/* ─────────────────────────────────────────────────────────────
   auth.css  —  TradeMind authentication shell
   ───────────────────────────────────────────────────────────── */

/* ── Page shell ────────────────────────────────────────────── */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(0, 201, 167, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 90%, rgba(0, 130, 255, 0.07) 0%, transparent 55%),
    radial-gradient(circle at top, #123352 0%, #080e1a 65%, #050816 100%);
  padding: 24px;
  animation: fadeIn 450ms ease-out;
}

/* ── Card ──────────────────────────────────────────────────── */
.auth-card {
  width: min(520px, 92vw);
  background: #0f1f36;
  border: 1px solid rgba(30, 58, 95, 0.9);
  border-radius: 24px;
  padding: 40px;
  box-shadow:
    0 24px 64px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(0, 201, 167, 0.05) inset;
  animation: slideUp 500ms cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ── Header ────────────────────────────────────────────────── */
.auth-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #00c9a7, #0082ff);
  color: #031019;
  font-weight: 800;
  font-size: 20px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0, 201, 167, 0.35);
}

.auth-header h1 {
  margin: 0;
  color: #f0f4f8;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.auth-header p {
  margin: 3px 0 0;
  color: #64748b;
  font-size: 13px;
}

/* ── Mode switch (tabs) ─────────────────────────────────────── */
.auth-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: #132744;
  border-radius: 999px;
  border: 1px solid rgba(30, 58, 95, 0.8);
}

.tab {
  flex: 1;
  border: none;
  border-radius: 999px;
  padding: 10px 14px;
  background: transparent;
  color: #475569;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: all 250ms cubic-bezier(0.22, 1, 0.36, 1);
}

.tab:hover:not(.active) {
  color: #94a3b8;
  background: rgba(255, 255, 255, 0.04);
}

.tab.active {
  background: linear-gradient(135deg, #14d8c4, #1aa6e8);
  color: #fff;
  box-shadow: 0 8px 20px rgba(20, 216, 196, 0.35);
}

/* ── Form ──────────────────────────────────────────────────── */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Field group ───────────────────────────────────────────── */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── Input wrapper ─────────────────────────────────────────── */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 56px;
  border-radius: 12px;
  border: 1.5px solid rgba(30, 58, 95, 0.9);
  background: #132840;
  transition:
    border-color 200ms ease,
    box-shadow   200ms ease,
    transform    200ms ease;
}

.input-wrapper--focused {
  border-color: #00c9a7;
  box-shadow: 0 0 0 3px rgba(0, 201, 167, 0.15);
  transform: translateY(-1px);
}

.input-wrapper--error {
  border-color: #f25c54;
  box-shadow: 0 0 0 3px rgba(242, 92, 84, 0.12);
}

.input-wrapper--error.input-wrapper--focused {
  border-color: #f25c54;
  box-shadow: 0 0 0 3px rgba(242, 92, 84, 0.18);
}

/* ── Left icon ─────────────────────────────────────────────── */
.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  font-size: 18px;
  color: #6b7280;
  flex-shrink: 0;
  pointer-events: none;
  transition: color 200ms ease;
  z-index: 2;
}

.input-icon--active {
  color: #00c9a7;
}

/* ── Floating label ────────────────────────────────────────── */
/*
   Resting state  — sits vertically centred, looks like a placeholder.
   Active state   — floats to the TOP of the wrapper (above typed text).
   This matches the Stripe / Vercel / Linear pattern.
*/
.floating-label {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 15px;
  font-weight: 500;
  color: #475569;
  pointer-events: none;
  transition:
    top        200ms cubic-bezier(0.22, 1, 0.36, 1),
    transform  200ms cubic-bezier(0.22, 1, 0.36, 1),
    font-size  200ms cubic-bezier(0.22, 1, 0.36, 1),
    color      200ms ease;
  white-space: nowrap;
  z-index: 1;
}

