/* ===============================
   Modern CV Portfolio CSS
   =============================== */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    
    /* Secondary Colors */
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --secondary-light: #34d399;
    
    /* Accent Colors */
    --accent-color: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    
    /* Dark Theme Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-surface: #1e293b;
    --bg-surface-hover: #334155;
    
    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    
    /* Border Colors */
    --border-primary: #475569;
    --border-secondary: #334155;
    
    /* Neutral Colors for compatibility */
    --white: #ffffff;
    --gray-50: #0f172a;
    --gray-100: #1e293b;
    --gray-200: #334155;
    --gray-300: #475569;
    --gray-400: #64748b;
    --gray-500: #94a3b8;
    --gray-600: #cbd5e1;
    --gray-700: #e2e8f0;
    --gray-800: #f1f5f9;
    --gray-900: #f8fafc;
    
    /* Work & Study Colors */
    --work-color: #10b981;
    --work-bg: #064e3b;
    --study-color: #3b82f6;
    --study-bg: #1e3a8a;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* 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-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: 
        /* linear-gradient(135deg, rgba(15, 23, 42, 0.8) 0%, rgba(30, 41, 59, 0.7) 50%, rgba(51, 65, 85, 0.6) 100%),
        url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover fixed; */
        linear-gradient(135deg, rgba(15, 23, 42, 0.7) 0%, rgba(30, 41, 59, 0.6) 50%, rgba(51, 65, 85, 0.5) 100%),
        url('../images/coder in nature night landscape 2.png') center/cover fixed;
    overflow-x: hidden;
}

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

/* ===============================
   Navigation
   =============================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    position: relative;
    transition: var(--transition-normal);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-normal);
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-secondary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* ===============================
   Hero Section
   =============================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: transparent;
    color: var(--white);
    overflow: hidden;
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 2;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.title-line {
    display: block;
    font-size: 1.2rem;
    font-weight: var(--font-weight-normal);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
}

.title-name {
    background: linear-gradient(45deg, #ffffff, #f8f9fa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.hero-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.hero-highlights {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.hero-highlight {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    transition: var(--transition-normal);
}

.hero-highlight:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.hero-highlight i {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-slow);
    overflow: hidden;
    width: 300px;
    height: 400px;
}

.hero-card:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.profile-image {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-2xl);
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition-normal);
}

.profile-photo:hover {
    transform: scale(1.02);
}

/* ===============================
   Section Styles
   =============================== */

section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ===============================
   About Section
   =============================== */

.about {
    /* background: rgba(30, 41, 59, 0.9); */
    background: transparent;
    backdrop-filter: blur(10px);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.about-highlights {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.highlight {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-secondary);
}

.highlight i {
    color: var(--primary-color);
    font-size: 1.2rem;
    width: 24px;
}

.skills-preview {
    background: var(--bg-tertiary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.skill-bar {
    margin-bottom: var(--spacing-lg);
}

.skill-name {
    display: block;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.progress {
    width: 100%;
    height: 8px;
    background: var(--border-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    transition: width 1s ease-in-out;
    width: 0%;
}

/* ===============================
   Experience Section
   =============================== */

.experience {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    display: flex;
    align-items: flex-start;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 4px solid var(--white);
    z-index: 2;
}

.timeline-dot.work {
    background: var(--work-color);
}

.timeline-dot.study {
    background: var(--study-color);
}

.timeline-date {
    width: 200px;
    text-align: center;
    padding: var(--spacing-sm) 0;
}

.date-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    font-size: 0.9rem;
    color: var(--white);
}

.date-badge.work {
    background: linear-gradient(45deg, var(--work-color), var(--secondary-light));
}

.date-badge.study {
    background: linear-gradient(45deg, var(--study-color), var(--primary-light));
}

.timeline-content {
    flex: 1;
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    margin: 0 var(--spacing-xl);
    position: relative;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    border: 2px solid transparent;
    transform: translateY(0);
}

.timeline-content:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(30, 41, 59, 0.98);
}

.timeline-item.expanded .timeline-content {
    background: rgba(30, 41, 59, 1);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: var(--shadow-2xl);
}

.timeline-item:nth-child(odd) .timeline-content {
    border-left: 4px solid var(--primary-color);
}

.timeline-item:nth-child(even) .timeline-content {
    border-right: 4px solid var(--secondary-color);
}

