/* ===============================================
   CSS VARIABLES & THEME DEFINITIONS
   =============================================== */
:root {
  /* Colors */
  --bg: #0b1020;
  --bg-2: #0e1326;
  --text: #e6e6ea;
  --muted: #aab1c5;
  --primary: #7aa2ff;
  --accent: #8ef0d4;

  /* Glass & Card Effects */
  --card: rgba(255, 255, 255, 0.06);
  --glass: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --blur: 14px;
  --radius: 18px;

  /* Animation Variables */
  --title-chars: 22;
  --title-duration: 2s;
  --subtitle-chars: 56;
  --subtitle-duration: 1s;
  --subtitle-delay: calc(var(--title-duration) + 0.25s);
}

[data-theme="light"] {
  --bg: #f6f8ff;
  --bg-2: #eef2ff;
  --text: #0e1326;
  --muted: #4a5468;
  --primary: #1f67ff;
  --accent: #00b894;
  --card: rgba(255, 255, 255, 0.7);
  --glass: rgba(255, 255, 255, 0.75);
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

/* ===============================================
   BASE STYLES & RESET
   =============================================== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
    "Helvetica Neue", Arial;
  color: var(--text);
  background: var(--bg);
  transition: background 0.3s ease, color 0.3s ease;
}

/* Dynamic gradient background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background: radial-gradient(
      500px 500px at calc(var(--mx, 50%)) calc(var(--my, 30%)),
      rgba(122, 162, 255, 0.1),
      transparent 60%
    ),
    radial-gradient(
      900px 700px at 80% 10%,
      rgba(142, 240, 212, 0.08),
      transparent 65%
    ),
    radial-gradient(
      900px 700px at 15% 85%,
      rgba(255, 159, 243, 0.06),
      transparent 65%
    ),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  transition: background-position 0.3s ease;
}

/* ===============================================
   UTILITY COMPONENTS
   =============================================== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0;
  z-index: 9999;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

#loader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: grid;
  place-items: center;
  z-index: 99999;
  transition: opacity 0.5s ease;
}

.spinner {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 6px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--primary);
  animation: spin 1s linear infinite;
}

/* ===============================================
   BUTTON COMPONENTS
   =============================================== */
.btn {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card), transparent);
  padding: 12px 16px;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #0b1020;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.15s ease, background 0.3s ease;
}

.icon-btn:hover {
  transform: translateY(-2px);
}

.icon {
  width: 1.2em;
  height: 1.2em;
  margin-right: 0.5em;
  vertical-align: -0.2em;
}

/* ===============================================
   HEADER & NAVIGATION
   =============================================== */
header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  background: var(--glass);
  border-bottom: 1px solid var(--border);
  z-index: 999;
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand .logo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #0b1020;
  font-weight: 900;
  box-shadow: var(--shadow);
}

.nav a {
  color: var(--text);
  text-decoration: none;
  opacity: 0.9;
  font-weight: 600;
}

.menu {
  display: flex;
  gap: 20px;
  align-items: center;
}

.menu a {
  position: relative;
}

.menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 2px;
  width: 0;
  background: currentColor;
  transition: width 0.25s ease;
}

.menu a:hover::after {
  width: 100%;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.burger {
  display: none;
}

.mobile-menu {
  display: none;
}

/* ===============================================
   MAIN LAYOUT
   =============================================== */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 26px 18px 80px;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  padding: 18px;
  box-shadow: var(--shadow);
}

/* ===============================================
   HERO SECTION
   =============================================== */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 26px;
  align-items: center;
  padding: 20px 0 40px;
}

.hero .left {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.title {
  font-size: clamp(28px, 5vw, 54px);
  line-height: 1.1;
  margin: 0;
}

.subtitle {
  font-size: clamp(16px, 2.6vw, 20px);
  color: var(--muted);
  margin: 0;
}

.cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-card {
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  padding: 22px;
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
  perspective: 100px;
  width: 100%;
}

.stat {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: center;
}

.stat b {
  font-size: 24px;
}

/* Floating particles */
#particles {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
}

.float-shape {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 40px;
  filter: blur(40px);
  opacity: 0.25;
  transform: translateZ(-100px);
}

.shape-a {
  background: radial-gradient(circle, var(--primary), transparent 60%);
  top: -20px;
  right: -40px;
}

.shape-b {
  background: radial-gradient(circle, var(--accent), transparent 60%);
  bottom: -40px;
  left: -40px;
}

/* ===============================================
   SECTIONS
   =============================================== */
section {
  margin-top: 20px;
}

.section-title {
  font-size: 26px;
  margin: 0 0 18px;
}

/* About Section */
.about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
/*gpt test*/

#about .about {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

#about .card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  flex: 1 1 300px; /* responsive */
}

#aboutText {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text);
}

.info-list div {
  margin-bottom: 12px;
}

.info-list b {
  font-weight: bold;
}

.info-list span {
  display: block;
  margin-top: 2px;
  font-size: 0.9rem;
  color: var(--muted);
}

aside.card {
  grid-row: 2;
  grid-column: 1 / span 2;
}

form#contactForm.card {
  grid-row: 1;
  grid-column: 1 / span 2;
}

.info-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  font-size: 14px;
}

.info-list div {
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
}

/* Skills Section */
.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.skill-cat {
  position: relative;
  padding-bottom: 8px;
  transition: transform 0.2s ease;
}

