/* ===================================
   Modern Portfolio - Abdullah Foysal
   Mobile-First Responsive Design
   Blue Theme with Dark Mode Support
=================================== */

/* ===== CSS Variables ===== */
:root {
  /* Primary Colors - Blue Theme */
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1d4ed8;
  --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);

  /* Accent Colors */
  --accent: #06b6d4;
  --accent-light: #22d3ee;

  /* Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Fonts */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 5rem 0;
  --container-width: 1200px;
  --border-radius: 12px;
  --border-radius-lg: 20px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --border-color: #334155;
  --card-bg: #1e293b;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --card-shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

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

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

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

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

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

ul {
  list-style: none;
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 1001;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--card-shadow-hover);
}

.theme-toggle .fa-moon {
  display: block;
  color: var(--primary);
  font-size: 1.25rem;
}

.theme-toggle .fa-sun {
  display: none;
  color: #fbbf24;
  font-size: 1.25rem;
}

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

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

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-normal);
  background: transparent;
}

.navbar.scrolled {
  background: var(--bg-primary);
  box-shadow: var(--card-shadow);
  padding: 0.75rem 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.logo-text {
  font-size: 1.75rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1002;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-normal);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  transition: right var(--transition-normal);
}

.nav-menu.active {
  right: 0;
}

.nav-link {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

/* Desktop Navigation */
@media (min-width: 992px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    flex-direction: row;
    gap: 2rem;
  }

  .nav-link {
    font-size: 0.95rem;
  }
}

/* ===== Hero Section ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 6rem 1.5rem 3rem;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

[data-theme="dark"] .hero-gradient {
  background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

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

.hero-title {
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-title .highlight {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  color: var(--primary);
  font-weight: 600;
  min-height: 2.5rem;
  margin-bottom: 1.5rem;
}

.typed-text::after {
  content: '|';
  animation: blink-cursor 0.7s infinite;
}

@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.8;
}

.hero-description strong {
  color: var(--primary);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

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

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}

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

/* Hero Actions */
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

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

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

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

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Hero Socials */
.hero-socials {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.hero-socials a {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-normal);
}

.hero-socials a:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* Hero Image */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-wrapper {
  position: relative;
  width: 280px;
  height: 280px;
}

.image-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.4;
  animation: glow 4s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.6; }
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--bg-primary);
  box-shadow: var(--card-shadow);
  position: relative;
  z-index: 1;
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  width: 50px;
  height: 50px;
  background: var(--card-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
  z-index: 2;
  animation: float 3s ease-in-out infinite;
}

.floating-badge img {
  width: 30px;
  height: 30px;
}

.floating-badge i {
  font-size: 1.5rem;
}

.floating-badge.flutter {
  top: 10%;
  right: -10px;
  animation-delay: 0s;
}

.floating-badge.swift {
  bottom: 20%;
  left: -10px;
  animation-delay: 0.5s;
  color: #F05138;
}

.floating-badge.android {
  bottom: 5%;
  right: 10%;
  animation-delay: 1s;
  color: #3DDC84;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(8px); opacity: 0.5; }
}

.scroll-indicator .arrow {
  display: block;
  text-align: center;
  margin-top: 0.5rem;
  color: var(--text-muted);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(5px); }
}

/* Desktop Hero */
@media (min-width: 992px) {
  .hero {
    padding: 0 1.5rem;
  }

  .hero-container {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  .hero-content {
    text-align: left;
  }

  .hero-stats {
    justify-content: flex-start;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-socials {
    justify-content: flex-start;
  }

  .hero-description {
    margin: 0 0 2rem;
  }

  .image-wrapper {
    width: 400px;
    height: 400px;
  }

  .floating-badge {
    width: 60px;
    height: 60px;
  }

  .floating-badge img {
    width: 35px;
    height: 35px;
  }

  .scroll-indicator {
    display: block;
  }
}

/* ===== Sections ===== */
.section {
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-subtitle {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-description {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== About Section ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about-intro {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.about-text p {
  margin-bottom: 1rem;
}

.about-info {
  margin-top: 2rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.info-item i {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.info-value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
}

/* Experience Card */
.about-image {
  display: flex;
  justify-content: center;
}

.experience-card {
  width: 200px;
  height: 200px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 10px 40px rgba(37, 99, 235, 0.3);
}

.exp-number {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
}

.exp-text {
  font-size: 1rem;
  text-align: center;
  opacity: 0.9;
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 2fr 1fr;
  }

  .info-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== Skills Section ===== */
.skills {
  background: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.skill-category {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
}

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

.category-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.category-title i {
  color: var(--primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.skill-tag.primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== Experience Section ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

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

.timeline-item {
  position: relative;
  padding-left: 60px;
  padding-bottom: 2rem;
}

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

.timeline-marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 42px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  z-index: 1;
}

.timeline-marker.current {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.timeline-content {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.timeline-date {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.timeline-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.timeline-badge.current {
  background: #22c55e;
  color: white;
}

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

.timeline-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.timeline-company {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 1rem;
}

.timeline-details {
  margin-bottom: 1rem;
  padding-left: 1rem;
}

.timeline-details li {
  position: relative;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 1rem;
}

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

.timeline-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.timeline-tech span {
  padding: 0.25rem 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
}

.timeline-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: white;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.app-link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .timeline-item {
    padding-left: 0;
    padding-right: 0;
    width: 50%;
  }