.job-header {
    margin-bottom: var(--spacing-lg);
    position: relative;
    transition: var(--transition-normal);
    padding: 0;
    border-radius: 0;
    border: none;
    pointer-events: none;
}

.expand-indicator {
    position: absolute;
    top: 50%;
    right: var(--spacing-md);
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    opacity: 0.8;
}

.expand-indicator:hover {
    opacity: 1;
    color: var(--primary-light);
}

.timeline-item.expanded .expand-indicator {
    transform: translateY(-50%) rotate(180deg);
    color: var(--primary-light);
    opacity: 1;
}

.timeline-content::after {
    content: "Click to expand";
    position: absolute;
    top: var(--spacing-lg);
    right: 50px;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    opacity: 0.6;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
}

.timeline-content:hover::after {
    opacity: 0.9;
    transform: translateY(-2px);
    color: var(--primary-light);
}

.timeline-item.expanded .timeline-content::after {
    content: "Click to collapse";
    opacity: 0.8;
    color: var(--primary-color);
}

.job-details {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 0;
}

.timeline-item.expanded .job-details {
    max-height: 2000px;
    opacity: 1;
    transform: translateY(0);
    margin-top: var(--spacing-lg);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.job-title {
    font-size: 1.4rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.company {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
}

.job-description ul {
    list-style: none;
    padding: 0;
}

.job-description li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.expanded .job-description li {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item.expanded .job-description li:nth-child(1) { transition-delay: 0.1s; }
.timeline-item.expanded .job-description li:nth-child(2) { transition-delay: 0.15s; }
.timeline-item.expanded .job-description li:nth-child(3) { transition-delay: 0.2s; }
.timeline-item.expanded .job-description li:nth-child(4) { transition-delay: 0.25s; }
.timeline-item.expanded .job-description li:nth-child(5) { transition-delay: 0.3s; }
.timeline-item.expanded .job-description li:nth-child(6) { transition-delay: 0.35s; }
.timeline-item.expanded .job-description li:nth-child(7) { transition-delay: 0.4s; }
.timeline-item.expanded .job-description li:nth-child(8) { transition-delay: 0.45s; }
.timeline-item.expanded .job-description li:nth-child(9) { transition-delay: 0.5s; }
.timeline-item.expanded .job-description li:nth-child(10) { transition-delay: 0.55s; }
.timeline-item.expanded .job-description li:nth-child(11) { transition-delay: 0.6s; }

.job-description li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 0.8rem;
}

.job-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.expanded .job-tags {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

.job-tags .tag {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.expanded .job-tags .tag {
    opacity: 1;
    transform: scale(1);
}

.timeline-item.expanded .job-tags .tag:nth-child(1) { transition-delay: 0.4s; }
.timeline-item.expanded .job-tags .tag:nth-child(2) { transition-delay: 0.45s; }
.timeline-item.expanded .job-tags .tag:nth-child(3) { transition-delay: 0.5s; }
.timeline-item.expanded .job-tags .tag:nth-child(4) { transition-delay: 0.55s; }
.timeline-item.expanded .job-tags .tag:nth-child(5) { transition-delay: 0.6s; }

.tag {
    background: var(--bg-surface);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--border-primary);
}

/* ===============================
   Skills Section
   =============================== */

.skills {
    /* background: rgba(30, 41, 59, 0.9); */
    background: transparent;
    backdrop-filter: blur(10px);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.skill-category {
    background: var(--bg-tertiary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-header i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.category-header h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-item {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(16, 185, 129, 0.25));
    color: var(--text-primary);
    border: 1px solid rgba(59, 130, 246, 0.5);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-normal);
    cursor: pointer;
    backdrop-filter: blur(5px);
}

.skill-item:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.4), rgba(16, 185, 129, 0.4));
    border-color: rgba(59, 130, 246, 0.7);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.3);
}

/* ===============================
   Projects Section
   =============================== */

.projects {
    /* background: rgba(15, 23, 42, 0.9); */
    background: transparent;
    backdrop-filter: blur(10px);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.project-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    border-top: 4px solid var(--primary-color);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.project-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.project-icon i {
    color: var(--white);
    font-size: 1.5rem;
}

.project-title {
    font-size: 1.3rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.project-date {
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-md);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.project-tags .tag {
    background: var(--bg-primary);
    color: var(--primary-light);
    border: 1px solid var(--border-primary);
}

/* ===============================
   Contact Section
   =============================== */

.contact {
    /* background: rgba(30, 41, 59, 0.9); */
    background: transparent;
    backdrop-filter: blur(10px);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
}

