/* ===================================================
   KIKI Academy — Login Page Styles
   =================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand */
  --brand-primary:    #6C63FF;
  --brand-primary-h:  #5A52E0;
  --brand-light:      #EAE9FF;
  --brand-glow:       rgba(108, 99, 255, 0.25);

  /* Light theme */
  --bg:               #F4F6FB;
  --surface:          #FFFFFF;
  --surface-2:        #F0F1F8;
  --border:           rgba(108, 99, 255, 0.14);
  --text-primary:     #1A1A2E;
  --text-secondary:   #5E6278;
  --text-muted:       #9EA3B8;
  --input-bg:         #F7F8FC;
  --input-border:     #E0E3F0;
  --input-focus:      #6C63FF;
  --shadow-card:      0 24px 60px rgba(108, 99, 255, 0.10),
                      0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-btn:       0 8px 24px rgba(108, 99, 255, 0.35);

  /* Blobs */
  --blob-1: rgba(108, 99, 255, 0.12);
  --blob-2: rgba(130, 200, 255, 0.10);
  --blob-3: rgba(255, 140, 200, 0.08);

  /* Misc */
  --radius-card:  20px;
  --radius-input: 12px;
  --radius-btn:   12px;
  --transition:   0.22s ease;
  --font:         'Inter', system-ui, sans-serif;
}

[data-theme="dark"] {
  --bg:               #0F0F1A;
  --surface:          #1A1A2E;
  --surface-2:        #22223A;
  --border:           rgba(108, 99, 255, 0.22);
  --text-primary:     #EAEAF5;
  --text-secondary:   #9EA3C0;
  --text-muted:       #5E6278;
  --input-bg:         #22223A;
  --input-border:     #2E2E4A;
  --input-focus:      #8A84FF;
  --shadow-card:      0 24px 60px rgba(0, 0, 0, 0.45),
                      0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-btn:       0 8px 24px rgba(108, 99, 255, 0.45);
  --blob-1: rgba(108, 99, 255, 0.08);
  --blob-2: rgba(80, 160, 255, 0.06);
  --blob-3: rgba(200, 80, 160, 0.05);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
  position: relative;
}

/* ---------- Animated Background Blobs ---------- */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: floatBlob 14s ease-in-out infinite alternate;
}

.bg-blob--1 {
  width: 480px;
  height: 480px;
  background: var(--blob-1);
  top: -120px;
  left: -120px;
  animation-duration: 16s;
}

.bg-blob--2 {
  width: 360px;
  height: 360px;
  background: var(--blob-2);
  bottom: -100px;
  right: -80px;
  animation-duration: 12s;
  animation-delay: -4s;
}

.bg-blob--3 {
  width: 260px;
  height: 260px;
  background: var(--blob-3);
  top: 50%;
  left: 60%;
  animation-duration: 18s;
  animation-delay: -8s;
}

@keyframes floatBlob {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(30px, -20px) scale(1.05); }
  100% { transform: translate(-20px, 30px) scale(0.96); }
}

/* ---------- Theme Toggle ---------- */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform 0.18s ease;
}

.theme-toggle:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  box-shadow: 0 4px 20px var(--brand-glow);
  transform: scale(1.08) rotate(12deg);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* Show/hide sun vs moon icons */
.theme-icon { display: flex; align-items: center; }
.theme-icon--light { display: flex; }
.theme-icon--dark  { display: none; }

[data-theme="dark"] .theme-icon--light { display: none; }
[data-theme="dark"] .theme-icon--dark  { display: flex; }

/* ---------- Layout ---------- */
.login-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

/* ---------- Card ---------- */
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 440px;
  padding: 48px 40px 40px;
  transition: background var(--transition), border-color var(--transition),
              box-shadow var(--transition);
  animation: cardIn 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(28px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- Brand ---------- */
.brand {
  text-align: center;
  margin-bottom: 36px;
}

.brand__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--brand-primary), #9B8FFF);
  color: #fff;
  margin-bottom: 18px;
  box-shadow: 0 8px 28px var(--brand-glow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.brand__logo:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 14px 36px var(--brand-glow);
}

.brand__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--brand-primary), #9B8FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  line-height: 1.2;
}

.brand__subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 300px;
  margin: 0 auto;
}

/* ---------- Form ---------- */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- Field ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field__label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
  transition: color var(--transition);
}

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

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

.field__input {
  width: 100%;
  height: 50px;
  padding: 0 44px 0 44px;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-input);
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition), background var(--transition),
              box-shadow var(--transition), color var(--transition);
}

.field__input::placeholder {
  color: var(--text-muted);
}

.field__input:focus {
  border-color: var(--input-focus);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--brand-glow);
}

.field__input:focus + .field__icon,
.field__input-wrap:focus-within .field__icon {
  color: var(--brand-primary);
}

/* Eye toggle for password */
.field__eye {
  position: absolute;
  right: 14px;
  display: flex;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  border-radius: 6px;
  transition: color var(--transition);
}

.field__eye:hover { color: var(--brand-primary); }

/* Error state */
.field.has-error .field__input {
  border-color: #E55757;
  box-shadow: 0 0 0 3px rgba(229, 87, 87, 0.15);
}

.field.has-error .field__label { color: #E55757; }

.field__error {
  font-size: 0.78rem;
  color: #E55757;
  min-height: 16px;
  display: block;
  animation: errIn 0.2s ease;
}

@keyframes errIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Submit Button ---------- */
.btn-login {
  margin-top: 4px;
  position: relative;
  width: 100%;
  height: 52px;
  border: none;
  border-radius: var(--radius-btn);
  background: linear-gradient(135deg, var(--brand-primary), #9B8FFF);
  color: #fff;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  overflow: hidden;
  box-shadow: var(--shadow-btn);
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.btn-login::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #9B8FFF, var(--brand-primary));
  opacity: 0;
  transition: opacity 0.22s ease;
}

.btn-login:hover::before { opacity: 1; }

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(108, 99, 255, 0.48);
}

.btn-login:active {
  transform: translateY(0);
  box-shadow: var(--shadow-btn);
}

.btn-login:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-login__text,
.btn-login__spinner { position: relative; z-index: 1; }

/* Spinner */
.btn-login__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn-login.loading .btn-login__spinner { display: block; }
.btn-login.loading .btn-login__text    { opacity: 0.85; }

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

/* ---------- Hint ---------- */
.hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

.hint svg { flex-shrink: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
  .login-card {
    padding: 36px 24px 32px;
    border-radius: 16px;
  }

  .brand__title { font-size: 1.5rem; }
  .brand__logo  { width: 58px; height: 58px; border-radius: 14px; }

  .field__input { height: 48px; font-size: 0.875rem; }
  .btn-login    { height: 50px; font-size: 0.9375rem; }
}

@media (max-width: 360px) {
  .login-card { padding: 28px 18px 26px; }
  .brand__subtitle { font-size: 0.8125rem; }
}

/* ---------- Focus-Visible (a11y) ---------- */
:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 3px;
}

/* ---------- Scrollbar (subtle) ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--input-border);
  border-radius: 99px;
}