/* 
 * Main Stylesheet for Richard Nixon's Developer Portfolio
 * Author: Manus AI
 * Version: 1.0
 */

/* ===== CSS RESET & BASE STYLES ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Color Variables */
  --primary: #0366D6;
  --secondary: #5BBD72;
  --accent: #F0DB4F;
  --dark: #24292E;
  --light: #F6F8FA;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --white: #ffffff;
  --black: #000000;
  --success: #28a745;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;
  
  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-code: 'Fira Code', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-negative: -1;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

/* Dark Theme Variables */
.dark-theme {
  --primary: #58a6ff;
  --secondary: #56d364;
  --accent: #f1e05a;
  --dark: #0d1117;
  --light: #161b22;
  --gray-100: #21262d;
  --gray-200: #30363d;
  --gray-300: #484f58;
  --gray-400: #6e7681;
  --gray-500: #8b949e;
  --gray-600: #c9d1d9;
  --gray-700: #d0d7de;
  --gray-800: #e6edf3;
  --gray-900: #f0f6fc;
  --white: #f0f6fc;
  --black: #010409;
}

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

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.dark-theme body {
  color: var(--gray-300);
  background-color: var(--dark);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  color: var(--gray-900);
}

.dark-theme h1, 
.dark-theme h2, 
.dark-theme h3, 
.dark-theme h4, 
.dark-theme h5, 
.dark-theme h6 {
  color: var(--white);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-md);
}

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

a:hover {
  color: var(--secondary);
}

ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-xl);
}

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

code {
  font-family: var(--font-code);
  background-color: var(--gray-100);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}

.dark-theme code {
  background-color: var(--gray-800);
}

/* ===== LAYOUT & CONTAINERS ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

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

.section-header p {
  color: var(--gray-600);
  font-size: 1.1rem;
}

.dark-theme .section-header p {
  color: var(--gray-400);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: background-color var(--transition-normal);
}

.dark-theme .header {
  background-color: var(--dark);
  box-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

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

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin-left: var(--space-lg);
}

.nav-list a {
  color: var(--gray-700);
  font-weight: 500;
  text-decoration: none;
  padding: var(--space-sm) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.dark-theme .nav-list a {
  color: var(--gray-400);
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--primary);
}

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

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.hamburger {
  display: block;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--gray-800);
  transition: background-color var(--transition-fast);
}

.dark-theme .hamburger {
  background-color: var(--gray-300);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--gray-800);
  transition: transform var(--transition-fast);
}

.dark-theme .hamburger::before,
.dark-theme .hamburger::after {
  background-color: var(--gray-300);
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  bottom: -6px;
}

.mobile-menu-toggle.active .hamburger {
  background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.mobile-menu-toggle.active .hamburger::after {
  transform: rotate(-45deg);
  bottom: 0;
}

.theme-toggle {
  margin-left: var(--space-lg);
}

#theme-toggle-btn {
  background: none;
  border: none;
  color: var(--gray-600);
  font-size: 1.2rem;
  cursor: pointer;
  padding: var(--space-xs);
  transition: color var(--transition-fast);
}

#theme-toggle-btn:hover {
  color: var(--primary);
}

.dark-theme #theme-toggle-btn {
  color: var(--gray-400);
}

.dark-theme #theme-toggle-btn:hover {
  color: var(--primary);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 120px 0 var(--space-xxl);
  background-color: var(--light);
  position: relative;
  overflow: hidden;
}

.dark-theme .hero {
  background-color: var(--gray-900);
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.hero-content {
  flex: 1;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
  color: var(--gray-900);
}

.hero-content h2 {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.hero-content .lead {
  font-size: 1.2rem;
  margin-bottom: var(--space-lg);
  color: var(--gray-700);
}

.dark-theme .hero-content h1 {
  color: var(--white);
}

.dark-theme .hero-content .lead {
  color: var(--gray-400);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-image-container {
  width: 300px;
  height: 300px;
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 5px solid var(--white);
}

.dark-theme .profile-image-container {
  border-color: var(--gray-800);
}

.profile-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--gray-200);
  color: var(--gray-600);
  font-size: 5rem;
}

.dark-theme .profile-image-placeholder {
  background-color: var(--gray-800);
  color: var(--gray-500);
}

.profile-image-placeholder.large {
  font-size: 8rem;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-family: var(--font-body);
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: var(--primary);
  opacity: 0.9;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-text {
  background-color: transparent;
  color: var(--primary);
  padding: var(--space-sm) 0;
  position: relative;
}

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

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

.btn-text:hover::after {
  width: 100%;
}

.btn-text i {
  margin-left: var(--space-xs);
  transition: transform var(--transition-fast);
}

