:root {
  --bg-main: #f3f4f6;
  --card-bg: #ffffff;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --accent-hover: #1d4ed8;
  --text-main: #111827;
  --text-muted: #6b7280;
  --border-soft: #e5e7eb;
  --error: #dc2626;
  --success: #16a34a;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.18);
  --radius-lg: 18px;
  --radius-md: 10px;
  --transition-fast: 0.18s ease-out;
  --transition-normal: 0.25s ease-out;
}

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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top left, #e0f2fe 0, #f3f4f6 35%, #e5e7eb 100%);
  color: var(--text-main);
}

/* Layout utama */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* Card login */
.login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 32px 28px 28px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  backdrop-filter: blur(10px);
  animation: cardFadeIn 0.35s ease-out;
}

/* Logo */
.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.logo-wrapper {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eef6ff, #ffffff);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
  border: 1px solid rgba(37, 99, 235, 0.15);
}

.logo-image {
  width: 78%;
  height: 78%;
  object-fit: contain;
  display: block;
}

/* Judul & subjudul */
.login-title {
  margin: 10px 0 0;
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: "Poppins", system-ui, sans-serif;
}

.login-subtitle {
  margin: 8px 0 18px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Tab switch */
.tab-switch {
  display: flex;
  gap: 6px;
  background-color: #f3f4f6;
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 14px;
}

.tab-button {
  flex: 1;
  border-radius: 999px;
  border: none;
  padding: 7px 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: transparent;
  color: #6b7280;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.tab-button.active {
  background-color: #ffffff;
  color: var(--accent);
  box-shadow: 0 6px 14px rgba(148, 163, 184, 0.5);
  transform: translateY(-1px);
}

/* Pesan notifikasi global */
.login-message {
  display: none;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  padding: 10px 11px;
  margin-bottom: 14px;
  border-width: 1px;
  border-style: solid;
}

.login-message.error {
  display: block;
  color: var(--error);
  background-color: rgba(220, 38, 38, 0.06);
  border-color: rgba(220, 38, 38, 0.4);
}

.login-message.success {
  display: block;
  color: var(--success);
  background-color: rgba(22, 163, 74, 0.06);
  border-color: rgba(22, 163, 74, 0.4);
}

/* FORM SECTIONS */
.form-section {
  display: none;
  margin-top: 2px;
  flex-direction: column;
  gap: 14px;
}

.form-section.is-active {
  display: flex;
}

/* Form fields */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.82rem;
  font-weight: 500;
  color: #4b5563;
}

input[type="email"],
input[type="password"],
input[type="text"],
select {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  padding: 10px 12px;
  font-size: 0.9rem;
  outline: none;
  background-color: #f9fafb;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    transform 0.1s ease-out;
}

input::placeholder {
  color: #9ca3af;
  font-size: 0.86rem;
}

input[type="email"]:focus,
input[type="password"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--accent);
  background-color: #ffffff;
  box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.15),
    0 0 0 4px rgba(191, 219, 254, 0.75);
  transform: translateY(-1px);
}

/* Input + tombol show/hide password */
.input-with-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
}

.input-with-toggle input {
  flex: 1;
}

.password-toggle {
  border: none;
  background: transparent;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  cursor: pointer;
  padding: 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition:
    color var(--transition-fast),
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.password-toggle:hover {
  color: var(--accent-hover);
  transform: translateY(-1px);
}

/* Kontingen mode */
.kontingen-mode {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.radio-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid #e5e7eb;
  background-color: #f9fafb;
  font-size: 0.78rem;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.radio-chip input {
  accent-color: var(--accent);
}

.radio-chip span {
  font-weight: 500;
  color: #4b5563;
}

.radio-chip.active {
  background-color: #eef2ff;
  border-color: rgba(79, 70, 229, 0.7);
  box-shadow: 0 0 0 1px rgba(79, 70, 229, 0.15);
  transform: translateY(-1px);
}

.radio-chip.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.helper-text {
  font-size: 0.78rem;
  color: #9ca3af;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Error dekat field */
.form-group.has-error input,
.form-group.has-error select {
  border-color: var(--error);
  background-color: #fef2f2;
  box-shadow: none;
}

.field-error {
  font-size: 0.78rem;
  color: var(--error);
  margin-top: 3px;
}

/* Tombol login / buat akun */
.btn-login {
  margin-top: 6px;
  border: none;
  border-radius: 999px;
  padding: 11px 14px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: "Inter", system-ui, sans-serif;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), #1e40af);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.35);
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal),
    background-position 0.25s ease-out,
    filter var(--transition-fast),
    opacity var(--transition-fast);
  background-size: 140% 140%;
  background-position: 0% 50%;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.45);
  background-position: 100% 50%;
}

.btn-login:active {
  transform: translateY(0px) scale(0.98);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.4);
  filter: brightness(0.97);
}

.btn-login:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  box-shadow: none;
}

/* Link lupa password */
.forgot-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  text-align: center;
  transition:
    color var(--transition-fast),
    transform var(--transition-fast);
}

.forgot-link:hover {
  color: var(--accent-hover);
  transform: translateY(-1px);
}

/* Responsive kecil */
@media (max-width: 480px) {
  .login-card {
    padding: 24px 18px 20px;
    border-radius: 16px;
  }

  .login-title {
    font-size: 1.15rem;
  }

  .login-subtitle {
    font-size: 0.85rem;
  }
}

/* Animasi masuk */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}