/* ---------- Theme tokens ---------- */
:root {
  --bg: #090404;
  --card: #1a0f0f;
  --primary: #ff2d3d;
  --primary-dark: #d81f2d;
  --border: rgba(255, 45, 61, 0.25);
  --text: #ffffff;
  --text-secondary: #9ca3af;
  --input-bg: #201313;
  --success: #16a34a;
  --radius-card: 18px;
  --radius-input: 12px;
  --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
  height: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

.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;
}

/* ---------- Page layout ---------- */
.page {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(255, 45, 61, 0.12), transparent 60%),
    var(--bg);
}

.page[hidden] {
  display: none;
}

/* ---------- Card ---------- */
.card {
  position: relative;
  width: 100%;
  max-width: 390px;
  background: linear-gradient(180deg, rgba(40, 22, 22, 0.85), rgba(26, 15, 15, 0.9));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 26px 26px;
  box-shadow:
    0 0 0 1px rgba(255, 45, 61, 0.05),
    0 0 40px rgba(255, 45, 61, 0.18),
    0 24px 60px rgba(0, 0, 0, 0.6);
  animation: card-in 400ms ease both;
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ---------- Logout button ---------- */
.logout-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 9px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.logout-btn:hover {
  color: #fff;
  border-color: var(--border);
  background: rgba(255, 45, 61, 0.1);
}

/* ---------- Header ---------- */
.card__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 24px;
}

.brand-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(255, 45, 61, 0.4);
  margin-bottom: 16px;
}

.card__title {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.card__subtitle {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ---------- Tabs ---------- */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: var(--input-bg);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-input);
  padding: 5px;
  margin-bottom: 22px;
}

.tab {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 0;
  border-radius: 9px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform 120ms ease;
}

.tab:hover {
  color: var(--text);
}

.tab--active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 45, 61, 0.4);
}

.tab:active {
  transform: scale(0.97);
}

/* ---------- Panels ---------- */
.panel {
  animation: panel-in var(--transition) both;
}

.panel[hidden] {
  display: none;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Dropzone ---------- */
.dropzone {
  border: 1.5px dashed rgba(255, 45, 61, 0.4);
  border-radius: var(--radius-input);
  background: rgba(255, 45, 61, 0.04);
  padding: 32px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--primary);
  background: rgba(255, 45, 61, 0.08);
  outline: none;
}

.dropzone--dragover {
  border-color: var(--primary);
  background: rgba(255, 45, 61, 0.14);
  transform: scale(1.01);
}

.dropzone__icon {
  margin-bottom: 14px;
}

.dropzone__text {
  font-size: 13.5px;
  color: var(--text-secondary);
  max-width: 240px;
  margin-bottom: 18px;
}

.dropzone__text strong {
  color: var(--text);
  font-weight: 600;
}

.upload-status {
  font-size: 13px;
  text-align: center;
  margin-top: 14px;
  min-height: 18px;
  transition: color var(--transition);
}

.upload-status--success {
  color: #4ade80;
}

.upload-status--error {
  color: #f87171;
}

/* ---------- Note ---------- */
.note {
  background: rgba(255, 45, 61, 0.08);
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding: 12px 14px;
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
}

.note__label {
  color: var(--primary);
  font-weight: 600;
}

/* ---------- Fields ---------- */
.field {
  margin-bottom: 14px;
}

.field__label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 7px;
}

.req {
  color: var(--primary);
}

.field__control {
  position: relative;
  display: flex;
  align-items: center;
}

.field__icon {
  position: absolute;
  left: 14px;
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: opacity var(--transition);
}

.input {
  width: 100%;
  height: 48px;
  background: var(--input-bg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-input);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 0 14px 0 42px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input::placeholder {
  color: #6b7280;
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 45, 61, 0.18);
}

.field__control:focus-within .field__icon svg {
  stroke: var(--primary);
}

.input--error {
  border-color: #f87171;
}

/* ---------- Advanced toggle ---------- */
.advanced-toggle {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--primary);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  margin: 4px 0 2px;
  cursor: pointer;
  transition: color var(--transition);
}

.advanced-toggle:hover {
  color: #ff5a67;
}

.advanced-toggle__chevron {
  display: inline-flex;
  transition: transform var(--transition);
}

.advanced-toggle[aria-expanded="true"] .advanced-toggle__chevron {
  transform: rotate(180deg);
}

.advanced {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition);
}

.advanced--open {
  grid-template-rows: 1fr;
}

.advanced__inner {
  overflow: hidden;
  min-height: 0;
}

.advanced--open .advanced__inner {
  padding-top: 14px;
}

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: none;
  font-family: inherit;
  font-weight: 700;
  border-radius: var(--radius-input);
  cursor: pointer;
  transition: background var(--transition), transform 120ms ease, box-shadow var(--transition), opacity var(--transition);
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 22px rgba(255, 45, 61, 0.35);
}

.btn--primary:hover:not(:disabled) {
  background: #ff4150;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(255, 45, 61, 0.45);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0) scale(0.985);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn--sm {
  font-size: 14px;
  padding: 10px 22px;
}

.btn--block {
  width: 100%;
  height: 50px;
  font-size: 16px;
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* ---------- Spinner ---------- */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

.spinner[hidden] {
  display: none;
}

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

/* ---------- Toasts ---------- */
.toast-wrap {
  position: fixed;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 380px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
  animation: toast-in var(--transition) both;
}

.toast--leaving {
  animation: toast-out var(--transition) both;
}

.toast--success {
  background: linear-gradient(145deg, #16a34a, #15803d);
}

.toast--error {
  background: linear-gradient(145deg, #dc2626, #b91c1c);
}

.toast__icon {
  display: inline-flex;
  flex-shrink: 0;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-16px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(-12px) scale(0.96);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 420px) {
  .card {
    padding: 26px 20px 22px;
  }

  .card__title {
    font-size: 28px;
  }
}

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