.contact-item:hover {
    background: var(--bg-surface-hover);
    transform: translateY(-2px);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: auto;
    height: auto;
}

.contact-icon i {
    color: var(--primary-color);
    font-size: 1.8rem;
}

.contact-details h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--text-secondary);
    line-height: 1.5;
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-normal);
}

.contact-details a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ===============================
   Footer
   =============================== */

.footer {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--border-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-normal);
}

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

/* ===============================
   Chatbot
   =============================== */

.chatbot-container {
    position: fixed;
    bottom: 50px;
    right: 50px;
    z-index: 1500;
}

.chatbot-button {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    border: none;
    color: var(--white);
    font-size: 1.5rem;
}

.chatbot-button:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 420px;
    height: 600px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--border-primary);
    display: none;
    flex-direction: column;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.chatbot-window.active {
    display: flex;
}

.chatbot-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chatbot-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
}

.chatbot-close {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chatbot-message {
    max-width: 80%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    line-height: 1.4;
}

.chatbot-message.user {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
}

.chatbot-message.bot {
    align-self: flex-start;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.chatbot-input-container {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    display: flex;
    gap: var(--spacing-sm);
}

.chatbot-input {
    flex: 1;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-normal);
}

.chatbot-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.chatbot-send {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--radius-lg);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.9rem;
}

.chatbot-send:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.chatbot-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Chatbot Arrow Indicator */
.chatbot-arrow {
    position: absolute;
    bottom: 130px;
    right: 0px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(238, 67, 25, 0.9);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-xs);
    border-radius: var(--radius-lg);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
    z-index: 1499;
    animation: subtle-pulse 2s infinite ease-in-out;
}

.chatbot-arrow.hidden {
    opacity: 0;
    pointer-events: none;
}

.arrow-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
    text-align: center;
}

.arrow-pointer {
    font-size: 1rem;
    margin-top: var(--spacing-xs);
    animation: arrow-bounce-down 1.5s infinite ease-in-out;
}

@keyframes subtle-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes arrow-bounce-down {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(3px); }
}

@keyframes arrow-bounce {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(3px); }
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    align-self: flex-start;
    max-width: 80%;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: typing-bounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing-bounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ===============================
   Responsive Design
   =============================== */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-highlights {
        justify-content: center;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-highlight {
        justify-content: center;
        min-width: 250px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        margin-left: 60px;
    }
    
    .timeline-dot {
        left: 30px !important;
        transform: translateX(-50%);
    }
    
    .timeline-date {
        width: auto;
        text-align: left;
        margin-bottom: var(--spacing-md);
    }
    
    .timeline-content {
        margin: 0 !important;
        border-left: 4px solid var(--primary-color) !important;
        border-right: none !important;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        justify-content: center;
        text-align: center;
    }
    
    /* Chatbot Arrow Responsive */
    .chatbot-arrow {
        bottom: 120px;
        right: 10px;
        font-size: 0.7rem;
        padding: 4px 6px;
    }
    
    .chatbot-container {
        bottom: 20px;
        right: 20px;
    }
    
    .chatbot-window {
        width: calc(100vw - 40px);
        height: 70vh;
        right: 0;
        bottom: 70px;
        max-width: 380px;
        border-radius: var(--radius-lg);
    }
    
    .chatbot-messages {
        padding: var(--spacing-md);
    }
    
    .chatbot-input-container {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .timeline-content {
        padding: var(--spacing-lg);
    }
    
    .skill-category,
    .project-card {
        padding: var(--spacing-lg);
    }
    
    .hero-card {
        padding: var(--spacing-lg);
    }
    
    /* Chatbot Mobile Optimization */
    .chatbot-container {
        bottom: 15px;
        right: 15px;
    }
    
    .chatbot-button {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .chatbot-window {
        width: calc(100vw - 30px);
        height: 60vh;
        right: 0;
        bottom: 60px;
        max-width: none;
        border-radius: var(--radius-md);
    }
    
    .chatbot-header {
        padding: var(--spacing-md);
    }
    
    .chatbot-header h3 {
        font-size: 1rem;
    }
    
    .chatbot-messages {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .chatbot-message {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .chatbot-input-container {
        padding: var(--spacing-sm);
    }
    
    .chatbot-input {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .chatbot-send {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    /* Chatbot Arrow - Hide on very small screens */
    .chatbot-arrow {
        display: none;
    }
}