/* =================================================================
   Website Kelurahan Mamburungan
   CSS Utama - Modern, Elegan, Clean
   ================================================================= */

/* === CSS CUSTOM PROPERTIES === */
:root {
  --primary: #0EA5E9;
  --primary-dark: #0284C7;
  --primary-light: #7DD3FC;
  --secondary: #10B981;
  --secondary-dark: #059669;
  --text: #0B1220;
  --text-muted: #475569;
  --surface: #F8FAFC;
  --surface-alt: #FFFFFF;
  --muted: #E2E8F0;
  --border: #CBD5E1;
  --error: #EF4444;
  --warning: #F59E0B;
  --success: #10B981;

  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Poppins', var(--font-body);

  --transition: 0.2s ease-in-out;
}

/* === RESET & BASE === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: clamp(0.938rem, 0.9rem + 0.2vw, 1rem);
  line-height: 1.6;
  color: var(--text);
  background-color: var(--surface);
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

h1 { font-size: clamp(2rem, 1.5rem + 2.5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 1.35rem + 2vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2rem); }
h4 { font-size: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem); }
h5 { font-size: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem); }
h6 { font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem); }

p {
  margin-bottom: var(--spacing-md);
  line-height: 1.65;
}

.text-muted {
  color: var(--text-muted);
}

.text-center {
  text-align: center;
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: 960px;
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

/* === SKIP LINK === */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 100;
  border-radius: var(--radius-md);
}

.skip-link:focus {
  top: var(--spacing-sm);
  left: var(--spacing-sm);
}

/* === HEADER & NAVBAR === */
.header {
  background: var(--surface-alt);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
}

.header-top {
  background: var(--primary);
  color: white;
  font-size: 0.875rem;
  padding: var(--spacing-xs) 0;
}

.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.header-info {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.header-info a:hover {
  opacity: 0.9;
}

.navbar {
  padding: var(--spacing-md) 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: 600;
  color: var(--text);
}

.navbar-brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.navbar-title {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.navbar-title strong {
  font-size: 1.125rem;
  color: var(--primary);
}

.navbar-title span {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 400;
}

.navbar-menu {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

.navbar-menu a {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.938rem;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  background: var(--primary);
  color: white;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-sm);
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* === BREADCRUMB === */
.breadcrumb {
  background: var(--surface);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  align-items: center;
  font-size: 0.875rem;
}

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

.breadcrumb-list a:hover {
  text-decoration: underline;
}

.breadcrumb-list span {
  color: var(--text-muted);
}

/* === HERO === */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  color: white;
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: var(--transition);
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:focus-visible {
  outline: 3px solid var(--primary-light);
  outline-offset: 2px;
}

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

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

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

.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: white;
}

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

.btn-outline-dark {
  color: var(--text);
  border-color: var(--border);
}

.btn-outline-dark:hover {
  background: var(--text);
  color: white;
  border-color: var(--text);
}

/* === CARDS === */
.card {
  background: var(--surface-alt);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border);
  height: 100%;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-img {
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.card:hover .card-img img {
  transform: scale(1.05);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.card-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.card-link {
  color: var(--primary);
  font-weight: 500;
}

.card-link:hover {
  text-decoration: underline;
}

/* === GRID === */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* === ALERT BANNER === */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
}

.alert-info {
  background: #DBEAFE;
  border-color: var(--primary);
  color: #1E40AF;
}

.alert-success {
  background: #D1FAE5;
  border-color: var(--success);
  color: #065F46;
}

.alert-warning {
  background: #FEF3C7;
  border-color: var(--warning);
  color: #92400E;
}

.alert-error {
  background: #FEE2E2;
  border-color: var(--error);
  color: #991B1B;
}

/* === TABLE === */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface-alt);
}

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

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
}

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

tbody tr:last-child td {
  border-bottom: none;
}

/* === FORM === */
.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text);
}

.required::after {
  content: ' *';
  color: var(--error);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="file"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-alt);
  transition: var(--transition);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

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

.form-error {
  color: var(--error);
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--error);
}

.form-group.error .form-error {
  display: block;
}

.checkbox-wrapper {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
}

.checkbox-wrapper input[type="checkbox"] {
  width: auto;
  margin-top: 0.25rem;
}

/* === FAQ === */
.faq-item {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--surface);
}

.faq-icon {
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-muted);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* === FOOTER === */
.footer {
  background: var(--text);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
  color: white;
  margin-bottom: var(--spacing-lg);
  font-size: 1.125rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
  color: white;
  text-decoration: underline;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* === BACK TO TOP === */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 40;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
}

/* === TOAST NOTIFICATION === */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 100;
  opacity: 0;
  transition: all 0.3s ease-in-out;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--error);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--surface-alt);
    flex-direction: column;
    padding: var(--spacing-3xl) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    transition: right 0.3s ease-in-out;
    overflow-y: auto;
  }

  .navbar-menu.active {
    right: 0;
  }

  .navbar-menu a {
    width: 100%;
    text-align: left;
  }

  .navbar-toggle {
    display: flex;
    z-index: 60;
  }

  .navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }

  .navbar-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  .grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .header-top .container {
    font-size: 0.813rem;
  }

  .header-info {
    gap: var(--spacing-sm);
  }

  .navbar-brand img {
    width: 40px;
    height: 40px;
  }

  .navbar-title strong {
    font-size: 1rem;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .hero {
    padding: var(--spacing-2xl) 0;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .card {
    padding: var(--spacing-lg);
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* === UTILITY CLASSES === */
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-surface { background-color: var(--surface); }
.bg-white { background-color: var(--surface-alt); }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-white { color: white; }