/* ==========================================
   ULTRA-MODERN PORTFOLIO - REVOLUTIONARY DESIGN
   Split-Screen | Bento Grid | Horizontal Scroll
   ========================================== */

:root {
    /* Color Palette - Refined & Mature */
    --primary: #4f5ba9;
    --primary-dark: #3d4685;
    --primary-light: #6b73c1;
    --accent: #8b5cf6;
    --accent-dark: #7c3aed;
    --dark: #0a0e1a;
    --dark-secondary: #1a1f35;
    --dark-tertiary: #2a3148;
    --light: #f8fafc;
    --light-secondary: #cbd5e1;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --success: #059669;
    --warning: #d97706;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --glow: 0 0 20px rgba(79, 91, 169, 0.2);

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==========================================
   GLOBAL RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--accent));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ==========================================
   SIDE NAVIGATION - REVOLUTIONARY VERTICAL NAV
   ========================================== */
.side-nav {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 80px;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    transition: width var(--transition-base);
}

.side-nav:hover {
    width: 240px;
}

.nav-logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 3rem;
    cursor: pointer;
    transition: all var(--transition-bounce);
}

.nav-logo:hover {
    transform: rotate(360deg) scale(1.1);
    box-shadow: var(--glow);
}

.nav-items {
    list-style: none;
    width: 100%;
    flex: 1;
}

.nav-item {
    position: relative;
    margin: 0.5rem 0;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    color: var(--light-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-item a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.nav-item a:hover::before,
.nav-item.active a::before {
    transform: scaleY(1);
}

.nav-item a:hover,
.nav-item.active a {
    color: white;
    background: rgba(99, 102, 241, 0.1);
}

.nav-icon {
    font-size: 1.3rem;
    min-width: 40px;
    text-align: center;
}

.nav-text {
    opacity: 0;
    white-space: nowrap;
    transition: opacity var(--transition-base);
    font-weight: 500;
}

.side-nav:hover .nav-text {
    opacity: 1;
}

.nav-social {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-secondary);
    font-size: 1.2rem;
    transition: all var(--transition-base);
    border-radius: 10px;
}

.social-icon:hover {
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transform: translateY(-3px);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1001;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.mobile-menu-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--glow);
}

/* ==========================================
   MAIN CONTENT WRAPPER
   ========================================== */
.main-content {
    margin-left: 80px;
    min-height: 100vh;
}

/* ==========================================
   HERO SECTION - SPLIT SCREEN DESIGN
   ========================================== */
.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Animated Background Orbs */
.hero-split::before,
.hero-split::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s infinite;
}

.hero-split::before {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -250px;
    left: -250px;
}

.hero-split::after {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -200px;
    right: -200px;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4rem;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(79, 91, 169, 0.12);
    border: 1px solid rgba(79, 91, 169, 0.25);
    border-radius: 50px;
    color: var(--primary-light);
    font-size: 0.9rem;
    font-weight: 600;
    width: fit-content;
    margin-bottom: 2rem;
    animation: slideDown 0.6s ease-out;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, white, var(--light-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: slideUp 0.8s ease-out;
}

.hero-gradient-text {
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--light-secondary);
    max-width: 600px;
    margin-bottom: 3rem;
    line-height: 1.8;
    animation: slideUp 0.8s ease-out 0.2s both;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: slideUp 0.8s ease-out 0.4s both;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    animation: slideUp 0.8s ease-out 0.6s both;
}

.stat-item {
    text-align: left;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.stat-label {
    color: var(--light-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Hero Right - Image with 3D Card */
.hero-right {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    position: relative;
    z-index: 2;
}

.hero-image-card {
    position: relative;
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    animation: slideRight 1s ease-out;
}

.image-frame {
    width: 100%;
    height: 100%;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 8px;
    transform-style: preserve-3d;
    transition: transform var(--transition-slow);
}

.image-frame:hover {
    transform: rotateY(10deg) rotateX(5deg) scale(1.02);
}

.image-inner {
    width: 100%;
    height: 100%;
    border-radius: 24px;
    overflow: hidden;
    position: relative;
}