  .timeline-item:nth-child(odd) {
    padding-right: 40px;
    text-align: right;
  }

  .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 40px;
  }

  .timeline-marker {
    left: auto;
    right: -21px;
  }

  .timeline-item:nth-child(even) .timeline-marker {
    left: -21px;
    right: auto;
  }

  .timeline-item:nth-child(odd) .timeline-header {
    justify-content: flex-end;
  }

  .timeline-item:nth-child(odd) .timeline-company {
    justify-content: flex-end;
  }

  .timeline-item:nth-child(odd) .timeline-details {
    text-align: left;
  }

  .timeline-item:nth-child(odd) .timeline-tech,
  .timeline-item:nth-child(odd) .timeline-apps {
    justify-content: flex-end;
  }
}

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

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: all var(--transition-normal);
  position: relative;
}

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

.project-card.featured {
  border: 2px solid var(--primary);
}

.project-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.25rem 0.75rem;
  background: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 50px;
  z-index: 2;
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

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

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-gradient);
  color: white;
}

.project-placeholder i {
  font-size: 4rem;
  opacity: 0.8;
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-link {
  width: 50px;
  height: 50px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
  transform: scale(0);
  transition: transform var(--transition-normal);
}

.project-card:hover .project-link {
  transform: scale(1);
}

.coming-soon {
  padding: 0.5rem 1rem;
  background: white;
  color: var(--primary);
  border-radius: 50px;
  font-weight: 600;
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.project-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tech span {
  padding: 0.25rem 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 500;
}

.project-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 500;
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Apps Section ===== */
.apps-showcase {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.app-card {
  background: var(--card-bg);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: all var(--transition-normal);
}

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

.app-card.featured {
  border: 2px solid var(--primary);
  background: linear-gradient(135deg, var(--card-bg) 0%, rgba(37, 99, 235, 0.05) 100%);
}

.app-icon {
  width: 70px;
  height: 70px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.75rem;
}

.app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.app-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.app-badge {
  padding: 0.25rem 0.75rem;
  background: var(--primary);
  color: white;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.app-badge.success {
  background: #22c55e;
}

.app-badge.android {
  background: #3DDC84;
}

.app-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.app-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.app-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.app-stat i {
  color: var(--primary);
}

.app-links {
  margin-top: auto;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background: #000;
  color: white;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.store-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.store-btn.android {
  background: #3DDC84;
  color: #000;
}

.store-btn i {
  font-size: 1.75rem;
}

.store-label {
  display: block;
  font-size: 0.65rem;
  opacity: 0.8;
}

.store-name {
  display: block;
  font-size: 1rem;
  font-weight: 600;
}

@media (min-width: 768px) {
  .apps-showcase {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-card {
    flex-direction: row;
    align-items: flex-start;
  }

  .app-content {
    flex: 1;
  }
}

/* ===== Testimonials Section ===== */
.testimonials {
  background: var(--bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.testimonial-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  position: relative;
  transition: all var(--transition-normal);
}

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

.testimonial-quote {
  color: var(--primary);
  font-size: 2rem;
  opacity: 0.3;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-size: 1.1rem;
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.author-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Education Section ===== */
.education-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.education-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.edu-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.edu-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.edu-content h4 {
  font-size: 1rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.edu-date {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.edu-grade {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.edu-courses {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Certifications */
.certifications-list {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
}

.cert-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.cert-title i {
  color: var(--primary);
}

.cert-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.cert-item:hover {
  background: var(--primary);
  color: white;
}

.cert-item i {
  font-size: 1.25rem;
  color: var(--primary);
  width: 30px;
  text-align: center;
}

.cert-item:hover i {
  color: white;
}

.cert-item span:first-of-type {
  flex: 1;
  font-size: 0.95rem;
}

.cert-year {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.cert-item:hover .cert-year {
  color: rgba(255, 255, 255, 0.8);
}

/* Strengths */
.strengths-section {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
}

.strengths-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.strengths-title i {
  color: var(--primary);
}

.strengths-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.strength-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  transition: all var(--transition-normal);
}

.strength-item:hover {
  transform: translateY(-5px);
  background: var(--primary);
  color: white;
}

.strength-item i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.strength-item:hover i {
  color: white;
}

.strength-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.strength-item p {
  font-size: 0.9rem;
  line-height: 1.5;
}

@media (min-width: 768px) {
  .education-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 992px) {
  .strengths-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.contact-details a,
.contact-details p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

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

.contact-socials {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.contact-socials a {
  width: 45px;
  height: 45px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 1.1rem;
  transition: all var(--transition-normal);
}

.contact-socials a:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

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

@media (min-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr 2fr;
  }

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

/* ===== Footer ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-brand .logo-text {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.footer-socials {
  display: flex;
  gap: 1rem;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  transition: all var(--transition-normal);
}

.footer-socials a:hover {
  background: var(--primary);
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }

  .footer-brand {
    text-align: left;
  }
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}

/* ===== Utility Classes ===== */
.text-primary {
  color: var(--primary) !important;
}

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

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

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

/* ===== Loading State ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ===== Print Styles ===== */
@media print {
  .theme-toggle,
  .navbar,
  .back-to-top,
  .hero-socials,
  .contact-form-wrapper {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    page-break-inside: avoid;
  }
}