.btn-text:hover i {
  transform: translateX(5px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

.dark-theme .btn-outline {
  border-color: var(--gray-700);
  color: var(--gray-400);
}

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

/* ===== ABOUT SECTION ===== */
.about-preview {
  background-color: var(--white);
}

.dark-theme .about-preview {
  background-color: var(--dark);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-cta {
  margin-top: var(--space-lg);
}

.bio-content {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
}

.bio-image {
  flex: 1;
}

.bio-text {
  flex: 2;
}

.bio-details {
  margin: var(--space-lg) 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.bio-detail {
  display: flex;
  align-items: center;
}

.detail-label {
  font-weight: 600;
  color: var(--gray-700);
  margin-right: var(--space-sm);
}

.dark-theme .detail-label {
  color: var(--gray-400);
}

.bio-cta {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* ===== SKILLS SECTION ===== */
.skills-preview {
  background-color: var(--light);
}

.dark-theme .skills-preview {
  background-color: var(--gray-900);
}

.mern-stack {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

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

.skill-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 2rem;
  color: var(--white);
  transition: transform var(--transition-normal);
}

.skill-icon:hover {
  transform: translateY(-5px);
}

.skill-icon.mongodb {
  background-color: #4DB33D;
}

.skill-icon.express {
  background-color: #000000;
}

.skill-icon.react {
  background-color: #61DAFB;
  color: #282c34;
}

.skill-icon.node {
  background-color: #339933;
}

.mern-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0;
}

.other-skills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.skill-tag {
  background-color: var(--gray-200);
  color: var(--gray-700);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.dark-theme .skill-tag {
  background-color: var(--gray-800);
  color: var(--gray-400);
}

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

.skills-cta {
  text-align: center;
  margin-top: var(--space-lg);
}

/* MERN Stack Section */
.mern-stack-section {
  background-color: var(--light);
}

.dark-theme .mern-stack-section {
  background-color: var(--gray-900);
}

.mern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.mern-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.dark-theme .mern-card {
  background-color: var(--gray-800);
}

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

.mern-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 2rem;
  color: var(--white);
}

.mern-card h3 {
  margin-bottom: var(--space-md);
}

.skill-list {
  text-align: left;
  list-style-type: none;
  padding-left: 0;
}

.skill-list li {
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: var(--space-lg);
}

.skill-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: bold;
}

/* Skill Bars */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.skill-category h3 {
  margin-bottom: var(--space-md);
  color: var(--gray-800);
}

.dark-theme .skill-category h3 {
  color: var(--gray-300);
}

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

.skill-bar {
  width: 100%;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

.skill-info .percent {
  color: var(--gray-600);
  font-size: 0.9rem;
}

.dark-theme .skill-info .percent {
  color: var(--gray-500);
}

.skill-progress {
  height: 8px;
  background-color: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.dark-theme .skill-progress {
  background-color: var(--gray-800);
}

.skill-progress-bar {
  height: 100%;
  background-color: var(--primary);
  border-radius: var(--radius-full);
  transition: width 1s ease-in-out;
}

/* Soft Skills */
.soft-skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.soft-skill-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.dark-theme .soft-skill-card {
  background-color: var(--gray-800);
}

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

.soft-skill-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-size: 1.5rem;
  color: var(--white);
  background-color: var(--primary);
}

.soft-skill-card h3 {
  margin-bottom: var(--space-sm);
}

.soft-skill-card p {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.dark-theme .soft-skill-card p {
  color: var(--gray-500);
}

/* ===== PROJECTS SECTION ===== */
.projects-preview {
  background-color: var(--white);
}

.dark-theme .projects-preview {
  background-color: var(--dark);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
}

.dark-theme .project-card {
  background-color: var(--gray-800);
}

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

.project-image {
    width: 100%;
    height: 200px; /* ou o tamanho que você quiser */
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.project-image img.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* cobre todo o espaço mantendo proporção */
    display: block;
}


.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--gray-200);
  color: var(--gray-600);
  font-size: 3rem;
}

.dark-theme .project-image-placeholder {
  background-color: var(--gray-700);
  color: var(--gray-400);
}

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

.project-content h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.3rem;
}

.project-content p {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.dark-theme .project-content p {
  color: var(--gray-500);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.project-tech span {
  background-color: var(--gray-100);
  color: var(--gray-700);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.dark-theme .project-tech span {
  background-color: var(--gray-700);
  color: var(--gray-400);
}

.project-links {
  display: flex;
  gap: var(--space-sm);
}

.projects-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* Project Filters */
.project-filters {
  padding: var(--space-lg) 0;
  background-color: var(--light);
}

