/* ============================================================
   LOGIN — KARTU LETTERHEAD (biru + kuning + putih, tema terang)
   Layout tunggal, sederhana, dan tahan-banting: tanpa elemen
   position:fixed supaya tidak rawan berantakan di berbagai
   ukuran layar/zoom. Header navy menampung logo (logo sudah
   gelap, jadi ditaruh di atas roundel PUTIH agar tetap terbaca),
   badan kartu tetap putih terang. Token warna & font disamakan
   dengan report.css (sim-arrohmah/references/laporan).
   ============================================================ */
:root {
  --c-primary: #085494;
  --c-primary-dark: #0f2747;
  --c-accent: #fdb102;
  --c-accent-dark: #d97706;
  --c-accent-hover: #e59f00;
  --c-white: #ffffff;
  --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --c-text-muted-brand: rgba(15, 39, 71, 0.58);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  color: var(--c-primary-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  background: #eef3f9;
  background-image:
    radial-gradient(ellipse 70% 55% at 85% 0%, rgba(253, 177, 2, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 5% 100%, rgba(8, 84, 148, 0.08) 0%, transparent 60%);
  background-repeat: no-repeat;
}

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 100;
  padding: 12px 24px;
  background: var(--c-primary-dark);
  color: var(--c-white);
  font-weight: 600;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  transition: top 200ms ease;
}

.skip-link:focus { top: 0; }

/* ============================================================
   PAGE / CARD
   ============================================================ */
.login-page {
  width: 100%;
  max-width: 420px;
}

.login-card {
  background: var(--c-white);
  border-radius: 18px;
  box-shadow: 0 24px 56px rgba(15, 39, 71, 0.20);
  overflow: hidden;
}

/* Bilah kuning penuh lebar di puncak kartu — kombinasi tiga
   warna brand langsung terlihat sejak pandangan pertama:
   kuning -> navy (header) -> putih (badan). */
.card-accent-bar {
  height: 6px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
}

/* ============================================================
   HEADER (letterhead navy)
   ============================================================ */
.card-header {
  background: linear-gradient(155deg, var(--c-primary-dark) 0%, var(--c-primary) 100%);
  padding: 34px 28px 28px;
  text-align: center;
}

.header-seal {
  width: 84px;
  height: 84px;
  margin: 0 auto 16px;
  background: var(--c-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.header-seal img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.header-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--c-white);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1.25;
}

.header-rule {
  width: 46px;
  height: 2px;
  margin: 14px auto;
  background: var(--c-accent);
}

.header-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  letter-spacing: 1px;
  line-height: 1.6;
  max-width: 260px;
  margin: 0 auto;
}

.header-tagline {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  color: var(--c-white);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.header-tagline .dot {
  width: 4px;
  height: 4px;
  background: var(--c-accent);
  border-radius: 50%;
}

/* ============================================================
   BODY (form, terang / putih)
   ============================================================ */
.card-body {
  padding: 30px 28px 28px;
}

.card-desc {
  font-size: 0.8125rem;
  color: var(--c-text-muted-brand);
  text-align: center;
  line-height: 1.55;
  margin-bottom: 22px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.field { position: relative; }

.field-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #64748B;
  z-index: 1;
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: color 220ms ease;
}

.field-input {
  width: 100%;
  padding: 14px 44px;
  font-family: var(--font-main);
  font-size: 0.9375rem;
  color: var(--c-primary-dark);
  background: #F0F7FF;
  border: 1.5px solid #DCE7F5;
  border-radius: 7px;
  outline: none;
  transition: border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
  -webkit-appearance: none;
}

.field-input:hover { border-color: #7FA8D6; }

.field-input:focus {
  border-color: var(--c-primary);
  background: var(--c-white);
  box-shadow: 0 0 0 3px rgba(8, 84, 148, 0.14);
}

.field-input:focus ~ .field-icon { color: var(--c-primary-dark); }

.field-label {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 44px;
  font-size: 0.9375rem;
  color: #64748B;
  pointer-events: none;
  transition: top 220ms ease, font-size 220ms ease, color 220ms ease;
  background: transparent;
  padding: 0 2px;
}

.field-input:focus ~ .field-label,
.field-input:not(:placeholder-shown) ~ .field-label {
  top: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  background: var(--c-white);
}

.field-input:invalid:not(:placeholder-shown):not(:focus) {
  border-color: #DC2626;
  background: #FEF2F2;
}

.field-input:invalid:not(:placeholder-shown):not(:focus) ~ .field-label,
.field-input:invalid:not(:placeholder-shown):not(:focus) ~ .field-icon {
  color: #DC2626;
}

.field-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #64748B;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: color 220ms ease;
}

.field-toggle:hover { color: var(--c-primary); }

.field-toggle:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* --- Submit Button --- */
.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  margin-top: 4px;
  font-family: var(--font-main);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-hover) 100%);
  border: none;
  border-radius: 7px;
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: transform 220ms ease, box-shadow 220ms ease;
  position: relative;
  overflow: hidden;
}

.btn-submit::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--c-accent-hover) 0%, var(--c-accent-dark) 100%);
  opacity: 0;
  transition: opacity 220ms ease;
}

.btn-submit:hover::after { opacity: 1; }

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(253, 177, 2, 0.38);
}

.btn-submit:active {
  transform: translateY(0);
  box-shadow: 0 3px 10px rgba(253, 177, 2, 0.25);
}

.btn-submit:focus-visible {
  outline: 2px solid var(--c-primary-dark);
  outline-offset: 2px;
}

.btn-submit span, .btn-submit svg { position: relative; z-index: 1; }
.btn-submit.is-loading span { opacity: 0; }
.btn-submit.is-loading svg { opacity: 0; }

.btn-submit .spinner {
  position: absolute;
  z-index: 1;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(15, 39, 71, 0.2);
  border-top-color: var(--c-primary-dark);
  border-radius: 50%;
  opacity: 0;
  animation: none;
}

.btn-submit.is-loading .spinner {
  opacity: 1;
  animation: spin 600ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   FOOTER LINKS (dalam kartu)
   ============================================================ */
.card-links {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid #E0E8F8;
  text-align: center;
}

.card-links p {
  font-size: 0.875rem;
  color: var(--c-text-muted-brand);
  margin-bottom: 8px;
}

.card-links p:last-child { margin-bottom: 0; }

.link-register {
  color: var(--c-primary);
  font-weight: 700;
  text-decoration: none;
  position: relative;
  transition: color 220ms ease;
}

.link-register::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
}

.link-register:hover { color: var(--c-primary-dark); }
.link-register:hover::after { transform: scaleX(1); }

.link-register:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.login-footnote {
  margin-top: 22px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--c-text-muted-brand);
  letter-spacing: 0.03em;
}

/* ============================================================
   RESPONSIVE: MOBILE
   ============================================================ */
@media (max-width: 480px) {
  body { padding: 24px 14px; }

  .login-card { border-radius: 14px; }

  .card-header { padding: 28px 22px 24px; }

  .header-seal { width: 68px; height: 68px; margin-bottom: 14px; }

  .header-title { font-size: 1.25rem; }

  .header-subtitle { font-size: 0.6875rem; max-width: 220px; }

  .header-tagline { gap: 8px; padding: 7px 14px; font-size: 0.625rem; }

  .card-body { padding: 24px 20px 22px; }

  .field-input { padding: 12px 40px; font-size: 0.875rem; }
  .field-label { font-size: 0.875rem; left: 40px; }
  .field-icon { left: 12px; }

  .btn-submit { padding: 12px; font-size: 0.875rem; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}