/* 
 * Main Stylesheet for Faturrachman's Portfolio Website
 * Following GitHub-inspired dark theme with purple accent
 */

/* ===== Variables ===== */
:root {
  /* Colors from style guide */
  --primary-bg: rgb(13, 17, 23);
  --secondary-accent: rgb(118, 70, 168);
  --text-primary: #ffffff;
  --text-secondary: #c9d1d9;
  --borders: #30363d;
  --success: #2ea043;
  --links: #58a6ff;
  --card-bg: #1c2128;
  
  /* Spacing system */
  --space-xs: 0.25rem;  /* 4px */
  --space-sm: 0.5rem;   /* 8px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;   /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-xxl: 3rem;    /* 48px */
  
  /* Container width */
  --container-max: 1200px;
  
  /* Typography */
  --font-primary: 'Inter', system-ui, sans-serif;
  --font-code: 'Cascadia Code', 'Fira Code', monospace;
  
  /* Animation */
  --transition-quick: 0.2s ease-in-out;
  --transition-medium: 0.3s ease-in-out;
}

/* ===== Reset & Base Styles ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 70px; /* Ensures targets are not hidden under fixed header */
}

body {
  font-family: var(--font-primary);
  background-color: var(--primary-bg);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
  text-rendering: optimizeSpeed;
}

a {
  color: var(--links);
  text-decoration: none;
  transition: color var(--transition-quick);
}

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

a:focus {
  outline: 2px solid var(--secondary-accent);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  font-family: var(--font-primary);
}

button:focus {
  outline: 2px solid var(--secondary-accent);
  outline-offset: 2px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: 1.3;
}

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);
}

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

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--secondary-accent);
  border-radius: 2px;
}

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

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

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: 4px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-quick);
  text-align: center;
  font-size: 1rem;
  border: none;
}

.btn-primary {
  background-color: var(--secondary-accent);
  color: var(--text-primary);
}

.btn-primary:hover {
  background-color: rgba(118, 70, 168, 0.8);
  color: var(--text-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--borders);
}

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

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background-color var(--transition-medium);
  background-color: rgba(13, 17, 23, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.navbar.scrolled {
  background-color: var(--primary-bg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-md);
  max-width: var(--container-max);
  margin: 0 auto;
}

.navbar-logo a {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.navbar-links ul {
  display: flex;
  gap: var(--space-lg);
}

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

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

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

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

.navbar-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.toggle-bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px 0;
  background-color: var(--text-primary);
  transition: var(--transition-quick);
}

/* ===== Hero Section ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding-top: 80px;
  background-color: var(--primary-bg);
  position: relative;
}

.profile-image {
  margin: 0 auto var(--space-lg);
  width: 150px;
  height: 150px;
  overflow: hidden;
  border-radius: 50%;
  border: 3px solid var(--secondary-accent);
}

.profile-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-section h1 {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
}

.hero-section h2 {
  font-size: 1.5rem;
  color: var(--secondary-accent);
  margin-bottom: var(--space-md);
}

.hero-section p {
  margin-bottom: var(--space-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ===== About Section ===== */
.about-section {
  background-color: rgba(28, 33, 40, 0.5);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

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

.resume-download {
  margin-top: var(--space-lg);
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.stat {
  background-color: var(--card-bg);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--borders);
  text-align: center;
  transition: transform var(--transition-quick), border-color var(--transition-quick);
}

.stat:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-accent);
}

.stat i {
  font-size: 2rem;
  color: var(--secondary-accent);
  margin-bottom: var(--space-sm);
}

.stat h3 {
  margin-bottom: var(--space-sm);
}

/* ===== Projects Section ===== */
.projects-section {
  background-color: var(--primary-bg);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background-color: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--borders);
  transition: transform var(--transition-medium), border-color var(--transition-quick);
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--secondary-accent);
}

.project-image {
  height: 180px;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

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

.project-info {
  padding: var(--space-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  margin-bottom: var(--space-sm);
}

.project-description {
  margin-bottom: var(--space-md);
  font-size: 0.9rem;
  flex-grow: 1;
}

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

.tech-tag {
  background-color: rgba(118, 70, 168, 0.2);
  color: var(--text-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  font-size: 0.8rem;
}

