border-color: var(--border-hover);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn i {
    font-size: 18px;
    transition: var(--transition-normal);
}

.btn:hover i {
    transform: translateX(4px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent-tertiary);
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -50px) scale(1.1); }
    50% { transform: translate(-30px, 30px) scale(0.9); }
    75% { transform: translate(-50px, -30px) scale(1.05); }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-family: var(--font-display);
    margin-bottom: 24px;
}

.hero-title .greeting {
    display: block;
    font-size: 20px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hero-title .name {
    display: block;
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 12px;
}

.hero-title .role-wrapper {
    display: inline-block;
    position: relative;
}

.hero-title .role-text {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 22px;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    transform: translateY(-4px);
}

/* Hero Image */
.hero-image {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.image-wrapper {
    position: relative;
    width: 380px;
    height: 480px;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.image-border {
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    background: var(--accent-gradient) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: rgba(26, 26, 36, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    animation: floatCard 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 20px;
    color: var(--accent-primary);
}

.card-1 {
    top: 20%;
    left: -60px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 20%;
    right: -40px;
    animation-delay: -3s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 13px;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator i {
    font-size: 24px;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.2;
}

/* ============================================
   About Section - Bento Grid
   ============================================ */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

.bento-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.bento-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.about-main {
    grid-column: span 8;
}

.about-text {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--text-primary);
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

.skills-card {
    grid-column: span 4;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.card-title i {
    font-size: 22px;
    color: var(--accent-primary);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.skill-tag:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.location-card {
    grid-column: span 4;
    position: relative;
    overflow: hidden;
}

.location-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    font-size: 24px;
    color: white;
    margin-bottom: 16px;
}

.location-text {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.location-visual {
    position: absolute;
    right: 20px;
    bottom: 20px;
}

.pulse-ring {
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: pulseRing 3s ease-out infinite;
    opacity: 0;
}

.pulse-ring.delay-1 { animation-delay: 1s; }
.pulse-ring.delay-2 { animation-delay: 2s; }

@keyframes pulseRing {
    0% { transform: scale(0.5); opacity: 1; }
    100% { transform: scale(2); opacity: 0; }
}

.education-card {
    grid-column: span 4;
}

.education-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.education-item {
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.education-item .degree {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.education-item .school {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
}

.education-item .year {
    display: block;
    font-size: 13px;
    color: var(--accent-primary);
    margin-top: 8px;
}

.tools-card {
    grid-column: span 4;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.tool-item {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 26px;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.tool-item:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    transform: scale(1.1);
}

/* ============================================
   Experience Section - Timeline
   ============================================ */
.experience {
    background: var(--bg-primary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-tertiary));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    padding-left: 48px;
    padding-bottom: 48px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -7px;
    top: 0;
}

.marker-dot {
    width: 16px;
    height: 16px;
    background: var(--bg-primary);
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    transition: var(--transition-normal);
}

.timeline-item:hover .marker-dot {
    background: var(--accent-primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.timeline-content {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    transform: translateX(8px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.job-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.company {
    font-size: 16px;
    color: var(--accent-primary);
    font-weight: 500;
}

.timeline-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.timeline-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-muted);
}

.timeline-meta i {
    font-size: 16px;
}

.job-highlights {
    margin-bottom: 16px;
    padding-left: 20px;
}

.job-highlights li {
    position: relative;
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    list-style: disc;
}

.job-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.job-tags span {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ============================================
   Projects Section
   ============================================ */
.projects {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 80px;
}

.project-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
}

.project-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.project-card.featured .project-image {
    aspect-ratio: auto;
    height: 100%;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 50%;
    color: white;
    font-size: 24px;
    transform: scale(0.8);
    transition: var(--transition-normal);
}

.project-card:hover .project-link {
    transform: scale(1);
}

.project-content {
    padding: 28px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.project-tags span {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-primary);
}

.project-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--accent-primary);
}

.project-btn i {
    transition: var(--transition-normal);
}

.project-btn:hover i {
    transform: translateX(4px);
}

/* Certifications */
.certifications-section {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.subsection-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 32px;
}

.subsection-title i {
    font-size: 28px;
    color: var(--accent-primary);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.cert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
}