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

.image-frame:hover .image-inner img {
    transform: scale(1.1);
}

/* Floating Info Cards */
.floating-card {
    position: absolute;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    animation: floatCard 3s ease-in-out infinite;
    z-index: 10;
}

.floating-card-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.floating-card-2 {
    bottom: 15%;
    left: -10%;
    animation-delay: -1.5s;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.card-subtitle {
    color: var(--light-secondary);
    font-size: 0.9rem;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==========================================
   BENTO GRID - ABOUT SECTION (REDESIGNED)
   ========================================== */
.bento-section {
    padding: 8rem 4rem;
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
}

.bento-section::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0.15;
    filter: blur(80px);
    pointer-events: none;
}

.bento-section::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0.15;
    filter: blur(80px);
    pointer-events: none;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    opacity: 0.6;
}

.section-subtitle {
    color: var(--light-secondary);
    font-size: 1.3rem;
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: minmax(180px, auto);
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.bento-item {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.9) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 30px;
    padding: 2.5rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.bento-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition-slow);
}

.bento-item::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 30px;
    padding: 2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.bento-item:hover::before {
    opacity: 1;
    transform: scale(1);
}

.bento-item:hover::after {
    opacity: 0.6;
}

.bento-item:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
    border-color: rgba(99, 102, 241, 0.3);
}

/* Grid Layout Variations */
.bento-large {
    grid-column: span 6;
    grid-row: span 2;
}

.bento-wide {
    grid-column: span 6;
}

.bento-tall {
    grid-column: span 4;
    grid-row: span 2;
}

.bento-item:nth-child(1) {
    /* Large Education Card */
    grid-column: span 7;
    grid-row: span 2;
}

.bento-item:nth-child(2) {
    /* My Approach Card */
    grid-column: span 5;
}

.bento-item:nth-child(3) {
    /* Current Focus Card */
    grid-column: span 5;
}

.bento-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.bento-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 18px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
    color: white;
    transition: all var(--transition-base);
}

.bento-item:hover .bento-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
}

.bento-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1.25rem;
    color: white;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.bento-text {
    color: rgba(226, 232, 240, 0.9);
    line-height: 1.8;
    flex: 1;
    font-size: 1.05rem;
}

.bento-text strong {
    color: var(--primary-light);
    font-weight: 700;
}

.bento-text br {
    line-height: 2.5;
}

.bento-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-light);
    font-weight: 700;
    margin-top: 1.5rem;
    text-decoration: none;
    transition: all var(--transition-base);
    padding: 0.75rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    width: fit-content;
}

.bento-link:hover {
    gap: 1.25rem;
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    transform: translateX(5px);
}

.bento-link i {
    transition: transform var(--transition-base);
}

.bento-link:hover i {
    transform: translateX(5px);
}

/* ==========================================
   HORIZONTAL SCROLL - TECH STACK
   ========================================== */
.horizontal-section {
    padding: 6rem 0;
    overflow: hidden;
    background: var(--dark-secondary);
}

.scroll-container {
    display: flex;
    gap: 2rem;
    padding: 2rem 4rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--dark);
}

.scroll-container::-webkit-scrollbar {
    height: 8px;
}

.tech-card {
    flex: 0 0 280px;
    height: 350px;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2.5rem;
    scroll-snap-align: start;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, var(--primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-slow);
    animation: rotate 3s linear infinite;
    animation-play-state: paused;
}

.tech-card:hover::before {
    opacity: 0.1;
    animation-play-state: running;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.tech-card:hover {
    transform: scale(1.05) translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl), var(--glow);
}

.tech-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.tech-icon i,
.tech-icon img {
    transition: transform var(--transition-bounce);
}

.tech-card:hover .tech-icon i,
.tech-card:hover .tech-icon img {
    transform: rotateY(360deg);
}

.tech-icon img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.tech-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
    position: relative;
    z-index: 2;
}