/* Shift right when icon is present */
.floating-label--with-icon {
  left: 40px;
}

/* Floated-up state (focused or has value) */
.floating-label--active {
  top: 8px;
  transform: translateY(0);
  font-size: 11px;
  font-weight: 700;
  color: #00c9a7;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Filled but not focused — stay floated, turn muted (Stripe/Vercel pattern) */
.floating-label--filled {
  color: #64748b;
}

/* ── Input itself ──────────────────────────────────────────── */
.auth-input {
  width: 100%;
  height: 56px;
  padding: 22px 16px 8px 16px;
  background: transparent;
  color: #f0f4f8;
  font-size: 15px;
  line-height: 22px;
  outline: none;
  border: none;
  border-radius: 12px;
  caret-color: #00c9a7;
  min-width: 0;
  box-sizing: border-box;
}

/* Shift text right when icon present — icon is 14px left + 18px wide + 8px gap */
.auth-input--with-icon {
  padding-left: 40px;
}

/* Right padding for password eye toggle */
.auth-input--with-toggle {
  padding-right: 60px;
}

/* Hide the browser's built-in password reveal button so it doesn't
   double up with our custom toggle — Edge, IE, and Chromium-based. */
.auth-input::-ms-reveal,
.auth-input::-ms-clear {
  display: none;
}

input[type="password"]::-ms-reveal,
input[type="password"]::-ms-clear {
  display: none;
}

.auth-input::-webkit-credentials-auto-fill-button,
.auth-input::-webkit-contacts-auto-fill-button {
  display: none !important;
}

.auth-input::placeholder {
  color: #334155;
  font-size: 14px;
}

/* Autofill override — handled by keyframes above */

/* ── Password show/hide toggle ─────────────────────────────── */
.password-toggle {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: #475569;
  cursor: pointer;
  border-radius: 6px;
  transition: color 180ms ease, background 180ms ease;
  z-index: 5;
}

.password-toggle:hover {
  color: #00c9a7;
  background: rgba(0, 201, 167, 0.1);
}

.password-toggle:focus-visible {
  outline: 2px solid #00c9a7;
  outline-offset: 2px;
}

/* ── Field hint & error ────────────────────────────────────── */
.field-hint {
  margin-top: 8px;
  margin-left: 4px;
  font-size: 12px;
  color: #64748b;
  line-height: 1.4;
}

.field-error {
  margin-top: 6px;
  margin-left: 4px;
  font-size: 12px;
  color: #f25c54;
  animation: shakeIn 250ms ease;
  line-height: 1.4;
}

/* ── Auth options row (Remember me + Forgot) ───────────────── */
.auth-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4px;
  margin-bottom: 4px;
  gap: 8px;
  flex-wrap: wrap;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #64748b;
  cursor: pointer;
  user-select: none;
}

.checkbox-row input[type="checkbox"] {
  accent-color: #00c9a7;
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.checkbox-row-large {
  margin-top: 2px;
}

/* ── Forgot / terms link ───────────────────────────────────── */
.link-button {
  border: none;
  background: transparent;
  color: #00c9a7;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  font-size: 13px;
  transition: opacity 180ms ease;
}

.link-button:hover {
  opacity: 0.75;
}

/* ── Submit button ─────────────────────────────────────────── */
.auth-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 54px;
  margin-top: 12px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #00c9a7 0%, #00a8d8 100%);
  color: #031019;
  font-weight: 800;
  font-size: 17px;
  cursor: pointer;
  letter-spacing: 0.2px;
  transition:
    transform    200ms cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow   200ms ease,
    opacity      200ms ease;
  overflow: hidden;
}

.auth-button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #00ddb8, #00bce8);
  opacity: 0;
  transition: opacity 200ms ease;
}

.auth-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 201, 167, 0.3);
}

.auth-button:hover:not(:disabled)::before {
  opacity: 1;
}

.auth-button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(0, 201, 167, 0.2);
}

