/* ===== LPPM STIKES BBM - Main Stylesheet ===== */

:root {
  --primary-color: #1e40af;
  --secondary-color: #0369a1;
  --accent-color: #0ea5e9;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --light-bg: #f8fafc;
  --dark-text: #1f2937;
  --border-color: #e5e7eb;
  --white: #ffffff;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  background-color: var(--white);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--dark-text);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
  color: #4b5563;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-color);
}

/* ===== Navbar ===== */
nav {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  color: var(--dark-text);
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--dark-text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 3rem;
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #0284c7;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--white);
  color: var(--primary-color);
  margin-left: 1rem;
}

.btn-secondary:hover {
  background-color: #f0f9ff;
  transform: translateY(-2px);
}

/* ===== Container ===== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.1rem;
  color: #6b7280;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Grid Layout ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

/* ===== Cards ===== */
.card {
  background: var(--white);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  color: var(--primary-color);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card-text {
  color: #6b7280;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Features Section ===== */
.features {
  background: var(--light-bg);
}

.feature-item {
  text-align: center;
  padding: 2rem;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
}

/* ===== Footer ===== */
footer {
  background: var(--dark-text);
  color: #e5e7eb;
  padding: 3rem 0;
  margin-top: 5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section a {
  color: #d1d5db;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 2rem;
  text-align: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

.footer-bottom p {
  color: #9ca3af;
  margin: 0;
}

/* ===== Tables ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

thead {
  background: var(--primary-color);
  color: var(--white);
}

th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
  background: var(--light-bg);
}

/* ===== Forms ===== */
form {
  background: var(--light-bg);
  padding: 2rem;
  border-radius: 0.75rem;
  margin: 2rem 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--dark-text);
}

input, textarea, select {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  color: #6b7280;
}

.breadcrumb a {
  color: var(--primary-color);
}

.breadcrumb span {
  color: #d1d5db;
}

/* ===== Page Title ===== */
.page-title {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: var(--white);
  padding: 3rem 0;
  text-align: center;
}

.page-title h1 {
  color: var(--white);
  font-size: 2.5rem;
}

.page-title p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    background: var(--white);
    gap: 0;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    display: none;
    width: 200px;
  }

  .nav-links.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero {
    padding: 3rem 1rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .btn-secondary {
    margin-left: 0;
    margin-top: 1rem;
    width: 100%;
  }

  .section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 1rem;
  }

  .logo {
    font-size: 1rem;
  }

  .hero h1 {
    font-size: 1.5rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 0.9rem;
  }

  th, td {
    padding: 0.75rem 0.5rem;
  }
}