.skill-cat:hover {
  transform: translateY(-4px);
}

.skill-cat h4 {
  margin: 0 0 8px;
}

.skill {
  display: grid;
  gap: 6px;
  margin: 12px 0;
}

.bar {
  height: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.bar > span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 1s ease;
}

/* Projects Section */
.projects {
  grid-template-columns: repeat(3, 1fr);
}

.project-card {
  position: relative;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--glass);
  backdrop-filter: blur(var(--blur));
  padding: 16px;
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
  perspective: 900px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-6px) rotateX(2deg) rotateY(-2deg);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 8px;
}

.metric {
  text-align: center;
  padding: 8px;
  border-radius: 12px;
  background: var(--card);
  border: 1px solid var(--border);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.links .btn {
  flex: 1;
  text-align: center;
  min-width: 0;
}

/* ===============================================
   FORMS & INPUTS
   =============================================== */
form {
  display: grid;
  gap: 12px;
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(122, 162, 255, 0.18);
}

.error {
  border-color: #ff6b6b !important;
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.18) !important;
}

.success-badge {
  display: none;
  margin-top: 6px;
  font-size: 14px;
  color: #00d1a7;
}

a#emailLink {
  color: white;
  font-weight: bold;
  text-decoration: none;
}

/* ===============================================
   FOOTER
   =============================================== */
footer {
  margin-top: 80px;
  padding: 24px 18px;
  color: var(--muted);
  text-align: center;
}

/* ===============================================
   ANIMATIONS
   =============================================== */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes blink-caret {
  0%,
  100% {
    border-color: transparent;
  }
  50% {
    border-color: inherit;
  }
}

@keyframes typing-title {
  from {
    width: 0;
  }
  to {
    width: calc(var(--title-chars) * 1ch);
  }
}

@keyframes typing-subtitle {
  from {
    width: 0;
  }
  to {
    width: calc(var(--subtitle-chars) * 1ch);
  }
}

@keyframes hide-caret {
  to {
    border-right-color: transparent;
  }
}

/* Typing Animation Styles */
h1#heroTitle,
p#heroSubtitle {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  width: 0;
  border-right: 0.15em solid;
  vertical-align: bottom;
}

h1#heroTitle {
  letter-spacing: 0.15em;
  border-right-color: orange;
  animation: typing-title var(--title-duration) steps(var(--title-chars), end)
      forwards,
    blink-caret 0.75s step-end infinite,
    hide-caret 0s var(--title-duration) forwards;
}

p#heroSubtitle {
  text-align: left;
  letter-spacing: 0.05em;
  border-right-color: #ccc;
  animation: typing-subtitle var(--subtitle-duration)
      steps(var(--subtitle-chars), end) forwards var(--subtitle-delay),
    blink-caret 0.75s step-end infinite var(--subtitle-delay);
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 1100px) {
  .projects {
    grid-template-columns: repeat(2, 1fr);
  }
  .skills {
    grid-template-columns: repeat(2, 1fr);
  }
  .about {
    grid-template-columns: 1fr;
  }
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .menu {
    display: none;
  }
  .burger {
    display: inline-flex;
  }

  .mobile-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 18px;
    right: 18px;
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 998;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  }

  .mobile-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .mobile-menu a {
    padding: 10px 12px;
    border-radius: 10px;
    background: var(--card);
    border: 1px solid transparent;
    text-decoration: none;
    font-weight: bold;
    color: var(--text);
    transition: background 0.2s ease, border-color 0.2s ease;
  }

  .mobile-menu a:hover,
  .mobile-menu a:active {
    background: var(--bg-2);
    border-color: var(--border);
  }
}

@media (max-width: 768px) {
  .projects {
    grid-template-columns: 1fr;
  }
  .skills {
    grid-template-columns: 1fr;
  }
  .info-list {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .card {
    padding: 15px;
  }

  .links {
    flex-direction: column !important;
    align-items: stretch !important;
  }

  .links .btn {
    width: 100% !important;
    flex: none !important;
  }

  /* Disable typing animation on mobile */
  h1#heroTitle,
  p#heroSubtitle {
    white-space: normal;
    width: 100%;
    border-right: none;
    animation: none;
  }
}

@media (max-width: 620px) {
  .projects {
    grid-template-columns: 1fr;
  }
  .skills {
    grid-template-columns: 1fr;
  }
  .info-list {
    grid-template-columns: 1fr;
  }
}

/* From Uiverse.io by alexruix
/* The switch - the box around the slider */
/* .switch {
  font-size: 17px;
  position: relative;
  display: inline-block;
  width: 3.5em;
  height: 2em;
} */

/* Hide default HTML checkbox */
/* .switch input {
  opacity: 0;
  width: 0;
  height: 0;
} */

/* The slider */
/* .slider {
  --background: #28096b;
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--background);
  transition: 0.5s;
  border-radius: 30px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 1.4em;
  width: 1.4em;
  border-radius: 50%;
  left: 10%;
  bottom: 15%;
  box-shadow: inset 8px -4px 0px 0px #fff000;
  background: var(--background);
  transition: 0.5s;
}

input:checked + .slider {
  background-color: #522ba7;
}

input:checked + .slider:before {
  transform: translateX(100%);
  box-shadow: inset 15px -4px 0px 15px #fff000;
} */