/* === Google Font === */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;500;700&display=swap');

:root {
  --clr-primary: #bb471e;
  --clr-secondary: #e36a3a;
  --clr-accent: #4ac6ff;
  --clr-bg: #fff8f2;
  --clr-bg-light: #fff3e8;
  --clr-border: #ffd7c2;
  --clr-text: #333;
  --clr-white: #fff;
}

body.dark {
  --clr-primary: #ffa76d;
  --clr-secondary: #ff7f3f;
  --clr-accent: #5fd4ff;
  --clr-bg: #121212;
  --clr-bg-light: #1e1e1e;
  --clr-border: #444;
  --clr-text: #f5f5f5;
  --clr-white: #222;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background-color: var(--clr-bg);
  color: var(--clr-text);
  transition: background-color 0.5s ease, color 0.5s ease;
}

a, button {
  transition: color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

a {
  color: var(--clr-secondary);
  text-decoration: none;
}

a:hover {
  color: var(--clr-accent);
  text-decoration: underline;
}

a:focus, button:focus {
  outline: 2px dashed var(--clr-primary);
  outline-offset: 4px;
}

strong {
  color: var(--clr-primary);
}

.header {
  background-color: var(--clr-bg-light);
  padding: 40px 20px;
  text-align: center;
  border-bottom: 3px solid var(--clr-secondary);
  transition: background-color 0.5s ease, border-color 0.5s ease;
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.header h2 {
  font-size: 1.2rem;
  font-weight: normal;
  color: #555;
}

nav {
  position: sticky;
  top: 0;
  background-color: rgba(255,255,255,0.8);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid var(--clr-border);
  padding: 10px 20px;
  text-align: center;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
  transition: background-color 0.5s ease, border-color 0.5s ease;
}

body.dark nav {
  background-color: rgba(18,18,18,0.8);
}

nav a {
  color: var(--clr-primary);
  margin: 0 12px;
  font-weight: bold;
  font-size: 1rem;
}

nav a:hover {
  color: var(--clr-accent);
}

section {
  padding: 40px 20px;
  max-width: 1000px;
  margin: auto;
  opacity: 0;
  transform: translateY(30px);
  will-change: opacity, transform;
  transition: all 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

section + section {
  border-top: 1px dashed var(--clr-border);
  padding-top: 60px;
  margin-top: 40px;
}

section h2 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  border-left: 5px solid var(--clr-secondary);
  padding-left: 10px;
}

ul {
  list-style: none;
  padding-left: 0;
}

li::before {
  margin-right: 10px;
  color: var(--clr-accent);
}

.skills li {
  background: var(--clr-bg-light);
  margin-bottom: 10px;
  padding: 10px 15px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.project-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.project-card {
  background-color: rgba(255, 255, 255, 0.85);
  border: 2px solid var(--clr-border);
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, background-color 0.5s ease, border-color 0.5s ease;
  backdrop-filter: blur(10px);
}

body.dark .project-card {
  background-color: rgba(34, 34, 34, 0.85);
}

.project-card:hover {
  transform: scale(1.02);
  border-color: var(--clr-accent);
}

.project-card h3 {
  margin-top: 0;
  color: var(--clr-primary);
}

.karre-links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.karre-btn {
  background-color: var(--clr-secondary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 25px;
  font-weight: bold;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.karre-btn:hover {
  background-color: var(--clr-accent);
  transform: translateY(-2px) scale(1.02);
}

footer {
  background-color: var(--clr-bg-light);
  text-align: center;
  padding: 20px;
  border-top: 2px solid var(--clr-secondary);
  transition: background-color 0.5s ease, border-color 0.5s ease;
}

footer p {
  margin: 0;
}

.social-links a {
  margin: 0 10px;
  color: var(--clr-primary);
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--clr-primary);
  color: #fff;
  padding: 10px;
  border-radius: 50%;
  font-size: 16px;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: background 0.3s ease, opacity 0.3s ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--clr-accent);
}

#toggle-theme {
  background-color: var(--clr-secondary);
  border: none;
  color: white;
  font-size: 20px;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  margin-left: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#toggle-theme:hover {
  transform: rotate(360deg) scale(1.1);
  background-color: var(--clr-primary);
}

.icon-transition {
  transition: all 0.3s ease-in-out;
}

@media (max-width: 600px) {
  nav a {
    display: block;
    margin: 10px 0;
  }

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