@font-face {
  font-family: "Irish Grover";
  src: url("../fonts/IrishGrover-Regular.woff2") format("woff2"),
       url("../fonts/IrishGrover-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Infinite Moonlight";
  src: url("../fonts/InfiniteMoonlight-Regular.woff2") format("woff2"),
       url("../fonts/InfiniteMoonlight-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Infinite Moonlight";
  src: url("../fonts/InfiniteMoonlight-Italic.woff2") format("woff2"),
       url("../fonts/InfiniteMoonlight-Italic.woff") format("woff");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

:root {
  --deep: #0E4563;
  --deep-strong: #093349;
  --deep-soft: #2A7BA4;
  --surface: #ECF7FD;
  --paper: #FFFFFF;
  --blossom: #F3A7E5;
  --moon: #FBE3A1;

  --ink: var(--deep);
  --ink-muted: rgba(14, 69, 99, 0.62);
  --line: rgba(14, 69, 99, 0.14);
  --field-bg: #F4FAFE;
  --danger: #A83C72;
  --danger-line: #E08BB8;

  --shell: min(560px, 100%);
  --radius-card: 32px;
  --radius-field: 18px;
  --shadow-card: 0 32px 70px -38px rgba(14, 69, 99, 0.55);
  --shadow-lift: 0 18px 34px -18px rgba(14, 69, 99, 0.65);

  --font-display: "Irish Grover", "Comic Sans MS", cursive;
  --font-body: "Infinite Moonlight", "Trebuchet MS", system-ui, sans-serif;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(120% 70% at 50% -18%, #FFFFFF 0%, rgba(255, 255, 255, 0) 58%),
    var(--surface);
}

/* Tide: elemen tanda tangan halaman, dipakai ulang pada panel sukses. */
.tide {
  position: fixed;
  inset: auto 0 0 0;
  height: clamp(150px, 26vh, 280px);
  pointer-events: none;
  z-index: 0;
}

.tide__layer {
  position: absolute;
  inset: 0;
  width: 200%;
  height: 100%;
}

.tide__layer path { fill: currentColor; }

.tide__layer--far {
  color: rgba(102, 190, 224, 0.30);
  animation: drift 26s linear infinite;
}

.tide__layer--mid {
  color: rgba(42, 123, 164, 0.32);
  animation: drift 19s linear infinite reverse;
}

.tide__layer--near {
  color: rgba(14, 69, 99, 0.30);
  animation: drift 34s linear infinite;
}

@keyframes drift {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.page {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  padding: clamp(72px, 12vh, 128px) 20px clamp(190px, 30vh, 300px);
}

.card {
  position: relative;
  width: var(--shell);
  animation: surface-rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* Kliping ditaruh di lapisan dalam supaya porthole tetap menjorok keluar kartu. */
.card__stage {
  position: relative;
  padding: 0 clamp(20px, 6vw, 44px) clamp(28px, 6vw, 40px);
  background: linear-gradient(180deg, #FFFFFF 0%, #FBFDFF 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

@keyframes surface-rise {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

.masthead {
  text-align: center;
  padding-top: clamp(84px, 17vw, 104px);
}

.porthole {
  position: absolute;
  z-index: 2;
  top: clamp(-70px, -14vw, -56px);
  left: 50%;
  transform: translateX(-50%);
  width: clamp(116px, 26vw, 140px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(120% 120% at 32% 24%, var(--deep-soft) 0%, var(--deep) 46%, var(--deep-strong) 100%);
  box-shadow:
    0 0 0 10px var(--paper),
    0 22px 36px -22px rgba(14, 69, 99, 0.9);
}

.porthole {
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.card.is-complete .porthole {
  opacity: 0;
  transform: translateX(-50%) translateY(-14px) scale(0.9);
}

.porthole__logo {
  width: 74%;
  height: auto;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.28));
}

.porthole__spark {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--moon);
  clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
  animation: twinkle 3.4s ease-in-out infinite;
}

.porthole__spark--a { top: 12%; right: 6%; }
.porthole__spark--b { top: 46%; right: -4%; width: 5px; height: 5px; animation-delay: 1.1s; }
.porthole__spark--c { top: 6%; left: 16%; width: 5px; height: 5px; animation-delay: 2.2s; }

@keyframes twinkle {
  0%, 100% { opacity: 0.25; transform: scale(0.7); }
  50%      { opacity: 1; transform: scale(1); }
}

.masthead__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 11vw, 3.5rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.masthead__subtitle {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 4.4vw, 1.3rem);
  letter-spacing: 0.02em;
  color: var(--deep);
}

