/* ============================================================================
   JUAN HERNANDEZ - PORTFOLIO STYLES
   A clean, modern portfolio with dark/light mode support and flip cards
   ============================================================================ */

/* === COLOR VARIABLES === */

:root {
  /* Dark mode (default) */
  --bg: #0a0e1a;
  --bg-alt: #0f1419;
  --bg-card: #151922;
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --text-dimmed: #6b7280;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: #60a5fa;
  --secondary: #2caffe;
  --secondary-hover: #1e9be8;
  --secondary-light: #4db8ff;
  --accent: #f97373;
  --border: #1f2937;
  --border-light: #374151;
  --shadow: rgba(0, 0, 0, 0.5);
}

:root.light {
  /* Light mode */
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --text-dimmed: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #2caffe;
  --secondary-hover: #1e9be8;
  --secondary-light: #4db8ff;
  --accent: #ef4444;
  --border: #e2e8f0;
  --border-light: #cbd5e1;
  --shadow: rgba(0, 0, 0, 0.1);
}

/* === BASE STYLES === */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  font-family: "Fira Sans", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Smooth theme transitions */
body,
.site-header,
.hero,
.card,
.btn,
.theme-toggle {
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
}

/* === LAYOUT === */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

/* Logo */
.logo {
  text-decoration: none;
  color: var(--text);
  transition: opacity 0.2s ease;
}

.logo:hover {
  opacity: 0.8;
}

.logo-name {
  display: block;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.logo-tagline {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Navigation */
.nav {
  display: flex;
  gap: 2rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a {
  text-decoration: none;
  color: var(--text);
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.2s ease;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary);
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav a:hover::after,
.nav a:focus::after {
  width: 100%;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.2s ease;
}

.mobile-menu-toggle:hover {
  color: var(--primary-light);
}

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

.hero {
  width: 100%;
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(
      ellipse at 20% 20%,
      rgba(59, 130, 246, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 80%,
      rgba(168, 85, 247, 0.1) 0%,
      transparent 50%
    ),
    var(--bg);
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
      90deg,
      transparent 0%,
      rgba(59, 130, 246, 0.03) 50%,
      transparent 100%
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(59, 130, 246, 0.03) 2px,
      rgba(59, 130, 246, 0.03) 4px
    );
  pointer-events: none;
}

.hero-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 300px);
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Hero text */
.hero-text h1 {
  margin: 0 0 0.5rem;
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  margin: 0 0 1.5rem;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--secondary-light);
  letter-spacing: -0.01em;
}

.hero-text > p {
  margin: 0 0 1rem;
  max-width: 42rem;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Hero photo - Pokéball style */
.hero-photo {
  position: relative;
  width: 300px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: linear-gradient(
    180deg,
    var(--primary) 0%,
    var(--primary) 50%,
    var(--bg) 50%,
    var(--bg) 100%
  );
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-photo:hover {
  transform: scale(1.02);
  box-shadow: 0 25px 70px rgba(59, 130, 246, 0.3);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

/* === SECTIONS === */

.section {
  padding: 5rem 0;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 48rem;
  margin-bottom: 3rem;
}

.section-alt {
  background-color: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* === CARDS === */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover,
.card:focus-within {
  transform: translateY(-8px);
  border-color: var(--border-light);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3),
    0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}

/* === FLIP CARDS === */

.card-flip {
  perspective: 1000px;
  cursor: pointer;
  min-height: 380px;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

.card-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 380px;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.card-flip:hover .card-flip-inner {
  transform: rotateY(180deg);
}

.card-flip-front,
.card-flip-back {
  position: absolute;
  width: 100%;
  height: 100%;
  min-height: 380px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.card-flip-front {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px var(--shadow);
}

.card-flip-back {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #ffffff;
  transform: rotateY(180deg);
  border: 1px solid var(--primary);
  box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.3);
}

.card-flip-back h3 {
  color: #ffffff;
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

/* Skills list on card back */
.skills-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skills-list li {
  margin-bottom: 0.65rem;
  font-size: 0.85rem;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.95);
}

