/* ===============================================
   PORTFOLIO REDESIGN - BRIGHT & PROFESSIONAL
   Design System & Variables
   =============================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* === COLOR SYSTEM === */
    /* Background */
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-hover: #F1F5F9;
    
    /* Primary Blue */
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-500: #3B82F6;
    --primary-600: #2563EB;
    --primary-700: #1D4ED8;
    --primary-900: #1E3A8A;
    
    /* Accent */
    --accent-cyan: #06B6D4;
    --accent-teal: #14B8A6;
    --accent-sky: #0EA5E9;
    
    /* Text */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    
    /* Border & Divider */
    --border-light: #E2E8F0;
    --border-medium: #CBD5E1;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-blue: 0 8px 16px -4px rgba(37, 99, 235, 0.2);
    
    /* === TYPOGRAPHY SCALE === */
    --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    
    /* === SPACING === */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* === TRANSITIONS === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* === BORDER RADIUS === */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

/* ===============================================
   BASE RESET & TYPOGRAPHY
   =============================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ===============================================
   NAVBAR - Clean & Professional
   =============================================== */

.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    color: var(--text-primary);
    font-size: var(--text-lg);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-weight: 800;
    font-size: var(--text-sm);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--space-2) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-600);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-nav {
    padding: var(--space-2) var(--space-5);
    background: var(--primary-600);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-base);
}

.btn-nav:hover {
    background: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ===============================================
   HERO SECTION - Two Column Layout
   =============================================== */

.hero {
    position: relative;
    padding: var(--space-20) 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
}

/* === Left Content === */
.hero-content {
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-intro {
    margin-bottom: var(--space-6);
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--primary-50);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    border: 1px solid var(--primary-200);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    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(1.1);
    }
}

.hero-title {
    margin-bottom: var(--space-5);
}

.hero-greeting {
    display: block;
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.hero-name {
    display: block;
    font-size: var(--text-5xl);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-700) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-role {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-bottom: var(--space-6);
}

.role-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: white;
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

.role-badge i {
    color: var(--primary-600);
}

.role-divider {
    color: var(--border-medium);
}

.role-tags {
    font-size: var(--text-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.hero-description {
    max-width: 540px;
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

/* === BUTTON SYSTEM === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-base);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-600);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue);
}

.btn-secondary {
    background: white;
    color: var(--primary-600);
    border: 2px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === Stats === */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
}

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

.stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-light);
}

/* ===============================================
   HERO VISUAL - Right Side
   =============================================== */

.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease 0.2s both;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.visual-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
}

/* Main Card */
.visual-card {
    position: relative;
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
    z-index: 2;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.card-dots {
    display: flex;
    gap: 6px;
}

.card-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-medium);
}

.card-dots span:nth-child(1) {
    background: #EF4444;
}

.card-dots span:nth-child(2) {
    background: #F59E0B;
}

.card-dots span:nth-child(3) {
    background: #10B981;
}

.card-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    text-align: center;
}

.visual-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--primary-600);
}

.visual-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.mini-stat {
    padding: var(--space-3);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
}

.mini-label {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-bottom: var(--space-1);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mini-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.mini-value i {
    color: var(--accent-teal);
}

/* Floating Cards */
.floating-card {
    position: absolute;
    background: white;
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    z-index: 3;
    animation: float 3s ease-in-out infinite;
}

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

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

.card-2 {
    top: 50%;
    right: -15%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 15%;
    left: -15%;
    animation-delay: 2s;
}

.float-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-sky));
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
}

.float-text {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

/* Decorative Elements */
.deco-circle {
    position: absolute;
    border-radius: 50%;
    z-index: 0;
}

.circle-1 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    top: -50px;
    right: -50px;
    opacity: 0.6;
}

.circle-2 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--accent-sky), var(--accent-cyan));
    bottom: -30px;
    left: -30px;
    opacity: 0.3;
}

.deco-dots {
    position: absolute;
    width: 100px;
    height: 100px;
    top: 30%;
    right: -40px;
    background-image: radial-gradient(circle, var(--primary-300) 2px, transparent 2px);
    background-size: 15px 15px;
    opacity: 0.4;
    z-index: 0;
}

/* ===============================================
   HERO BACKGROUND
   =============================================== */

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.gradient-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-200), var(--primary-100));
    top: -200px;
    right: -100px;
}

.gradient-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-sky), var(--accent-cyan));
    bottom: -150px;
    left: -100px;
}

.bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(90deg, var(--border-light) 1px, transparent 1px),
        linear-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.4;
}

/* ===============================================
   SECTIONS
   =============================================== */

.section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-subtitle {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--primary-600);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--text-primary);
}

/* ===============================================
   ABOUT SECTION
   =============================================== */

.section-about {
    background: white;
}

.about-grid {
    max-width: 900px;
    margin: 0 auto;
}

.about-lead {
    font-size: var(--text-xl);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.about-lead strong {
    color: var(--primary-700);
    font-weight: 700;
}

.about-content p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.highlight-item {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.highlight-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    flex-shrink: 0;
}