.tech-level {
    color: var(--light-secondary);
    font-size: 0.9rem;
    position: relative;
    z-index: 2;
}

/* ==========================================
   EXPERIENCE TIMELINE - MODERN CARDS
   ========================================== */
.experience-section {
    padding: 6rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline {
    position: relative;
}

.timeline-item {
    margin-bottom: 4rem;
    position: relative;
    padding-left: 4rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: -4rem;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-dot {
    position: absolute;
    left: -8px;
    top: 8px;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--dark);
    box-shadow: 0 0 0 4px var(--primary);
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% {
        box-shadow: 0 0 0 0 var(--primary);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.timeline-card {
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all var(--transition-base);
}

.timeline-card:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.timeline-company {
    flex: 1;
}

.company-name {
    font-size: 0.9rem;
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.role-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.timeline-date {
    color: var(--light-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timeline-description {
    color: var(--light-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.timeline-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 8px;
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-base);
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* ==========================================
   PROJECTS - MASONRY GRID
   ========================================== */
.projects-section {
    padding: 6rem 4rem;
    background: var(--dark-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.project-card {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-xl), var(--glow);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

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

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(15, 23, 42, 0.9));
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 6px;
    color: var(--primary-light);
    font-size: 0.75rem;
    font-weight: 600;
}

.project-content {
    padding: 2rem;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--light-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-base);
}

.project-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

/* ==========================================
   ACHIEVEMENTS - HACKATHONS & AWARDS
   ========================================== */
.achievements-section {
    padding: 6rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--dark);
}

.achievements-grid {
    display: grid;
    gap: 1.5rem;
}

.achievement-card {
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.achievement-card:hover {
    transform: translateY(-2px);
    border-color: rgba(99, 102, 241, 0.4);
    background: rgba(30, 41, 59, 0.7);
}

.achievement-main {
    padding: 2rem;
}

.achievement-header {
    margin-bottom: 1.25rem;
}

.achievement-title-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.achievement-title {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 700;
    color: var(--light);
    margin: 0;
}

.achievement-badge {
    padding: 0.35rem 0.85rem;
    background: rgba(234, 179, 8, 0.15);
    border: 1px solid rgba(234, 179, 8, 0.3);
    border-radius: 6px;
    color: #fbbf24;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.achievement-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--light-secondary);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.achievement-team,
.achievement-date,
.achievement-role-label {
    color: var(--light-secondary);
}

.meta-divider {
    color: rgba(255, 255, 255, 0.2);
}

.achievement-description {
    color: rgba(248, 250, 252, 0.85);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.achievement-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

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

.tech-badge {
    padding: 0.4rem 0.75rem;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 6px;
    color: var(--primary-light);
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.4);
}

.achievement-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-light);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.achievement-link:hover {
    color: var(--primary);
    gap: 0.75rem;
}

.achievement-link i {
    font-size: 0.85rem;
    transition: transform var(--transition-fast);
}

.achievement-link:hover i {
    transform: translateX(3px);
}

/* ==========================================
   CERTIFICATES - CARD FLIP
   ========================================== */
.certificates-section {
    padding: 6rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.certificate-flip {
    perspective: 1000px;
    height: 400px;
}

.certificate-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.certificate-flip:hover .certificate-inner {
    transform: rotateY(180deg);
}

.certificate-front,
.certificate-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 20px;
    overflow: hidden;
}

.certificate-front {
    background: rgba(30, 41, 59, 0.5);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.certificate-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.certificate-back {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    text-align: center;
}

.certificate-back h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: white;
}

.certificate-back p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 4rem 4rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--light-secondary);
    text-decoration: none;
    padding: 0.75rem 0;
    transition: all var(--transition-base);
}

.footer-link:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--light-secondary);
}

/* ==========================================
   SCROLL TO TOP
   ========================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    border-radius: 15px;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), var(--glow);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

/* Large Tablets */
@media (max-width: 1200px) {
    .bento-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 1.5rem;
    }

    .bento-item:nth-child(1) {
        grid-column: span 6;
        grid-row: span 1;
    }

