:root {
  color-scheme: dark;
  --bg: #000;
  --bg-alt: #0a0a0a;
  --card: #111;
  --card-border: #222;
  --fg: #fff;
  --muted: #888;
  --muted-2: #aaa;
  --input-bg: #0d0d0d;
  --error: #ff5c5c;
  --success: #4ade80;
  --bg-word-stroke: rgba(255, 255, 255, 0.07);
  --font-display: "Big Shoulders Display", sans-serif;
  --font-body: "Space Grotesk", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --font-graffiti: "Permanent Marker", cursive;
  --radius: 16px;
  --radius-sm: 10px;
}

/* ===== Light mode — selaras dengan landing page (dark tetap default) ===== */
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f2ed;
  --bg-alt: #ffffff;
  --card: #ffffff;
  --card-border: #e4dfd6;
  --fg: #141414;
  --muted: #6f6a61;
  --muted-2: #57534a;
  --input-bg: #f8f6f1;
  --error: #d92d20;
  --success: #12805c;
  --bg-word-stroke: rgba(0, 0, 0, 0.08);
}

/* ===== Theme toggle (bulan / matahari) — sama seperti landing ===== */
.theme-toggle {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition:
    border-color 0.3s ease,
    background 0.3s ease,
    transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
    color 0.3s ease;
}
.theme-toggle:hover {
  border-color: var(--fg);
  background: rgba(127, 127, 127, 0.12);
  transform: translateY(-2px) rotate(8deg);
}
.theme-toggle:active {
  transform: translateY(0) scale(0.94);
}
/* Dark mode (default): tampilkan matahari -> klik untuk ke light */
.theme-toggle .theme-icon-moon {
  display: none;
}
:root[data-theme="light"] .theme-toggle .theme-icon-sun {
  display: none;
}
:root[data-theme="light"] .theme-toggle .theme-icon-moon {
  display: block;
}
.auth-topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s ease, color 0.35s ease;
}

/* background giant text */
.auth-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.auth-bg-word {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-4deg);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(100px, 18vw, 260px);
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--bg-word-stroke);
  white-space: nowrap;
  user-select: none;
}
.auth-bg-grain {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(255,255,255,0.06), transparent 70%),
    radial-gradient(700px 500px at 90% 90%, rgba(255,255,255,0.05), transparent 70%);
}
:root[data-theme="light"] .auth-bg-grain {
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(0,0,0,0.05), transparent 70%),
    radial-gradient(700px 500px at 90% 90%, rgba(0,0,0,0.04), transparent 70%);
}

/* topbar — ramping */
.auth-topbar {
  position: relative;
  z-index: 2;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.auth-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-2);
  border: 1px solid var(--card-border);
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none;
  transition: all .25s ease;
  background: rgba(127, 127, 127, 0.08);
}
.auth-back:hover {
  color: var(--fg);
  border-color: var(--fg);
  transform: translateY(-1px);
}

/* layout — proporsional 100% zoom */
.auth-wrap {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px 28px;
}
.auth-card {
  width: 100%;
  max-width: 860px;
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.02) inset;
  animation: rise .6s cubic-bezier(.16,1,.3,1);
  transition: background-color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
:root[data-theme="light"] .auth-card {
  box-shadow: 0 30px 80px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.03) inset;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(24px) scale(.99); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* left visual — minimal, ikut tinggi form */
.auth-visual {
  position: relative;
  min-height: 0;
  overflow: hidden;
}
.auth-visual-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(1.05);
  transform: scale(1.02);
  transition: transform 8s ease;
}
.auth-card:hover .auth-visual-img { transform: scale(1.08); }
.auth-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.55) 55%, rgba(0,0,0,0.92) 100%);
}
.auth-visual-content {
  position: absolute;
  inset: 0;
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 10px;
  /* Panel foto selalu gelap (overlay hitam) di kedua tema -> teks tetap putih */
  color: #fff;
}
.auth-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ddd;
  margin-bottom: 6px;
}
.auth-eyebrow.dark { color: var(--muted); }
.auth-visual-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 4vw, 54px);
  line-height: 0.95;
  letter-spacing: 0.01em;
}
.auth-visual-sub {
  margin-top: 2px;
  color: #c9c9c9;
  font-size: 13px;
  line-height: 1.6;
  max-width: 30ch;
}

/* right form — compact tapi tetap lega */
.auth-form-side {
  padding: 34px 36px;
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: background-color 0.35s ease;
}
.auth-form-head {
  margin-bottom: 4px;
}
.auth-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 3vw, 38px);
  line-height: 1;
  letter-spacing: 0.01em;
}
.auth-desc {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