.cert-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.cert-card img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.cert-info {
    padding: 16px;
    text-align: center;
}

.cert-name {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.cert-type {
    font-size: 12px;
    color: var(--text-muted);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--bg-primary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 24px;
    color: var(--accent-primary);
}

.contact-text .label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-text a,
.contact-text span {
    font-size: 16px;
    color: var(--text-primary);
}

.contact-text a:hover {
    color: var(--accent-primary);
}

.contact-social {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.social-label {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.contact-social .social-links {
    display: flex;
    gap: 12px;
}

.contact-social .social-links a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 22px;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.contact-social .social-links a:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 16px;
    transition: var(--transition-normal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.btn-submit {
    width: 100%;
    padding: 18px;
    font-size: 16px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.footer-brand .logo-text {
    font-size: 32px;
    margin-bottom: 8px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 15px;
    color: var(--text-secondary);
}

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

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 20px;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.footer-social a:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-bottom i {
    color: var(--error);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    color: white;
    font-size: 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

/* ============================================
   Animations (AOS-like)
   ============================================ */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-down"] {
    transform: translateY(-30px);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0);
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 1200px) {
    .hero-image {
        right: 2%;
    }
    
    .image-wrapper {
        width: 320px;
        height: 400px;
    }
}

@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-social {
        justify-content: center;
    }
    
    .hero-image {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        margin-top: 60px;
    }
    
    .floating-card {
        display: none;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .about-main {
        grid-column: span 6;
    }
    
    .skills-card,
    .location-card,
    .education-card,
    .tools-card {
        grid-column: span 3;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card.featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .about-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-main,
    .skills-card,
    .location-card,
    .education-card,
    .tools-card {
        grid-column: span 1;
    }
    
    .timeline::before {
        left: 8px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .timeline-marker {
        left: 0;
    }
    
    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .timeline-meta {
        align-items: flex-start;
        flex-direction: row;
        gap: 16px;
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title .name {
        font-size: 36px;
    }
    
    .hero-title .role-text {
        font-size: 24px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn-lg {
        width: 100%;
    }
    
    .image-wrapper {
        width: 280px;
        height: 350px;
    }
    
    .bento-card {
        padding: 24px;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile Navigation Overlay */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 20px;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu .nav-link {
        font-size: 24px;
        padding: 16px 32px;
    }
}

/* ============================================
   Founded Product Section - Trvalon Showcase
   ============================================ */
.founded-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.trvalon-showcase {
    position: relative;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.05) 0%, rgba(251, 146, 60, 0.02) 50%, var(--bg-card) 100%);
    border: 1px solid var(--border-color);
    border-radius: 32px;
    overflow: hidden;
}

.trvalon-showcase::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.trvalon-showcase::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.showcase-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 60px;
    padding: 60px;
    position: relative;
    z-index: 1;
    align-items: center;
}

/* Phone Mockup */
.app-preview {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 500px;
}

.phone-mockup {
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.phone-frame {
    width: 240px;
    height: 480px;
    background: #1a1a24;
    border-radius: 36px;
    padding: 10px;
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: var(--transition-slow);
}

.trvalon-showcase:hover .phone-frame {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 28px;
    overflow: hidden;
    padding: 20px 16px;
}

.phone-screen.screenshot {
    padding: 0;
    background: #fff;
}

.phone-screen.screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    border-radius: 28px;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.trvalon-logo-icon {
    width: 32px;
    height: 32px;
}

.trvalon-logo-icon svg {
    width: 100%;
    height: 100%;
}

.app-name {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: #1a1a24;
}

.app-name .orange {
    color: #F97316;
}

.app-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.app-tabs .tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    border-radius: 12px;
    color: #64748b;
    background: #f1f5f9;
    transition: var(--transition-fast);
}

.app-tabs .tab.active {
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    color: white;
}

.app-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mini-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.card-avatar {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

.card-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.card-line {
    height: 10px;
    background: #e2e8f0;
    border-radius: 5px;
}

.card-line.short {
    width: 60%;
    height: 8px;
}

.app-glow {
    position: absolute;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.25) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    filter: blur(50px);
    pointer-events: none;
}