    .bento-item:nth-child(2) {
        grid-column: span 6;
    }

    .bento-item:nth-child(3) {
        grid-column: span 6;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablets & Small Laptops */
@media (max-width: 968px) {
    .side-nav {
        transform: translateX(-100%);
        width: 280px;
        box-shadow: 10px 0 50px rgba(0, 0, 0, 0.5);
    }

    .side-nav.active {
        transform: translateX(0);
    }

    .side-nav .nav-text {
        opacity: 1;
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Hero Adjustments */
    .hero-split {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 80px;
    }

    .hero-left,
    .hero-right {
        padding: 3rem 2rem;
    }

    .hero-left {
        text-align: center;
        display: flex;
        align-items: center;
    }

    .hero-badge {
        margin: 0 auto 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .hero-cta-group {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
        gap: 2rem;
        flex-wrap: wrap;
    }

    .hero-right {
        order: -1;
    }

    .hero-image-card {
        max-width: 350px;
        margin: 0 auto;
    }

    .floating-card-1,
    .floating-card-2 {
        display: none;
    }

    /* Sections */
    .bento-section,
    .experience-section,
    .projects-section,
    .achievements-section,
    .certificates-section,
    .horizontal-section {
        padding: 4rem 1.5rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .projects-grid,
    .achievements-grid,
    .certificates-grid {
        grid-template-columns: 1fr;
    }

    /* Timeline */
    .timeline-item {
        padding-left: 3rem;
    }

    .timeline-card {
        padding: 2rem;
    }

    /* Scroll container */
    .scroll-container {
        padding: 2rem 1.5rem;
    }
}

/* Mobile Devices */
@media (max-width: 640px) {
    /* Mobile Menu */
    .mobile-menu-toggle {
        width: 45px;
        height: 45px;
        top: 1rem;
        right: 1rem;
    }

    .side-nav {
        width: 100%;
        max-width: 280px;
    }

    /* Hero Section */
    .hero-split {
        padding-top: 70px;
    }

    .hero-left,
    .hero-right {
        padding: 2rem 1.25rem;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.6;
    }

    .hero-cta-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
    }

    .hero-stats {
        flex-direction: row;
        gap: 1rem;
        margin-top: 2.5rem;
    }

    .stat-item {
        flex: 1;
        text-align: center;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .hero-image-card {
        max-width: 280px;
    }

    .image-frame {
        border-radius: 20px;
        padding: 5px;
    }

    /* Sections */
    .bento-section,
    .experience-section,
    .projects-section,
    .achievements-section,
    .certificates-section,
    .horizontal-section {
        padding: 3rem 1rem;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Bento Grid */
    .bento-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
        gap: 1.25rem;
    }

    .bento-item,
    .bento-item:nth-child(1),
    .bento-item:nth-child(2),
    .bento-item:nth-child(3) {
        grid-column: span 1;
        grid-row: span 1;
        min-height: 220px;
        padding: 2rem;
        border-radius: 24px;
    }

    .bento-icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
        margin-bottom: 1.25rem;
        border-radius: 14px;
    }

    .bento-title {
        font-size: 1.4rem;
    }

    .bento-text {
        font-size: 1rem;
    }

    .bento-link {
        padding: 0.65rem 1.25rem;
        font-size: 0.95rem;
    }

    /* Achievements */
    .achievement-main {
        padding: 1.5rem;
    }

    .achievement-footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .achievement-link {
        width: 100%;
        justify-content: center;
    }

    /* Tech Stack */
    .scroll-container {
        padding: 1.5rem 1rem;
        gap: 1rem;
    }

    .tech-card {
        flex: 0 0 220px;
        height: 280px;
        padding: 2rem 1.5rem;
    }

    .tech-icon {
        font-size: 3.5rem;
        margin-bottom: 1rem;
    }

    .tech-icon img {
        width: 60px;
        height: 60px;
    }

    .tech-name {
        font-size: 1.1rem;
    }

    /* Experience Timeline */
    .timeline-item {
        padding-left: 2rem;
        margin-bottom: 3rem;
    }