/* tabs — compact */
.auth-tabs {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 4px;
  margin: 20px 0 22px;
  transition: background-color 0.35s ease, border-color 0.35s ease;
}
.auth-tab {
  position: relative;
  z-index: 1;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: color .25s ease;
}
.auth-tab.active { color: var(--bg); font-weight: 500; }
.auth-tab-indicator {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  background: var(--fg);
  border-radius: 999px;
  transition: transform .35s cubic-bezier(.16,1,.3,1), background-color .35s ease;
}
.auth-tabs.register .auth-tab-indicator { transform: translateX(100%); }

/* forms — jarak seimbang, satu kolom */
.auth-form { display: none; flex-direction: column; gap: 16px; }
.auth-form.active { display: flex; animation: fadeSlide .35s ease; }
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--input-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  transition: border-color .2s ease, box-shadow .2s ease, background-color .35s ease;
}
.input-wrap:focus-within {
  border-color: var(--fg);
  box-shadow: 0 0 0 3px rgba(127,127,127,0.18);
  background: var(--input-bg);
}
.input-wrap svg { color: var(--muted); flex-shrink: 0; }
.input-wrap input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 12px 0;
  min-width: 0;
}
.input-wrap input::placeholder { color: var(--muted); }
.toggle-pass {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 15px;
  opacity: 0.7;
  transition: opacity .2s;
  padding: 4px;
  color: var(--muted);
}
.toggle-pass:hover { opacity: 1; }

.field-error {
  font-size: 12px;
  color: var(--error);
  min-height: 0;
  display: none;
}
.field-error.show { display: block; }
.input-wrap.invalid { border-color: var(--error); box-shadow: 0 0 0 3px rgba(255,92,92,0.1); }

.auth-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  margin-top: -4px;
}
.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--muted-2);
  font-family: var(--font-body) !important;
  font-size: 13px !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  user-select: none;
}
.remember input { display: none; }
.checkmark {
  width: 16px;
  height: 16px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all .2s ease;
  flex-shrink: 0;
}
.remember input:checked + .checkmark {
  background: var(--fg);
  border-color: var(--fg);
  color: var(--bg);
}
.remember input:checked + .checkmark::after { content: "✓"; font-weight: 700; }
.remember.agree { align-items: flex-start; line-height: 1.5; }

.link, .link-btn {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-size: 13px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: color .2s ease;
}
.link:hover, .link-btn:hover { color: var(--muted); }

/* buttons — samakan dengan style.css */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1), box-shadow .3s ease, background .3s ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}
.btn-solid { background: var(--fg); color: var(--bg); }
.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(127,127,127,0.35); }
.btn-solid:active { transform: translateY(0) scale(.97); }
.btn-ghost { background: transparent; color: var(--fg); border: 1px solid var(--card-border); }
.btn-ghost:hover { border-color: var(--fg); transform: translateY(-2px); }
.btn-lg { padding: 13px 26px; font-size: 12px; }
.full-width { width: 100%; margin-top: 2px; }
.btn.loading { pointer-events: none; opacity: .8; }
.btn.loading .btn-text::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-left: 10px;
  vertical-align: -2px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.switch-text {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
  line-height: 1.6;
}

/* toast */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 100px);
  background: var(--fg);
  color: var(--bg);
  font-size: 13.5px;
  font-weight: 500;
  padding: 13px 22px;
  border-radius: 999px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  opacity: 0;
  transition: all .4s cubic-bezier(.16,1,.3,1), background-color .35s ease, color .35s ease;
  z-index: 99;
  max-width: calc(100vw - 48px);
  text-align: center;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.toast.error { background: var(--error); color: #fff; }

/* layar pendek (laptop 100% zoom) — padatkan lagi */
@media (max-height: 800px) and (min-width: 861px) {
  .auth-topbar { padding: 10px 24px; }
  .auth-wrap { padding: 8px 24px 18px; }
  .auth-form-side { padding: 26px 34px; }
  .auth-tabs { margin: 16px 0 18px; }
  .auth-form { gap: 13px; }
  .input-wrap input { padding: 11px 0; }
  .btn-lg { padding: 12px 26px; }
}

/* responsive */
@media (max-width: 860px) {
  .auth-wrap { padding: 20px 20px 40px; }
  .auth-card { grid-template-columns: 1fr; max-width: 440px; }
  .auth-visual { min-height: 190px; }
  .auth-visual-content { padding: 24px 22px; }
  .auth-visual-title { font-size: 36px; }
  .auth-visual-sub { display: none; }
  .auth-form-side { padding: 30px 24px; }
}
@media (max-width: 420px) {
  .auth-topbar { padding: 12px 16px; }
  .auth-wrap { padding: 8px 16px 32px; }
  .auth-row { flex-direction: column; align-items: flex-start; gap: 10px; }
}