/* ============================================
   Design System & CSS Custom Properties
   ============================================ */

:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-tertiary: #888888;
    --accent-color: #3b82f6;
    --accent-dark: #1e40af;
    --accent-light: #dbeafe;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #10b981;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Z-Index Scale */
    --z-sticky: 100;
    --z-dropdown: 200;
    --z-modal: 300;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #ecf0f1;
    --text-secondary: #bdc3c7;
    --text-tertiary: #95a5a6;
    --border-color: #2d3e50;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

/* ============================================
   Global Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base),
                color var(--transition-base);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.01em;
}

h1 { font-size: 3.5rem; margin-bottom: var(--spacing-lg); }
h2 { font-size: 2.5rem; margin-bottom: var(--spacing-xl); }
h3 { font-size: 1.875rem; margin-bottom: var(--spacing-lg); }
h4 { font-size: 1.5rem; margin-bottom: var(--spacing-md); }
h5 { font-size: 1.25rem; margin-bottom: var(--spacing-md); }
h6 { font-size: 1rem; margin-bottom: var(--spacing-md); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.8;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-dark);
}

/* Code Formatting */
code {
    font-family: var(--font-mono);
    background: var(--bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.section {
    padding: var(--spacing-4xl) 0;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
}

[data-theme="dark"] .navbar {
    background: rgba(26, 26, 46, 0.95);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.logo:hover {
    color: var(--accent-color);
}

.logo-icon {
    font-size: 2rem;
    animation: spin 10s linear infinite;
}

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

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
    flex: 1;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-fast);
}

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

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

/* Header Controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    transition: background-color var(--transition-fast),
                transform var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
    transform: scale(1.1);
}

.theme-icon {
    display: inline-block;
    transition: transform var(--transition-base);
}

.theme-toggle:active .theme-icon {
    transform: rotate(20deg);
}

/* Visitor Counter */
.visitor-counter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.counter-label {
    font-weight: 600;
}

.counter-number {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1rem;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
}

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

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-primary);
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        max-height: 500px;
    }

    .nav-link {
        padding: var(--spacing-lg);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-link::after {
        display: none;
    }

    .header-controls {
        gap: var(--spacing-md);
    }

    .visitor-counter {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

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

.hero {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: var(--spacing-4xl) 0;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

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

/* Profile Image */
.profile-image {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.profile-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

.nav-logo {
  height: 220px;      /* Adjust to fit your navigation bar */
  width: auto;       /* Keeps the logo proportions correct */
  display: block;
}

.image-border {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    animation: rotate 8s linear infinite;
    opacity: 0.3;
}

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

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

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .profile-image {
        width: 250px;
        height: 250px;
    }

    .hero-cta {
        flex-direction: column;
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-size: 1rem;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--accent-light);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
    margin-bottom: var(--spacing-md);
}

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

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

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

.about-text p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.9;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Features List */
.features-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.features-list li {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.features-list li:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.features-list h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.features-list p {
    font-size: 0.9rem;
    margin: 0;
}

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

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

/* ============================================
   Section Title
   ============================================ */

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-dark));
    border-radius: var(--radius-md);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
}

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

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.skill-category {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.skill-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    list-style: none;
}

.skill-badge {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    border: 1px solid var(--accent-color);
}

.skill-badge:hover {
    background: var(--accent-color);
    color: white;
    transform: scale(1.05);
}

/* Proficiency Section */
.proficiency-section {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 2px solid var(--border-color);
}

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

.proficiency-item {
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.proficiency-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.proficiency-label {
    font-weight: 600;
    color: var(--text-primary);
}

.proficiency-percent {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.9rem;
}

.proficiency-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.proficiency-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-dark));
    border-radius: var(--radius-md);
    transition: width 1s ease-out;
}

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

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

.timeline {
    position: relative;
    padding: var(--spacing-2xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-color), var(--accent-dark));
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

.timeline-item:nth-child(even) {
    direction: rtl;
}

.timeline-item:nth-child(even) > * {
    direction: ltr;
}

.timeline-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
    transform: translateY(-4px);
}

.timeline-marker {
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--accent-color);
}