.dark-theme .project-filters {
  background-color: var(--gray-900);
}

.filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-btn {
  background-color: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dark-theme .filter-btn {
  border-color: var(--gray-700);
  color: var(--gray-400);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* Project Details */
.project-details {
  position: absolute;
  bottom: 0;
  right: 0;
  padding: var(--space-sm);
}

.details-toggle {
  background: none;
  border: none;
  color: var(--gray-600);
  cursor: pointer;
  font-size: 1rem;
  transition: color var(--transition-fast);
}

.dark-theme .details-toggle {
  color: var(--gray-500);
}

.details-toggle:hover {
  color: var(--primary);
}

/* Project Modal */
.project-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-md);
}

.project-modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--white);
  border-radius: var(--radius-md);
  max-width: 1000px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.dark-theme .modal-content {
  background-color: var(--gray-800);
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--gray-600);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1;
  transition: color var(--transition-fast);
}

.dark-theme .modal-close {
  color: var(--gray-400);
}

.modal-close:hover {
  color: var(--danger);
}

.modal-body {
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
}

.modal-image-gallery {
  margin-bottom: var(--space-lg);
}

.gallery-main {
  width: 100%;
  height: 400px;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbs {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: var(--space-sm);
}

.thumb-item {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  padding: 0;
  background: none;
}

.thumb-item.active {
  border-color: var(--primary);
}

.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-info h2 {
  margin-bottom: var(--space-sm);
}

.modal-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.modal-tech span {
  background-color: var(--gray-100);
  color: var(--gray-700);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.dark-theme .modal-tech span {
  background-color: var(--gray-700);
  color: var(--gray-400);
}

.modal-description,
.modal-features,
.modal-challenges {
  margin-bottom: var(--space-lg);
}

.modal-description h3,
.modal-features h3,
.modal-challenges h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.modal-links {
  display: flex;
  gap: var(--space-md);
}

/* ===== EXPERIENCE SECTION ===== */
.experience-preview {
  background-color: var(--light);
}

.dark-theme .experience-preview {
  background-color: var(--gray-900);
}

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

.experience-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background-color: var(--gray-300);
}

.dark-theme .experience-timeline::before {
  background-color: var(--gray-700);
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  margin-bottom: var(--space-xl);
}

.timeline-marker {
  position: absolute;
  top: 0;
  left: 10px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  border: 4px solid var(--white);
  z-index: 1;
}

.dark-theme .timeline-marker {
  border-color: var(--gray-800);
}

.timeline-content h3 {
  margin-bottom: 0.25rem;
  font-size: 1.3rem;
}

.timeline-content h4 {
  color: var(--gray-600);
  font-weight: 500;
  margin-bottom: 0.25rem;
  font-size: 1.1rem;
}

.dark-theme .timeline-content h4 {
  color: var(--gray-500);
}

.timeline-date {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.dark-theme .timeline-date {
  color: var(--gray-600);
}

.experience-cta {
  text-align: center;
  margin-top: var(--space-xl);
}

/* Full Timeline Page */
.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 30px;
  width: 2px;
  background-color: var(--gray-300);
}

.dark-theme .timeline::before {
  background-color: var(--gray-700);
}

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

.timeline .timeline-marker {
  position: absolute;
  top: 0;
  left: 20px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  border: 4px solid var(--white);
  z-index: 1;
}

.dark-theme .timeline .timeline-marker {
  border-color: var(--dark);
}

.timeline .timeline-date {
  background-color: var(--gray-100);
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.dark-theme .timeline .timeline-date {
  background-color: var(--gray-800);
}

.job-description {
  margin-top: var(--space-md);
}

.job-responsibilities {
  margin-top: var(--space-sm);
  margin-bottom: var(--space-md);
}

.job-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.job-tech span {
  background-color: var(--gray-100);
  color: var(--gray-700);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.dark-theme .job-tech span {
  background-color: var(--gray-700);
  color: var(--gray-400);
}

/* Resume Download */
.resume-download {
  padding: var(--space-lg) 0;
}

.download-card {
  background-color: var(--primary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--white);
}

.download-icon {
  font-size: 2.5rem;
  margin-right: var(--space-lg);
}

.download-content {
  flex: 1;
}

.download-content h2 {
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.download-content p {
  margin-bottom: 0;
  opacity: 0.9;
}

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

.download-button .btn:hover {
  background-color: var(--light);
}

/* Achievements */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.achievement-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.dark-theme .achievement-card {
  background-color: var(--gray-800);
}

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

.achievement-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  background-color: var(--primary);
  flex-shrink: 0;
}

