/* ===============================
   Design Tokens (CSS Variables)
   =============================== */
:root {
  /* Brand */
  --color-primary: #2d5be3;
  --color-primary-700: #1a3b8b;
  --color-primary-050: #eef3fb;
  --color-primary-025: #f5f8ff;

  /* Neutrals */
  --color-bg: #f7f9fc;
  --color-surface: #ffffff;
  --color-text: #2d2d2d;
  --color-text-muted: #5f6b7a;
  --color-border: #e0e7ef;
  --color-border-strong: #cfd8e3;

  /* Feedback */
  --color-success: #15a34a;
  --color-danger: #dc2626;
  --color-warning: #d97706;

  /* Effects */
  --shadow-sm: 0 2px 8px rgba(45, 91, 227, 0.12);
  --shadow-md: 0 6px 18px rgba(45, 91, 227, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;

  /* Typography */
  --font-sans: "Segoe UI", Arial, sans-serif;
  --leading: 1.65;

  /* Motion and easing tokens */
  --duration-fast: 150ms;
  --duration: 250ms;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
}

/* ===============================
   Reset & Base
   =============================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--leading);
  font-size: 16px;
}

/* Prefer reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ===============================
   Typography
   =============================== */
h1,
h2,
h3 {
  color: var(--color-primary);
  margin: 0 0 18px;
  font-weight: 600;
  line-height: 1.3;
}

p {
  margin: 0 0 1rem;
  color: var(--color-text);
}

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

/* ===============================
   Links & Buttons
   =============================== */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color .2s ease;
}

a:hover {
  color: var(--color-primary-700);
  text-decoration: underline;
  text-underline-offset: 2px;
}

button,
input[type="submit"],
input[type="button"] {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: background var(--duration) var(--ease-standard), transform var(--duration-fast) ease, box-shadow
    var(--duration) var(--ease-standard), border-color var(--duration) var(--ease-standard);
  box-shadow: var(--shadow-sm);
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background: var(--color-primary-700);
}

button:active,
input[type="submit"]:active,
input[type="button"]:active {
  transform: translateY(1px);
}

button:disabled,
input[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Focus visible for keyboard users */
:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(45, 91, 227, 0.18);
}

/* ===============================
   Header
   =============================== */
header {
  background: var(--color-primary);
  color: #fff;
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  font-size: 1.1rem;
  letter-spacing: .3px;
}

/* ===============================
   Navigation (Top)
   =============================== */
nav {
  background: var(--color-surface);
  box-shadow: 0 2px 6px rgba(45, 91, 227, 0.08);
  padding: 12px 16px;

  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: nowrap;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline;
}

nav a,
nav ul li a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: .98rem;
  transition: color .2s ease, transform .1s ease, background .2s ease;
  white-space: nowrap;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

nav a:hover,
nav ul li a:hover {
  color: var(--color-primary-700);
  background: var(--color-primary-025);
}

nav a.is-active,
nav a[aria-current="page"] {
  color: var(--color-primary-700);
  background: var(--color-primary-025);
  border-bottom: 2px solid var(--color-primary-700);
}

/* ===============================
   Container & Main Content
   =============================== */
.container {
  max-width: 1024px;
  margin: 32px auto;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 28px;
}

.main-content {
  margin-left: 220px; /* align with sidebar width */
  padding: 36px;
  max-width: calc(100% - 220px);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* ===============================
   Sidebar
   =============================== */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0; /* top:0; right:auto; bottom:0; left:0 */
  width: 220px;
  background: var(--color-primary);
  color: #fff;
  padding: 28px 14px;
  box-shadow: 2px 0 10px rgba(45, 91, 227, 0.1);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar h2 {
  font-size: 1.1rem;
  margin: 0 0 12px;
  font-weight: 600;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 8px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar ul li a {
  display: block;
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  font-size: .98rem;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  transition: background .2s ease, padding-left .2s ease, color .2s ease;
}

.sidebar ul li a:hover,
.sidebar ul li a:focus-visible {
  background: var(--color-primary-700);
  color: #f0f4fa;
  padding-left: 18px;
}

.sidebar ul li a.is-active,
.sidebar ul li a[aria-current="page"] {
  background: var(--color-primary-700);
  color: #f0f4fa;
  padding-left: 18px;
  box-shadow: inset 2px 0 0 #ffffff55;
}

/* ===============================
   Forms
   =============================== */
input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  margin: 10px 0 20px 0;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
  background: #fff;
  color: var(--color-text);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 91, 227, 0.15);
  outline: none;
}

.form-group {
  margin-bottom: 16px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

label,
.form-label {
  display: inline-block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--color-text);
}