    .timeline-item::before {
        bottom: -3rem;
    }

    .timeline-card {
        padding: 1.5rem;
    }

    .timeline-header {
        flex-direction: column;
        gap: 0.75rem;
    }

    .role-title {
        font-size: 1.25rem;
    }

    .timeline-description {
        font-size: 0.95rem;
    }

    .timeline-skills {
        gap: 0.5rem;
    }

    .skill-tag {
        font-size: 0.8rem;
        padding: 0.4rem 0.75rem;
    }

    /* Projects */
    .project-card {
        border-radius: 16px;
    }

    .project-image {
        height: 200px;
    }

    .project-content {
        padding: 1.5rem;
    }

    .project-title {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .project-description {
        font-size: 0.95rem;
        margin-bottom: 1.25rem;
    }

    .project-links {
        flex-direction: column;
        gap: 0.75rem;
    }

    .project-link {
        width: 100%;
        justify-content: center;
        padding: 0.625rem 1.25rem;
    }

    /* Certificates */
    .certificates-grid {
        gap: 1.5rem;
    }

    .certificate-flip {
        height: 320px;
    }

    .certificate-back h3 {
        font-size: 1.5rem;
    }

    .certificate-back p {
        font-size: 0.95rem;
    }

    /* Footer */
    .footer {
        padding: 3rem 1rem 1.5rem;
    }

    .footer-content {
        gap: 2rem;
        margin-bottom: 2rem;
    }

    .footer-section h3 {
        font-size: 1.15rem;
    }

    .footer-link {
        font-size: 0.9rem;
        padding: 0.5rem 0;
    }

    .footer-bottom {
        font-size: 0.85rem;
        padding-top: 1.5rem;
    }

    /* Scroll to top */
    .scroll-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
        border-radius: 12px;
    }
}

/* Extra Small Devices */
@media (max-width: 400px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }

    .hero-stats {
        gap: 0.75rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .hero-image-card {
        max-width: 240px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .bento-item {
        padding: 1.25rem;
    }

    .tech-card {
        flex: 0 0 200px;
        height: 260px;
        padding: 1.5rem 1rem;
    }

    .timeline-card {
        padding: 1.25rem;
    }

    .project-content {
        padding: 1.25rem;
    }
}

/* Landscape Mobile Phones */
@media (max-width: 968px) and (orientation: landscape) {
    .hero-split {
        min-height: auto;
    }

    .hero-left,
    .hero-right {
        padding: 2rem 1.5rem;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .hero-description {
        margin-bottom: 1.5rem;
    }

    .hero-stats {
        margin-top: 2rem;
    }

    .bento-section,
    .experience-section,
    .projects-section,
    .achievements-section,
    .certificates-section {
        padding: 3rem 1.5rem;
    }
}

/* Touch Device Enhancements */
@media (hover: none) and (pointer: coarse) {
    /* Larger touch targets */
    .nav-item a {
        padding: 1.25rem;
    }

    .btn {
        min-height: 48px;
    }

    .social-icon {
        width: 48px;
        height: 48px;
    }

    .mobile-menu-toggle {
        min-width: 48px;
        min-height: 48px;
    }

    /* Disable hover-only effects */
    .tech-card:hover::before,
    .bento-item:hover::before {
        animation-play-state: paused;
    }

    /* Better tap feedback */
    .btn:active,
    .nav-item a:active,
    .project-link:active,
    .skill-tag:active {
        transform: scale(0.97);
        transition: transform 0.1s;
    }

    /* Auto-show certificate backs on tap instead of hover */
    .certificate-flip {
        perspective: none;
    }

    .certificate-inner {
        position: relative;
    }

    .certificate-back {
        position: static;
        transform: none;
        margin-top: 1rem;
        border-radius: 20px;
        min-height: 150px;
    }

    .certificate-front {
        position: static;
    }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.glow-effect {
    box-shadow: var(--glow);
}