.achievement-content h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.achievement-content p {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.dark-theme .achievement-content p {
  color: var(--gray-500);
}

/* ===== CONTACT SECTION ===== */
.contact-cta {
  background-color: var(--primary);
  color: var(--white);
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-content h2 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.cta-content p {
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

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

.cta-content .btn-primary:hover {
  background-color: var(--light);
  color: var(--primary);
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-xl);
}

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

.info-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: transform var(--transition-fast);
}

.dark-theme .info-card {
  background-color: var(--gray-800);
}

.info-card:hover {
  transform: translateY(-3px);
}

.info-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--white);
  background-color: var(--primary);
  flex-shrink: 0;
}

.info-content h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.info-content p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

.availability-status {
  margin-top: var(--space-md);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

.dark-theme .status-indicator {
  background-color: var(--gray-800);
}

.status-indicator.available .status-dot {
  background-color: var(--success);
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  display: inline-block;
}

.status-text {
  font-weight: 500;
}

/* Contact Form */
.contact-form-container {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.dark-theme .contact-form-container {
  background-color: var(--gray-800);
}

.contact-form-container h2 {
  margin-bottom: var(--space-sm);
}

.contact-form-container > p {
  margin-bottom: var(--space-lg);
  color: var(--gray-600);
}

.dark-theme .contact-form-container > p {
  color: var(--gray-500);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  padding: 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
  background-color: var(--white);
  color: var(--gray-800);
}

.dark-theme .form-group input,
.dark-theme .form-group textarea {
  border-color: var(--gray-700);
  background-color: var(--gray-900);
  color: var(--gray-300);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-status {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  display: none;
}

.form-status.success {
  display: block;
  background-color: rgba(40, 167, 69, 0.1);
  color: var(--success);
  border: 1px solid var(--success);
}

.form-status.error {
  display: block;
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* FAQ Section */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--space-md);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.dark-theme .faq-item {
  border-color: var(--gray-700);
}

.faq-question {
  width: 100%;
  background-color: var(--white);
  padding: var(--space-md);
  border: none;
  text-align: left;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color var(--transition-fast);
}

.dark-theme .faq-question {
  background-color: var(--gray-800);
}

.faq-question:hover {
  background-color: var(--gray-100);
}

.dark-theme .faq-question:hover {
  background-color: var(--gray-700);
}

.faq-question i {
  transition: transform var(--transition-fast);
}

.faq-question.active i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-md);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  background-color: var(--gray-50);
}

.dark-theme .faq-answer {
  background-color: var(--gray-900);
}

.faq-question.active + .faq-answer {
  padding: var(--space-md);
  max-height: 500px;
}

/* CTA Section */
.cta-section {
  padding: var(--space-xxl) 0;
}

.cta-card {
  background-color: var(--primary);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  color: var(--white);
}

.cta-card h2 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.cta-card p {
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

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

.cta-card .btn-primary:hover {
  background-color: var(--light);
  color: var(--primary);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-xl) 0;
}

.dark-theme .footer {
  background-color: var(--black);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.footer-social a {
  color: var(--gray-400);
  font-size: 1.2rem;
  transition: color var(--transition-fast);
}

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

/* ===== PAGE HEADER ===== */
.page-header {
  background-color: var(--light);
  padding: 120px 0 var(--space-xl);
  text-align: center;
}

.dark-theme .page-header {
  background-color: var(--gray-900);
}

.page-header h1 {
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--gray-600);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

.dark-theme .page-header p {
  color: var(--gray-400);
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 991px) {
  html {
    font-size: 15px;
  }
  
  .hero .container {
    flex-direction: column-reverse;
    text-align: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-image {
    margin-bottom: var(--space-xl);
  }
  
  .bio-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .bio-details {
    grid-template-columns: 1fr;
  }
  
  .bio-cta {
    justify-content: center;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .nav-list {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg) 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
  }
  
  .dark-theme .nav-list {
    background-color: var(--dark);
  }
  
  .nav-list.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-list li {
    margin: var(--space-sm) 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .projects-grid,
  .mern-grid,
  .skills-grid,
  .soft-skills-grid,
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-body {
    flex-direction: column;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline .timeline-item {
    padding-left: 60px;
  }
  
  .timeline .timeline-marker {
    left: 10px;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 14px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content h2 {
    font-size: 1.5rem;
  }
  
  .profile-image-container {
    width: 250px;
    height: 250px;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .mern-stack {
    gap: var(--space-md);
  }
  
  .skill-icon {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }
  
  .download-card {
    flex-direction: column;
    text-align: center;
  }
  
  .download-icon {
    margin-right: 0;
    margin-bottom: var(--space-md);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}