.skills-list strong {
  color: #ffffff;
  font-weight: 600;
  display: block;
  margin-bottom: 0.15rem;
}

/* Adjust card hover effects for flip cards */
.card-flip:hover,
.card-flip:focus-within {
  transform: translateY(0);
  box-shadow: none;
}

.card-flip:hover .card-flip-front {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3),
    0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Remove the top accent line for flip cards */
.card-flip::before {
  display: none;
}

/* === PROJECT CARDS WITH LOGOS === */

.card-project .project-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 1.25rem;
  background-color: var(--bg-alt);
  padding: 1rem;
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-project .project-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-project .project-icon {
  font-size: 4rem;
  text-align: center;
  margin-bottom: 1.25rem;
  opacity: 0.9;
}

.project-links {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.project-link {
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.2s ease;
}

.project-link:hover {
  opacity: 0.8;
}

/* Light mode project logos */
:root.light .card-project .project-logo {
  background-color: var(--bg-alt);
  border-color: var(--border);
}

/* === ACHIEVEMENTS SECTION === */

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.achievement-card {
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px var(--shadow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
}

.achievement-card:hover {
  transform: translateY(-8px);
  border-color: var(--secondary);
  box-shadow: 0 20px 25px -5px rgba(44, 175, 254, 0.3),
    0 10px 10px -5px rgba(44, 175, 254, 0.2);
}

.achievement-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.achievement-icon.trophy {
  animation: pulse 2s ease-in-out infinite;
}

.achievement-icon.cert {
  filter: drop-shadow(0 4px 8px rgba(44, 175, 254, 0.3));
}

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

.achievement-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.achievement-type {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--secondary);
  margin: 0 0 0.75rem;
}

.achievement-card p:last-child {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Light mode achievements */
:root.light .achievement-card {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

:root.light .achievement-card:hover {
  box-shadow: 0 20px 25px -5px rgba(44, 175, 254, 0.2),
    0 10px 10px -5px rgba(44, 175, 254, 0.15);
}

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

.experience-timeline {
  max-width: 900px;
  margin: 0 auto;
}

.experience-item {
  background-color: var(--bg-card);
  border-radius: 1rem;
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px var(--shadow);
  margin-bottom: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.experience-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--secondary), var(--primary));
  border-radius: 1rem 0 0 1rem;
}

.experience-item:hover {
  transform: translateX(8px);
  border-color: var(--border-light);
  box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.3);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-title-group h3 {
  margin: 0 0 0.5rem;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.experience-company {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--secondary);
}

.experience-date {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

.experience-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.experience-bullets li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.experience-bullets li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-size: 1.2rem;
  line-height: 1.6;
}

.experience-bullets strong {
  color: var(--text);
  font-weight: 600;
}

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

.tag {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-alt);
  color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.tag:hover {
  background-color: var(--secondary);
  color: #ffffff;
  border-color: var(--secondary);
  transform: translateY(-2px);
}

/* Light mode experience */
:root.light .experience-item {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

:root.light .experience-item:hover {
  box-shadow: 0 12px 20px -5px rgba(0, 0, 0, 0.15);
}

:root.light .tag {
  background-color: rgba(44, 175, 254, 0.1);
}

/* Mobile experience */
@media (max-width: 768px) {
  .experience-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .experience-date {
    font-size: 0.85rem;
  }

  .experience-item:hover {
    transform: translateX(4px);
  }
}

/* === MODALS === */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-active {
  display: flex;
  opacity: 1;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--bg-card);
  border-radius: 1rem;
  max-width: 800px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  animation: modalSlideUp 0.3s ease-out;
  z-index: 1001;
}

.modal-large {
  max-width: 1000px;
}

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

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background-color: var(--bg-alt);
  color: var(--text);
}

.modal-content h2 {
  margin: 0 0 1.5rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  padding-right: 2rem;
}

.modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.modal-image {
  width: 100%;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
}

