/* ==========================================
   CSS RESET & BASE STYLES
   ========================================== */

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

/* ==========================================
   CSS CUSTOM PROPERTIES (THEME VARIABLES)
   ========================================== */

:root {
    /* Colors - Light Theme */
    --color-bg: #f8f9fa;
    --color-surface: #ffffff;
    --color-surface-hover: #f1f3f5;
    --color-text: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-text-muted: #718096;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-accent: #06b6d4;
    --color-border: #e2e8f0;
    --color-code-bg: #f7fafc;
    --color-code-text: #2d3748;
    --logo-text-color:#2563eb;
    --logo-text-color-two:#06b6d4;
    
    /* 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);
    
    /* Typography */
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-unit: 8px;
    --container-max-width: 1200px;
    --section-padding: 120px;
    --section-padding-mobile: 60px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --logo-text-color:#cbd5e1;
    --logo-text-color-two:#cbd5e1;
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-hover: #334155;
    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-accent: #06b6d4;
    --color-border: #334155;
    --color-code-bg: #1e293b;
    --color-code-text: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ==========================================
   BASE TYPOGRAPHY
   ========================================== */

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

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
}


/* LOGO */
.logo {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size:1.4rem;
  text-decoration: none;
  letter-spacing: -0.02em;
  position: relative;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-10px);
  animation: logoFade 0.8s ease forwards;
  color:var(--logo-text-color);
}

/* Fade-in animation */
@keyframes logoFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Brackets */
.logo .bracket {
  color:var(--logo-text-color);
  transition: transform 0.3s ease;
}

/* Name */
.logo .name {
  background: linear-gradient(135deg, var(--logo-text-color), var(--logo-text-color-two));
  -webkit-background-clip: text;
  margin: 0 4px;
  transition: all 0.3s ease;
  
}


/* Slash */
.logo .slash {
  color:var(--logo-text-color);
  transition: transform 0.3s ease;
}

/* Hover Animations */
.logo:hover .bracket.left {
  transform: translateX(-6px);
}

.logo:hover .bracket.right {
  transform: translateX(6px);
}

.logo:hover .slash {
  transform: rotate(20deg);
}

.logo:hover .name {
  background: linear-gradient(135deg, var(--logo-text-color), var(--logo-text-color-two));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}


/* ==========================================
   ACCESSIBILITY - SKIP LINK
   ========================================== */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background:transparent;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 var(--radius-sm) 0;
    z-index: 100;
    font-weight: 500;
}

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

/* ==========================================
   FOCUS STYLES (ACCESSIBILITY)
   ========================================== */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================
   CONTAINER & LAYOUT
   ========================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 50;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
    background-color: rgba(248, 249, 250, 0.8);
}

[data-theme="dark"] .header {
    background-color: rgba(15, 23, 42, 0.8);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

@media (max-width: 768px) {
    .nav-container {height:55px;}
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--color-surface-hover);
}

.theme-icon {
    width: 20px;
    height: 20px;
}

.theme-icon-sun {
    display: none;
}

[data-theme="dark"] .theme-icon-moon {
    display: none;
}

[data-theme="dark"] .theme-icon-sun {
    display: block;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle-line {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background-color: var(--color-surface);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle.active .nav-toggle-line:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .nav-toggle.active .nav-toggle-line:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .nav-toggle-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
}

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
    padding-top: calc(72px + var(--section-padding));
    padding-bottom: var(--section-padding);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-content {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
    from {
        opacity: 0;
        transform: translateY(20px);
    }
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--color-text), var(--color-text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}
.hero-micro{
    display: inline-flex;
    align-items: center; flex-wrap: wrap;}
.hero-micro span {
    display: inline-block;
    width: 5px;
    height: 5px;
    background: var(--color-text-secondary);
    border-radius: 50%;
    margin: 5px 10px 0;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Code Window Visual */
.hero-visual {
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.code-window {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.code-window-header {
    padding: 12px 16px;
    background-color: var(--color-code-bg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    gap: 6px;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-border);
}

.code-dot:nth-child(1) {
    background-color: #ff5f57;
}

.code-dot:nth-child(2) {
    background-color: #ffbd2e;
}

.code-dot:nth-child(3) {
    background-color: #28ca42;
}

.code-content {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.code-line {
    color: var(--color-code-text);
}

.code-tag {
    color: #e06c75;
}

.code-attr {
    color: #d19a66;
}

.code-string {
    color: #98c379;
}

@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero {
        padding-top: calc(30px + var(--section-padding-mobile));
        padding-bottom: var(--section-padding-mobile);
    }
    
    .hero-visual {
        order: -1;
    }
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

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

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

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

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

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

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

/* ==========================================
   SECTION STYLES
   ========================================== */

section {
    padding: var(--section-padding) 0;
}

@media (max-width: 768px) {
    section {
        padding: var(--section-padding-mobile) 0;
    }
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

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

.about {
    background-color: var(--color-surface);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 64px;
    align-items: start;
}

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

.about-text p:last-child {
    margin-bottom: 0;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

@media (max-width: 968px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* ==========================================
   SERVICES SECTION
   ========================================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.service-card {
    padding: 40px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

.service-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.experience {
    background-color: var(--color-surface);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-left: 64px;
    margin-bottom: 48px;
}

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

.timeline-marker {
    position: absolute;
    left: 12px;
    top: 8px;
    width: 18px;
    height: 18px;
    background-color: var(--color-primary);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    background-color: var(--color-bg);
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.timeline-company {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 16px;
}

.timeline-description {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.timeline-description li {
    color: var(--color-text-secondary);
    padding-left: 20px;
    position: relative;
}

.timeline-description li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 12px;
    }
    
    .timeline-item {
        padding-left: 48px;
    }
    
    .timeline-marker {
        left: 4px;
    }
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.skill-category {
    padding: 32px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.skill-category-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-badge {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-badge:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* ==========================================
   RESUME SECTION
   ========================================== */

.resume-section {
    background-color: var(--color-surface);
}

.resume-card {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 64px 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-xl);
    color: white;
}

.resume-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.resume-description {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.95;
}

.resume-card .btn-download {
    background-color: white;
    color: var(--color-primary);
}

.resume-card .btn-download:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

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

.contact {
background-color: var(--color-surface);
}

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

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.contact-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.contact-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.contact-text {
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

.footer {background-color: var(--color-surface); border-top: 1px solid var(--color-border); padding: 48px 0;}
.footer-content {display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px;}

.footer-text {
color: var(--color-text-secondary);
font-size: 0.9375rem;
}

.footer-links {
display: flex;
gap: 24px;
}

.footer-link {
color: var(--color-text-secondary);
text-decoration: none;
font-size: 0.9375rem;
transition: color var(--transition-fast);
}

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

@media (max-width: 768px) {
.footer-content {
flex-direction:column-reverse;
text-align: center;
}
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

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

.mt-1 { margin-top: calc(var(--spacing-unit) * 1); }
.mt-2 { margin-top: calc(var(--spacing-unit) * 2); }
.mt-3 { margin-top: calc(var(--spacing-unit) * 3); }
.mt-4 { margin-top: calc(var(--spacing-unit) * 4); }

.mb-1 { margin-bottom: calc(var(--spacing-unit) * 1); }
.mb-2 { margin-bottom: calc(var(--spacing-unit) * 2); }
.mb-3 { margin-bottom: calc(var(--spacing-unit) * 3); }
.mb-4 { margin-bottom: calc(var(--spacing-unit) * 4); }