.timeline-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.timeline-company {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-lg);
}

.timeline-details {
    list-style: none;
}

.timeline-details li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    position: relative;
    color: var(--text-secondary);
}

.timeline-details li:before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

@media (max-width: 1024px) {
    .timeline::before {
        left: 0;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        direction: ltr;
    }

    .timeline-marker {
        margin-left: 0;
    }
}

/* ============================================
   Education Section
   ============================================ */

.education-section {
    background-color: var(--bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);    
}

.education-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.education-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.education-header {
  color: #333333;
  font-size: clamp(0.9rem, 3vw, 1.1rem);
  margin: 0;
}

.education-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.education-institution {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.education-date {
    font-size: 0.9rem;
    color: var(--text-tertiary);
}

.education-details {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Certifications */
.certifications-group {
    grid-column: 1 / -1;
}

.certifications-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.cert-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-color);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.cert-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.cert-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-lg);
}

.cert-name {
    font-size: 1.1rem;
    color: var(--accent-color);
    margin: 0;
}

.cert-date {
    background: var(--accent-light);
    color: var(--accent-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.cert-issuer {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.cert-credential {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

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

    .cert-header {
        flex-direction: column;
    }

    .cert-date {
        align-self: start;
    }
}

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

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

.contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
}

/* Contact Form */
.contact-form {
    display: grid;
    gap: var(--spacing-xl);
}

.form-group {
    display: grid;
    gap: var(--spacing-sm);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-input,
.form-textarea {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-message {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: 600;
    margin-top: var(--spacing-lg);
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid #ef4444;
}

/* Contact Information */
.contact-info {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.contact-info-title {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xl);
    color: var(--accent-color);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.contact-item:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.contact-link {
    color: var(--accent-color);
    font-weight: 500;
    word-break: break-all;
}

.contact-link:hover {
    color: var(--accent-dark);
}

/* Resume Section */
.resume-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.resume-title {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* Response Time */
.response-time {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.response-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

.status-indicator {
    color: var(--success-color);
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

    .contact-info {
        position: static;
    }
}

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

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-3xl);
}

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

.footer-text {
    color: var(--text-secondary);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-link {
    color: var(--accent-color);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-dark);
}

.footer-badge {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-note {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin: 0;
}

/* ============================================
   Animations
   ============================================ */

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
    opacity: 0;
}

/* Stagger animations */
.fade-in-up:nth-child(2) { animation-delay: 0.1s; }
.fade-in-up:nth-child(3) { animation-delay: 0.2s; }
.fade-in-up:nth-child(4) { animation-delay: 0.3s; }

.fade-in:nth-child(1) { animation-delay: 0s; }
.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.2s; }
.fade-in:nth-child(4) { animation-delay: 0.3s; }
.fade-in:nth-child(5) { animation-delay: 0.4s; }
.fade-in:nth-child(6) { animation-delay: 0.5s; }

/* ============================================
   Accessibility
   ============================================ */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-color);
    color: white;
    padding: var(--spacing-md);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Focus states */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .navbar,
    .theme-toggle,
    .visitor-counter,
    .mobile-toggle,
    .footer {
        display: none;
    }

    body {
        background: white;
        color: black;
    }
}

/* ============================================
   Responsive Design - Tablet
   ============================================ */

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }

    .nav-menu {
        gap: var(--spacing-lg);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Responsive Design - Mobile
   ============================================ */

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .contact-info {
        position: static;
        margin-top: var(--spacing-lg);
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
}


/* Enables smooth scrolling when clicking the '#' anchor link */
html {
  scroll-behavior: smooth;
}

.back-to-top-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99; /* Ensures it sits above other elements */
  
  /* Styling */
  width: 45px;
  height: 45px;
  background-color: #333; /* Change to your theme color */
  color: white;
  border-radius: 50%;
  
  /* Centering the arrow symbol */
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 20px;
  font-weight: bold;
  
  /* Smooth hover animation */
  transition: background-color 0.3s, transform 0.3s;
}

.back-to-top-btn:hover {
  background-color: #555; /* Lighter color on hover */
  transform: translateY(-3px); /* Subtle lift animation */
}