.modal-image img {
  width: 100%;
  height: auto;
  display: block;
}

.modal-video {
  width: 100%;
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border);
  background-color: #000;
}

.modal-video video {
  width: 100%;
  height: auto;
  display: block;
}

.modal-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.modal-gallery img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  transition: transform 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.modal-gallery img:hover {
  transform: scale(1.05);
  border-color: var(--secondary);
}

/* === LIGHTBOX CAROUSEL === */

.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox-active {
  display: flex;
  opacity: 1;
  align-items: center;
  justify-content: center;
}

.lightbox-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  cursor: pointer;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  z-index: 2001;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 0.5rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 2.5rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2002;
  transition: all 0.2s ease;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2002;
  transition: all 0.2s ease;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
  left: 2rem;
}

.lightbox-next {
  right: 2rem;
}

.lightbox-counter {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.95rem;
  font-weight: 500;
}

/* Mobile lightbox */
@media (max-width: 768px) {
  .lightbox-close {
    top: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 2rem;
  }

  .lightbox-prev,
  .lightbox-next {
    width: 45px;
    height: 45px;
    font-size: 1.5rem;
  }

  .lightbox-prev {
    left: 1rem;
  }

  .lightbox-next {
    right: 1rem;
  }

  .lightbox-content img {
    max-height: 80vh;
  }
}

.modal-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.modal-info p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.modal-info strong {
  color: var(--text);
  font-weight: 600;
}

.modal-description {
  margin-top: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

.modal-info .btn {
  margin-top: 1rem;
  align-self: flex-start;
}

/* Achievement card click indicator */
.achievement-card {
  cursor: pointer;
  user-select: none;
}

.achievement-click {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--secondary);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.achievement-card:hover .achievement-click {
  opacity: 1;
}

/* Spotlight animation for navigation */
.card-spotlight {
  animation: spotlight 1.5s ease-in-out;
  border-color: var(--secondary) !important;
  box-shadow: 0 0 0 4px rgba(44, 175, 254, 0.3),
    0 20px 40px rgba(44, 175, 254, 0.4) !important;
}

@keyframes spotlight {
  0%,
  100% {
    transform: scale(1);
  }
  25%,
  75% {
    transform: scale(1.05);
  }
  50% {
    transform: scale(1.08);
  }
}

/* Light mode modals */
:root.light .modal-overlay {
  background-color: rgba(255, 255, 255, 0.9);
}

:root.light .modal-content {
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Mobile modals */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    max-height: 90vh;
    padding: 2rem 1.5rem;
  }

  .modal-content h2 {
    font-size: 1.5rem;
  }

  .modal-gallery {
    grid-template-columns: 1fr 1fr;
  }

  .modal-gallery img {
    height: 150px;
  }
}

/* === LISTS === */

.list {
  padding-left: 1.5rem;
  max-width: 48rem;
}

.list li {
  margin-bottom: 0.75rem;
  color: var(--text-muted);
  padding-left: 0.5rem;
}

.list li::marker {
  color: var(--secondary);
}

.muted {
  color: var(--text-dimmed);
  font-size: 0.95rem;
  font-style: italic;
}

/* === CONTACT === */

.contact-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* === BUTTONS === */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background-color: transparent;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: -1;
}

.btn:hover,
.btn:focus {
  transform: translateY(-2px);
  border-color: var(--primary);
  color: var(--text);
  box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.3);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-primary::before {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
}

.btn-primary:hover,
.btn-primary:focus {
  border-color: var(--primary-hover);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover::before {
  opacity: 1;
}

/* Button with icon */
.btn-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-icon .icon {
  display: inline-flex;
  width: 20px;
  height: 20px;
}

.btn-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

/* === FOOTER === */

.site-footer {
  border-top: 1px solid var(--border);
  background-color: var(--bg-alt);
  padding: 2rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
}

.footer-separator {
  opacity: 0.5;
  margin: 0 0.25rem;
}

/* === THEME TOGGLE === */

.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  border-radius: 50%;
  border: 1px solid var(--border);
  background-color: var(--bg-card);
  color: var(--text);
  width: 48px;
  height: 48px;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--shadow);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px) rotate(15deg);
  box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

