/* ===== Root Theme Variables ===== */
:root {
  --clr-bg: #f8fafc;
  --clr-text: #1e293b;
  --clr-primary: #6366f1;
  --clr-primary-dark: #4f46e5;
  --clr-gradient-start: #4f46e5;
  --clr-gradient-end: #0ea5e9;
  --clr-card-bg: #ffffff;
  --clr-glass-bg: rgba(255, 255, 255, 0.15);
  --clr-glass-border: rgba(255, 255, 255, 0.2);
}
body.theme-dark {
  --clr-bg: #0b1120;
  --clr-text: #e5e7eb;
  --clr-primary: #818cf8;
  --clr-primary-dark: #6366f1;
  --clr-gradient-start: #312e81;
  --clr-gradient-end: #2563eb;
  --clr-card-bg: #1e293b;
  --clr-glass-bg: rgba(30, 41, 59, 0.5);
  --clr-glass-border: rgba(255, 255, 255, 0.1);
}

/* ===== Base Styling ===== */
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--clr-bg);
  color: var(--clr-text);
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.7;
}

/* ===== Navbar ===== */
.navbar {
  backdrop-filter: blur(10px);
  background-color: rgba(15, 23, 42, 0.8) !important;
}
.navbar-brand {
  font-weight: 800;
  letter-spacing: -0.5px;
}
.navbar .nav-link {
  font-weight: 600;
  margin-right: 1rem;
}
.navbar .nav-link.active {
  color: var(--clr-primary) !important;
}

/* ===== Hero Section ===== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background: linear-gradient(135deg, var(--clr-gradient-start) 0%, var(--clr-gradient-end) 100%);
  overflow: hidden;
}
#hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
}
#hero .wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: url('https://raw.githubusercontent.com/AnkitChaurasia1997/assets/main/wave.svg') repeat-x;
  background-size: contain;
  animation: wave 10s linear infinite;
}
@keyframes wave {
  from { background-position-x: 0; }
  to   { background-position-x: 1000px; }
}

/* ===== Section Generic ===== */
section {
  padding: 100px 0;
}
.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--clr-text) !important;
}
h2.section-title.dark-title {
  color: #1e293b !important;
}

/* ===== Skills ===== */
.skill-icon {
  font-size: 2.5rem;
  color: var(--clr-primary-dark);
  margin: 0.5rem 1rem;
  transition: transform 0.3s;
}
.skill-icon:hover {
  transform: translateY(-5px) scale(1.1);
}

/* ===== Projects with Glass Effect ===== */
.project-card {
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--clr-text);
  border-radius: 1rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  box-shadow: 0 1rem 2rem rgba(0,0,0,0.1);
}
.project-card:hover {
  transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
  box-shadow: 0 1.25rem 2rem rgba(0,0,0,0.15);
}
.project-card img {
  object-fit: cover;
  height: 220px;
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
}

/* ===== Timeline ===== */
.timeline {
  border-left: 4px solid var(--clr-primary);
  padding-left: 1.5rem;
}
.timeline li::before {
  content: '';
  position: absolute;
  left: -11px;
  top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--clr-primary);
}

/* ===== Flip Cards ===== */
.flip-card {
  background-color: transparent;
  width: 100%;
  perspective: 1000px;
}
.flip-card-inner {
  position: relative;
  width: 100%;
  height: 280px;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}
.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}
.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
  border-radius: 1rem;
  background-color: var(--clr-card-bg);
  color: var(--clr-text);
}
.flip-card-back {
  transform: rotateY(180deg);
  text-align: start;
}

/* ===== Awards Section ===== */
.scrolling-shelf {
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.award-glass-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: var(--clr-glass-bg);
  border: 1px solid var(--clr-glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 1rem;
  padding: 1.25rem;
  color: var(--clr-text);
  box-shadow: 0 0.75rem 1.25rem rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.award-glass-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.1);
}
.award-glass-card img {
  max-height: 140px;
  object-fit: cover;
  border-radius: 0.75rem;
  cursor: pointer;
}

/* ===== Award Modal ===== */
.award-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  padding-top: 60px;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.8);
  transition: all 0.3s ease-in-out;
  justify-content: center;
  align-items: center;
}
.award-modal.show {
  display: flex;
}
.award-modal img {
  max-width: 90%;
  max-height: 90%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 1rem;
  box-shadow: 0 1rem 2rem rgba(0,0,0,0.5);
  animation: zoomIn 0.3s ease;
}
@keyframes zoomIn {
  from { transform: scale(0.85); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* ===== Footer ===== */
footer {
  background-color: #020617;
  color: #94a3b8;
  padding: 2rem 0;
}