.auth-button > * {
  position: relative;
}

.auth-button.is-loading {
  opacity: 0.88;
  cursor: progress;
}

.auth-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ── Spinner ───────────────────────────────────────────────── */
.check-mark {
  font-size: 16px;
  font-weight: 900;
}

.spinner {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 2px solid rgba(3, 16, 25, 0.3);
  border-top-color: #031019;
  animation: spin 700ms linear infinite;
}

/* ── Password strength ─────────────────────────────────────── */
.password-strength {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
  margin-bottom: 16px;
}

.password-strength-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: #94a3b8;
}

.strength-badge {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color 220ms ease;
}

.strength-badge.weak   { color: #f25c54; }
.strength-badge.medium { color: #f6c90e; }
.strength-badge.strong { color: #00c9a7; }

.strength-bar {
  width: 100%;
  height: 5px;
  background: rgba(148, 163, 184, 0.15);
  border-radius: 999px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  border-radius: inherit;
  transition: width 260ms cubic-bezier(0.22, 1, 0.36, 1);
}

.strength-fill.weak   { background: #f25c54; }
.strength-fill.medium { background: #f6c90e; }
.strength-fill.strong { background: #00c9a7; }

/* ── Auth message banner (fallback) ────────────────────────── */
.auth-message {
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
}

.auth-message.error {
  color: #f0f4f8;
  background: rgba(242, 92, 84, 0.14);
  border-color: rgba(242, 92, 84, 0.3);
}

.auth-message.info {
  color: #f0f4f8;
  background: rgba(0, 201, 167, 0.12);
  border-color: rgba(0, 201, 167, 0.3);
}

/* ── Forgot Password screen ────────────────────────────────── */
.forgot-screen {
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 300ms ease-out;
}

.forgot-back {
  align-self: flex-start;
  background: none;
  border: none;
  color: #64748b;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  transition: color 180ms ease;
}

.forgot-back:hover {
  color: #00c9a7;
}

.forgot-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.forgot-icon {
  font-size: 32px;
  line-height: 1;
  margin-bottom: 4px;
}

.forgot-title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: #f0f4f8;
}

.forgot-sub {
  margin: 0;
  font-size: 13px;
  color: #64748b;
  line-height: 1.55;
  max-width: 300px;
}

.forgot-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  padding: 8px 0;
}

.forgot-success-icon {
  font-size: 36px;
}

.forgot-success p {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.6;
}

.forgot-success strong {
  color: #f0f4f8;
}

/* ── Keyframes ─────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0);    }
}

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

@keyframes shakeIn {
  0%   { transform: translateX(0);    }
  25%  { transform: translateX(-4px); }
  50%  { transform: translateX(4px);  }
  75%  { transform: translateX(-2px); }
  100% { transform: translateX(0);    }
}

/*
  Autofill detection keyframes.
  Chrome fires a CSS animation on :-webkit-autofill — we name them so
  React's onAnimationStart can detect the event and float the label
  before the controlled value state catches up.
*/
@keyframes autofillStart {
  from { /* intentionally empty */ }
  to   { /* intentionally empty */ }
}

@keyframes autofillEnd {
  from { /* intentionally empty */ }
  to   { /* intentionally empty */ }
}

.auth-input:-webkit-autofill {
  animation-name: autofillStart;
  animation-duration: 1ms;
  /* Keep dark background — overrides Chrome's yellow autofill tint */
  -webkit-box-shadow: 0 0 0 1000px #132840 inset;
  -webkit-text-fill-color: #f0f4f8;
  caret-color: #00c9a7;
}

.auth-input:not(:-webkit-autofill) {
  animation-name: autofillEnd;
  animation-duration: 1ms;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 560px) {
  .auth-card {
    padding: 28px 20px;
    gap: 22px;
  }

  .auth-button {
    height: 50px;
    font-size: 15px;
  }

  .auth-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}