.input-sm {
  padding: 8px 10px;
  font-size: .95rem;
}
.input-lg {
  padding: 14px 16px;
  font-size: 1.05rem;
}

input:disabled,
select:disabled,
textarea:disabled {
  background: #f5f6f8;
  color: var(--color-text-muted);
  cursor: not-allowed;
}

input:invalid,
select:invalid,
textarea:invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-help {
  font-size: .875rem;
  color: var(--color-text-muted);
  margin-top: -6px;
}

/* ===============================
   Tables
   =============================== */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: block; /* enable horizontal scrolling on small screens */
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--color-surface);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
  border: 0; /* override HTML border attribute */
}

thead,
tbody,
tr {
  display: table;
  width: 100%;
  table-layout: fixed;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: .96rem;
  color: var(--color-text);
}

th {
  background: var(--color-primary-050);
  color: var(--color-primary);
  font-weight: 600;
}

tbody tr:hover {
  background: var(--color-primary-025);
}

tbody tr:nth-child(even) {
  background: #fafcff;
}

tbody tr:focus-within {
  outline: 2px solid var(--color-primary-050);
  outline-offset: -2px;
}

/* Make “Aksi” links feel like actions */
td a {
  font-weight: 600;
  text-decoration: none;
  padding: 4px 6px;
  border-radius: 4px;
}

td a:hover {
  background: var(--color-primary-025);
}

td a.action,
td .action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid transparent;
  font-weight: 600;
}

td a.action:hover,
td .action:hover {
  background: var(--color-primary-025);
  border-color: var(--color-border);
  color: var(--color-primary-700);
}

/* ===============================
   Utilities
   =============================== */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hr {
  height: 1px;
  background: var(--color-border);
  border: 0;
  margin: 16px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  border: 1px solid transparent;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--duration) var(--ease-standard), transform var(--duration-fast) ease, box-shadow
    var(--duration) var(--ease-standard), border-color var(--duration) var(--ease-standard);
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  background: var(--color-primary-700);
}
.btn:active {
  transform: translateY(1px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary-025);
  color: var(--color-primary-700);
  border-color: var(--color-primary-700);
}

.btn--subtle {
  background: var(--color-primary-025);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
.btn--subtle:hover {
  background: var(--color-primary-050);
  color: var(--color-primary-700);
}

.btn--danger {
  background: var(--color-danger);
  border-color: var(--color-danger);
}
.btn--danger:hover {
  filter: brightness(0.95);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}
.card + .card {
  margin-top: 16px;
}

.empty-state {
  text-align: center;
  padding: 32px;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
.empty-state h3 {
  color: var(--color-text);
  margin-bottom: 8px;
}
.empty-state p {
  margin-bottom: 16px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .2px;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-primary-025);
}
.badge--success {
  background: #ecfdf5;
  color: var(--color-success);
  border-color: #bbf7d0;
}
.badge--warning {
  background: #fffbeb;
  color: var(--color-warning);
  border-color: #fde68a;
}
.badge--danger {
  background: #fef2f2;
  color: var(--color-danger);
  border-color: #fecaca;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0;
}
.toolbar .search {
  min-width: 220px;
  max-width: 320px;
}

.stack-xs > * + * {
  margin-top: 6px;
}
.stack-sm > * + * {
  margin-top: 10px;
}
.stack-md > * + * {
  margin-top: 16px;
}
.stack-lg > * + * {
  margin-top: 24px;
}

/* ===============================
   Responsive
   =============================== */
@media (max-width: 1024px) {
  .container {
    margin: 24px 16px;
    padding: 24px;
  }
}

@media (max-width: 800px) {
  .sidebar {
    width: 180px;
    padding: 22px 12px;
  }
  .main-content {
    margin-left: 180px;
    max-width: calc(100% - 180px);
    padding: 28px;
  }
}

@media (max-width: 600px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    flex-direction: row;
    padding: 10px;
    box-shadow: none;
    overflow-x: auto;
    gap: 8px;
  }
  .sidebar h2 {
    display: none;
  }
  .sidebar a {
    margin: 0 6px;
    padding: 10px 12px;
    font-size: .95rem;
    white-space: nowrap;
  }

  .main-content {
    margin-left: 0;
    max-width: 100%;
    padding: 20px;
    border-radius: var(--radius-sm);
  }

  nav {
    gap: 12px;
    padding: 10px 12px;
  }

  th,
  td {
    padding: 10px 12px;
  }
}

footer {
  margin-top: 24px;
  color: var(--color-text-muted);
  text-align: center;
  padding: 16px;
}

/* ===============================
   Print styles: fokus ke konten
   =============================== */
@media print {
  header,
  nav,
  .sidebar,
  footer {
    display: none !important;
  }
  .main-content {
    margin: 0 !important;
    max-width: 100% !important;
    box-shadow: none !important;
    padding: 0 !important;
  }
  table {
    box-shadow: none !important;
    border: 1px solid var(--color-border);
  }
}