/* === LIGHT MODE OVERRIDES === */

:root.light .hero {
  background: radial-gradient(
      ellipse at 20% 20%,
      rgba(37, 99, 235, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 80%,
      rgba(168, 85, 247, 0.05) 0%,
      transparent 50%
    ),
    var(--bg);
}

:root.light .hero::before {
  background: linear-gradient(
      90deg,
      transparent 0%,
      rgba(37, 99, 235, 0.02) 50%,
      transparent 100%
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(37, 99, 235, 0.02) 2px,
      rgba(37, 99, 235, 0.02) 4px
    );
}

:root.light .site-header {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

:root.light .card {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

:root.light .card:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

:root.light .card-flip-front {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
}

:root.light .card-flip:hover .card-flip-front {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

:root.light .card-flip-back {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

:root.light .hero-photo {
  box-shadow: 0 20px 60px rgba(37, 99, 235, 0.15);
}

:root.light .hero-photo:hover {
  box-shadow: 0 25px 70px rgba(37, 99, 235, 0.2);
}

:root.light .theme-toggle {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

:root.light .btn-primary {
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

:root.light .btn-primary:hover {
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
}

/* === RESPONSIVE DESIGN === */

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  .header-inner {
    padding: 0.75rem 0;
  }

  /* Mobile navigation */

  .nav {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 0;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
  }

  .nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav a {
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  /* Mobile hero */
  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding: 6rem 1.5rem 3rem;
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-photo {
    width: 260px;
    margin: 0 auto;
  }

  /* Mobile sections */
  .section {
    padding: 3rem 0;
    scroll-margin-top: 70px;
  }

  .section h2 {
    font-size: 1.875rem;
  }

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

  /* Mobile buttons */
  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  /* Mobile theme toggle */
  .theme-toggle {
    bottom: 1.5rem;
    right: 1.5rem;
  }

  /* === MOBILE FLIP CARDS === */
  .card-flip {
    min-height: 380px;
    position: relative;
    /* Reset desktop hover for mobile tap */
    perspective: none;
  }

  /* Prevent desktop hover flip from firing on mobile */
  .card-flip:hover .card-flip-inner {
    transform: none;
  }

  .card-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    /* Standardizes behavior for the JS toggle */
    transform-style: flat;
  }

  .card-flip-front,
  .card-flip-back {
    /* Absolute stacking only happens on mobile now */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    min-height: 380px;
    padding: 1.5rem;
    transition: opacity 0.4s ease, transform 0.4s ease;
    backface-visibility: hidden;
    /* Reset desktop rotation so they sit flat for the fade effect */
    transform: none;
  }

  .card-flip-back {
    display: flex !important;
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
  }

  /* Mobile Tap States */
  .card-flip.card-flipped .card-flip-front {
    opacity: 0;
    transform: scale(1.05);
    pointer-events: none;
  }

  .card-flip.card-flipped .card-flip-back {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
    /* Ensure it's not still rotated 180deg from desktop CSS */
    transform: rotateY(0deg);
  }

  /* Disable hover flip on mobile */
  .card-flip:hover {
    transform: none !important;
  }

  /* Show achievement click text on mobile */
  .achievement-card .achievement-click {
    opacity: 1;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }

  .section h2 {
    font-size: 1.625rem;
  }
}

/* Light mode mobile menu */
@media (max-width: 768px) {
  :root.light .nav {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  }
}

/* Final Fixed Grid Logic */
#work .cards {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr; /* Default Mobile */
  width: 100%;
}

/* Tablet: 2x2 Grid */
@media (min-width: 640px) {
  #work .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: Balanced 4-column row */
@media (min-width: 1024px) {
  #work .cards {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Reset any height/positioning issues from mobile polish */
  .card-flip {
    min-height: 400px;
    position: relative;
  }
}

.mini-badge {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}