.project-details-btn {
  display: block;
  width: 100%;
  padding: var(--space-sm) 0;
  background-color: transparent;
  color: var(--secondary-accent);
  border: 1px solid var(--secondary-accent);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-quick);
}

.project-details-btn:hover {
  background-color: var(--secondary-accent);
  color: var(--text-primary);
}

/* Project Details (Initially Hidden) */
.project-details {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(13, 17, 23, 0.95);
  z-index: 1001;
  display: none; /* Hidden by default, will be shown via JS */
  justify-content: center;
  align-items: center;
  padding: var(--space-xl);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.project-details[style*="display: flex"] {
  opacity: 1;
}

.details-content {
  background-color: var(--card-bg);
  padding: var(--space-xl);
  border-radius: 8px;
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-medium);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.project-details[style*="display: flex"] .details-content {
  transform: translateY(0);
}

.details-content h5 {
  margin-top: var(--space-lg);
  color: var(--secondary-accent);
}

.details-content ul {
  list-style: disc;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.details-content ul li {
  margin-bottom: var(--space-xs);
}

.details-gallery {
  margin: var(--space-lg) 0;
  border-radius: 8px;
  overflow: hidden;
}

.details-gallery img {
  width: 100%;
}

.details-tech-list {
  margin: var(--space-lg) 0;
}

.details-tech-list ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-left: 0;
  list-style: none;
}

.details-tech-list li {
  background-color: rgba(118, 70, 168, 0.2);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
}

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

.details-close-btn {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 2rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color var(--transition-quick);
}

.details-close-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ===== Skills Section ===== */
.skills-section {
  background-color: rgba(28, 33, 40, 0.5);
}

.skills-container {
  background-color: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--borders);
  padding: var(--space-lg);
}

.skills-tabs {
  display: flex;
  border-bottom: 1px solid var(--borders);
  margin-bottom: var(--space-lg);
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  position: relative;
}

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

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--secondary-accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.skill-category {
  margin-bottom: var(--space-xl);
}

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

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

.skill-item {
  width: 100%;
}

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

.skill-level {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.skill-bar {
  height: 10px;
  background-color: var(--borders);
  border-radius: 5px;
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(to right, var(--secondary-accent), rgba(118, 70, 168, 0.7));
  border-radius: 5px;
  width: 0; /* Will be set via JS animation */
  transition: width 0.8s ease-in-out;
}

/* ===== Contact Section ===== */
.contact-section {
  background-color: var(--primary-bg);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-info p {
  margin-bottom: var(--space-lg);
}

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

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-primary);
  transition: transform var(--transition-quick);
}

.contact-link:hover {
  transform: translateX(5px);
}

.contact-link i {
  color: var(--secondary-accent);
  font-size: 1.2rem;
}

.contact-whatsapp {
  background-color: var(--card-bg);
  padding: var(--space-lg);
  border-radius: 8px;
  border: 1px solid var(--borders);
  text-align: center;
}

.contact-whatsapp h3 {
  margin-bottom: var(--space-lg);
}

.contact-whatsapp .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ===== Footer ===== */
.footer {
  background-color: rgba(13, 17, 23, 0.8);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--borders);
}

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

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* ===== Animation Classes ===== */
.animate {
  animation: fadeIn 0.8s ease-in-out forwards;
}

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

/* ===== Responsive Styles ===== */
@media (max-width: 992px) {
  /* Tablet Styles */
  .navbar-toggle {
    display: block;
  }
  
  .navbar-links {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: var(--primary-bg);
    padding: var(--space-lg);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path var(--transition-medium);
  }
  
  .navbar-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
  
  .navbar-links ul {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  
  .about-stats {
    margin-top: var(--space-lg);
  }
}

@media (max-width: 576px) {
  /* Mobile Styles */
  html {
    font-size: 14px;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .hero-section h2 {
    font-size: 1.2rem;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .project-details {
    padding: var(--space-sm);
  }
  
  .details-content {
    padding: var(--space-md);
    max-height: 85vh;
  }
  
  .details-links {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* Print Styles */
@media print {
  .navbar,
  .hero-cta,
  .footer {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: black;
  }
  
  .container {
    width: 100%;
    max-width: 100%;
    padding: 0;
  }
  
  section {
    page-break-inside: avoid;
    padding: 1rem 0;
  }
}