/* Real Phone Mockup with Screenshot */
.phone-mockup-real {
    position: relative;
    width: 280px;
    height: 580px;
    background: #1a1a24;
    border-radius: 50px;
    padding: 14px;
    box-shadow: 
        0 50px 100px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 2px 0 rgba(255, 255, 255, 0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: var(--transition-slow);
    z-index: 2;
}

.trvalon-showcase:hover .phone-mockup-real {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.phone-notch {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 30px;
    background: #1a1a24;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-notch::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: #333;
    border-radius: 3px;
}

.phone-screen-real {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 40px;
    overflow: hidden;
}

.phone-screen-real img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

/* Showcase Info */
.showcase-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.founder-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.15) 0%, rgba(251, 146, 60, 0.1) 100%);
    color: #F97316;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
    width: fit-content;
    border: 1px solid rgba(249, 115, 22, 0.2);
}

.founder-badge i {
    font-size: 18px;
}

.brand-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.brand-logo-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 10px 30px rgba(249, 115, 22, 0.3);
}

.brand-logo-icon i {
    font-size: 32px;
    color: white;
}

.brand-logo-img {
    width: 70px;
    height: 70px;
    flex-shrink: 0;
}

.brand-logo-img.large {
    width: 180px;
    height: 180px;
}

.brand-logo-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 52px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.brand-name .highlight {
    color: #F97316;
}

.brand-tagline {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-style: italic;
    opacity: 0.9;
}

.brand-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

/* Feature Highlights */
.feature-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--bg-glass);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.highlight-item:hover {
    border-color: rgba(249, 115, 22, 0.3);
    background: rgba(249, 115, 22, 0.05);
}

.highlight-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.15) 0%, rgba(251, 146, 60, 0.1) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.highlight-icon i {
    font-size: 20px;
    color: #F97316;
}

.highlight-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.highlight-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.highlight-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* App Metrics */
.app-metrics {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    padding: 20px 24px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.metric {
    display: flex;
    align-items: center;
    gap: 12px;
}

.metric-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-icon i {
    font-size: 22px;
    color: white;
}

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-appstore {
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    color: white;
    padding: 14px 28px;
    border-radius: 14px;
    text-decoration: none;
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-appstore:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cta-appstore i {
    font-size: 32px;
}

.cta-text {
    display: flex;
    flex-direction: column;
}

.cta-small {
    font-size: 10px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cta-big {
    font-size: 18px;
    font-weight: 600;
}

.cta-website {
    display: flex;
    align-items: center;
    gap: 10px;
    background: transparent;
    color: #F97316;
    padding: 14px 28px;
    border-radius: 14px;
    text-decoration: none;
    border: 2px solid #F97316;
    transition: var(--transition-normal);
    font-weight: 600;
}

.cta-website:hover {
    background: #F97316;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(249, 115, 22, 0.3);
}

.cta-website i {
    font-size: 20px;
}

/* Founded Section Responsive */
@media (max-width: 1024px) {
    .showcase-content {
        grid-template-columns: 1fr;
        gap: 48px;
        padding: 40px;
    }
    
    .app-preview {
        order: 2;
    }
    
    .showcase-info {
        order: 1;
        text-align: center;
        align-items: center;
    }
    
    .brand-header {
        justify-content: center;
    }
    
    .brand-description {
        text-align: center;
    }
    
    .feature-highlights {
        max-width: 500px;
    }
    
    .app-metrics {
        justify-content: center;
    }
    
    .cta-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .showcase-content {
        padding: 32px 24px;
    }
    
    .phone-frame {
        width: 220px;
        height: 440px;
        transform: none;
    }
    
    .brand-name {
        font-size: 40px;
    }
    
    .feature-highlights {
        grid-template-columns: 1fr;
    }
    
    .app-metrics {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-appstore,
    .cta-website {
        justify-content: center;
        width: 100%;
    }
}

@media (max-width: 480px) {
    .brand-header {
        flex-direction: column;
        gap: 12px;
    }
    
    .brand-name {
        font-size: 36px;
    }
    
    .highlight-item {
        padding: 12px;
    }
}