.highlight-content h4 {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.highlight-content p {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
}

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

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .hero-name {
        font-size: var(--text-4xl);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 72px);
        background: white;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-links {
        flex-direction: column;
        padding: var(--space-8);
        gap: var(--space-4);
    }
    
    .nav-cta {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--space-12) 0;
    }
    
    .hero-name {
        font-size: var(--text-3xl);
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .floating-card {
        display: none;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --text-5xl: 2.25rem;
        --text-4xl: 1.875rem;
        --text-3xl: 1.5rem;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .hero-stats {
        gap: var(--space-4);
    }
    
    .stat-value {
        font-size: var(--text-2xl);
    }
}

/* ===============================================
   EXPERIENCE SECTION
   =============================================== */

.section-experience {
    background: white;
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-500), var(--primary-200));
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--space-12);
}

.timeline-dot {
    position: absolute;
    left: 21px;
    top: 8px;
    width: 20px;
    height: 20px;
    background: var(--primary-600);
    border: 4px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--primary-100);
    z-index: 2;
    transition: all var(--transition-base);
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.3);
    box-shadow: 0 0 0 8px var(--primary-100);
}

.experience-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.experience-period {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--primary-50);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.experience-title {
    font-size: var(--text-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.experience-company {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--primary-600);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.experience-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.experience-highlights {
    list-style: none;
    margin-bottom: var(--space-6);
}

.experience-highlights li {
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.experience-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-600);
    font-weight: 700;
}

.experience-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-primary);
    color: var(--primary-700);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
    border: 1px solid var(--primary-200);
}

/* ===============================================
   SKILLS SECTION
   =============================================== */

.section-skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

.skill-category {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 2px solid var(--border-light);
}

.category-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
}

.category-title {
    font-size: var(--text-2xl);
    color: var(--text-primary);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.skill-item {
}

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-level {
    font-size: var(--text-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.skill-bar {
    height: 8px;
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-600), var(--primary-400));
    border-radius: var(--radius-full);
    transition: width 1s ease;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Tools Section */
.tools-section {
    text-align: center;
}

.tools-title {
    font-size: var(--text-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-8);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-4);
}

.tool-card {
    background: white;
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    transition: all var(--transition-base);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-600);
}

.tool-card i {
    font-size: var(--text-3xl);
    color: var(--primary-600);
}

.tool-card span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
}

/* ===============================================
   PROJECTS SECTION
   =============================================== */

.section-projects {
    background: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
}

.project-card {
    background: white;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.project-image {
    position: relative;
    height: 240px;
    overflow: hidden;
    background: var(--bg-primary);
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--primary-600);
    transition: all var(--transition-base);
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-overlay .project-link {
    width: 60px;
    height: 60px;
    background: white;
    color: var(--primary-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    transform: scale(0);
    transition: transform var(--transition-base);
}

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

.project-content {
    padding: var(--space-8);
}

.project-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--primary-50);
    color: var(--primary-700);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.project-title {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.project-link-text {
    color: var(--primary-600);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: gap var(--transition-base);
}

.project-link-text:hover {
    gap: var(--space-3);
}

/* ===============================================
   CONTACT SECTION
   =============================================== */

.section-contact {
    background: var(--bg-primary);
}

.section-description {
    max-width: 600px;
    margin: var(--space-4) auto 0;
    color: var(--text-secondary);
    font-size: var(--text-lg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-12);
    align-items: start;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-info-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
}

.contact-info-card h3 {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.contact-info-card p {
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.info-link {
    color: var(--primary-600);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: gap var(--transition-base);
}

.info-link:hover {
    gap: var(--space-3);
}

/* Contact Form */
.contact-form-wrapper {
    background: white;
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

.form-header {
    margin-bottom: var(--space-8);
}

.form-header h3 {
    font-size: var(--text-2xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.form-header p {
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
}

.form-group label i {
    color: var(--primary-600);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-family: var(--font-base);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-600);
    background: white;
    box-shadow: 0 0 0 4px var(--primary-50);
}

.form-group textarea {
    resize: vertical;
}

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

/* ===============================================
   FOOTER
   =============================================== */

.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-12);
    padding-bottom: var(--space-12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary-600);
    transform: translateY(-2px);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--space-4);
    font-size: var(--text-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: white;
    padding-left: var(--space-2);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-3);
}

.footer-contact i {
    color: var(--primary-400);
}

.footer-bottom {
    margin-top: var(--space-8);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p {
    margin-bottom: var(--space-1);
}

/* ===============================================
   BACK TO TOP BUTTON
   =============================================== */

.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 48px;
    height: 48px;
    background: var(--primary-600);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: var(--text-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-700);
    transform: translateY(-4px);
}

/* ===============================================
   RESPONSIVE - ADDITIONAL
   =============================================== */

@media (max-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-dot {
        left: 6px;
    }
}

@media (max-width: 480px) {
    .contact-form-wrapper {
        padding: var(--space-6);
    }
    
    .experience-card {
        padding: var(--space-6);
    }
    
    .skill-category {
        padding: var(--space-6);
    }
}