/* === Global Reset and Variables === */
:root {
  --primary-color: #00b7ff;
  --secondary-color: #00ffa3;
  --accent-color: #ffde59;
  --background-color: #0d0d0f;
  --card-background: #16171a;
  --text-color: #e8f0ff;
  --muted-text: #a9b3c1;
  --border-color: #242424;
  --shadow-glow: 0 0 18px rgba(0, 183, 255, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0d0d0f 0%, #101317 100%);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* === Header === */
header {
  background: rgba(20, 20, 22, 0.85);
  backdrop-filter: blur(10px);
  padding: 20px 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

header h1 {
  font-size: 1.8em;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  animation: fadeInDown 1.2s ease;
  margin-bottom: 10px;
}

/* === Navigation === */
nav ul {
  list-style: none;
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
  justify-content: center;
}

nav ul li a {
  color: var(--muted-text);
  font-weight: 500;
  font-size: 1.05em;
  transition: color 0.3s, transform 0.2s;
  position: relative;
}

nav ul li a::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s ease;
  border-radius: 2px;
}

nav ul li a:hover::after {
  width: 100%;
}

nav ul li a:hover {
  color: var(--secondary-color);
  transform: translateY(-2px);
}

/* === Main Layout === */
main {
  flex: 1;
  padding: 70px 25px;
  max-width: 1100px;
  margin: auto;
  width: 100%;
  animation: fadeIn 1.2s ease;
}

/* === Sections === */
section {
  background: var(--card-background);
  padding: 35px;
  border-radius: 14px;
  margin-bottom: 35px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.6), 0 0 10px rgba(0, 255, 163, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

section:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* === Headings === */
h2 {
  color: var(--secondary-color);
  font-size: 1.5em;
  margin-bottom: 20px;
  border-left: 5px solid var(--primary-color);
  padding-left: 12px;
  font-weight: 600;
}

/* === Home Page Intro === */
.home-intro {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 10px;
}

.intro-text {
  flex: 2;
  animation: slideInLeft 1s ease;
  min-width: 250px;
}

.intro-text h2 {
  color: var(--accent-color);
  border: none;
  font-size: 2em;
}

.intro-photo {
  flex: 1;
  text-align: center;
  animation: slideInRight 1s ease;
  min-width: 180px;
}

.intro-photo img {
  width: 100%;
  max-width: 240px;
  border-radius: 50%;
  border: 4px solid var(--secondary-color);
  box-shadow: 0 0 20px var(--secondary-color);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}

.intro-photo img:hover {
  transform: scale(1.06) rotate(3deg);
  box-shadow: 0 0 35px var(--primary-color);
}

/* === Buttons === */
.btn-group {
  margin-top: 25px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.btn {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: #0e0e0e;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s ease;
  text-align: center;
}

.btn:hover {
  background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 15px rgba(0, 255, 163, 0.3);
}

/* === Lists === */
ul {
  list-style-type: none;
}

ul li {
  margin: 12px 0;
  padding-left: 20px;
  position: relative;
  word-wrap: break-word;
}

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

/* === Bio-data Table === */
.biodata-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  border-radius: 10px;
  overflow: hidden;
  background: #101215;
  box-shadow: 0 0 20px rgba(0, 183, 255, 0.05);
}

.biodata-table th,
.biodata-table td {
  padding: 14px 16px;
  border: 1px solid var(--border-color);
}

.biodata-table th {
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  color: #000;
  text-align: left;
  font-weight: 600;
  width: 35%;
}

.biodata-table td {
  background: var(--card-background);
}

.biodata-table tr:nth-child(even) td {
  background: #18191d;
}

.biodata-table tr:hover td {
  background: #212227;
}

/* === Footer === */
footer {
  background: rgba(20, 20, 22, 0.9);
  color: var(--muted-text);
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  border-top: 1px solid var(--border-color);
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* === Responsive Fixes === */
@media (max-width: 1024px) {
  main {
    padding: 50px 20px;
  }
}

@media (max-width: 768px) {
  .home-intro {
    flex-direction: column;
    text-align: center;
    gap: 25px;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }

  header {
    flex-direction: column;
    align-items: center;
    padding: 15px 20px;
  }

  .intro-photo img {
    max-width: 180px;
  }

  .btn-group {
    justify-content: center;
  }

  section {
    padding: 25px;
    margin-bottom: 25px;
  }

  h2 {
    font-size: 1.3em;
    padding-left: 10px;
  }
}

@media (max-width: 480px) {
  .intro-text h2 {
    font-size: 1.6em;
  }

  .btn {
    padding: 10px 18px;
    font-size: 0.95em;
  }
}