.masthead__subtitle::before,
.masthead__subtitle::after {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: clamp(18px, 7vw, 34px);
  height: 2px;
  margin: 0 12px;
  border-radius: 2px;
  background: var(--blossom);
}

.masthead__note {
  margin: 16px auto 0;
  max-width: 440px;
  line-height: 1.6;
  font-style: normal;
  font-size: 0.94rem;
  color: var(--ink-muted);
  text-align: center;
}

.form {
  margin-top: clamp(24px, 6vw, 32px);
  display: grid;
  gap: 18px;
}

.field { display: grid; gap: 7px; }

.field__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  color: var(--deep);
}

.field__flag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
  color: #8E2F6B;
  background: rgba(243, 167, 229, 0.34);
}

.field__flag--soft {
  color: #725200;
  background: #FFE99E;
}

.field__input {
  width: 100%;
  padding: 15px 18px;
  font: inherit;
  font-size: 1.02rem;
  color: var(--deep);
  background: var(--field-bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-field);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.field__input::placeholder {
  color: rgba(14, 69, 99, 0.38);
  font-style: italic;
}

.field__input:hover { background: #EFF7FD; }

.field__input:focus {
  outline: none;
  background: var(--paper);
  border-color: var(--blossom);
  box-shadow: 0 0 0 4px rgba(243, 167, 229, 0.32);
}

.field__hint {
  margin: 0;
  font-size: 0.86rem;
  color: var(--ink-muted);
}

.field__error {
  margin: 0;
  font-size: 0.88rem;
  color: var(--danger);
  display: none;
}

.field.is-invalid .field__error { display: block; }
.field.is-invalid .field__hint { display: none; }

.field.is-invalid .field__input {
  border-color: var(--danger-line);
  background: #FEF6FA;
}

.field.is-invalid .field__input:focus {
  box-shadow: 0 0 0 4px rgba(224, 139, 184, 0.3);
}

.form__alert {
  margin: 0;
  padding: 12px 16px;
  font-size: 0.92rem;
  color: var(--danger);
  background: #FEF3F8;
  border: 1.5px solid var(--danger-line);
  border-radius: 14px;
}

.submit {
  margin-top: 6px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 17px 24px;
  font: inherit;
  font-size: 1.08rem;
  color: var(--surface);
  background: linear-gradient(180deg, var(--deep-soft) -30%, var(--deep) 55%, var(--deep-strong) 100%);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--shadow-lift);
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.submit:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: saturate(1.1);
  box-shadow: 0 24px 40px -20px rgba(14, 69, 99, 0.75);
}

.submit:active:not(:disabled) { transform: translateY(0); }

.submit:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(243, 167, 229, 0.6), var(--shadow-lift);
}

.submit:disabled { cursor: progress; opacity: 0.82; }

.submit__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(236, 247, 253, 0.35);
  border-top-color: var(--surface);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.submit.is-sending .submit__spinner { display: block; }

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

.form__footnote {
  margin: 2px 0 0;
  text-align: center;
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.success {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: end;
  color: var(--surface);
  background: linear-gradient(180deg, var(--deep-soft) 0%, var(--deep) 42%, var(--deep-strong) 100%);
  transform: translateY(100%);
  transition: transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
}

.success[hidden] { display: none; }
.success.is-open { transform: translateY(0); }

.success__crest {
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 74px;
  transform: translateY(-72px);
}

.success__crest path { fill: var(--deep-soft); opacity: 0.55; }

.success__body {
  padding: 36px clamp(24px, 7vw, 46px) clamp(40px, 9vw, 56px);
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 12px;
  align-content: center;
  min-height: 100%;
}

.success__logo {
  width: clamp(96px, 24vw, 124px);
  height: auto;
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.35));
  animation: buoy 4.5s ease-in-out infinite;
}

@keyframes buoy {
  0%, 100% { transform: translateY(0) rotate(-1.5deg); }
  50%      { transform: translateY(-9px) rotate(1.5deg); }
}

.success__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 7vw, 2.2rem);
  letter-spacing: 0.03em;
}

.success__text {
  margin: 0;
  max-width: 30ch;
  color: rgba(236, 247, 253, 0.82);
}

.success__disclaimer {
  margin: 14px 0 0;
  font-size: 0.85rem;
  color: rgba(236, 247, 253, 0.65);
}

.success__again {
  margin-top: 14px;
  padding: 13px 28px;
  font: inherit;
  color: var(--deep);
  background: var(--surface);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease;
}

.success__again:hover { transform: translateY(-2px); background: var(--blossom); }

.success__again:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(243, 167, 229, 0.7);
}

@media (max-width: 420px) {
  body { font-size: 16px; }
  .card__stage { border-radius: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}