/* ============================================================
   EduVault — Parent Login Page Styles (clean, focused)
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --clr-bg:             #E6FFFB;
  --clr-surface:        #F8FAFC;
  --clr-surface-alt:    #FFFFFF;
  --clr-border:         rgba(30, 41, 59, 0.1);
  --clr-border-focus:   rgba(45, 212, 191, 0.6);

  --clr-primary:        #2DD4BF;
  --clr-primary-light:  #5EEAD4;
  --clr-secondary:      #F8FAFC;
  --clr-accent:         #1E293B;

  --clr-text-primary:   #1E293B;
  --clr-text-secondary: #475569;
  --clr-text-muted:     #94A3B8;

  --clr-error:          #F43F5E;
  --clr-error-bg:       rgba(244, 63, 94, 0.1);
  --clr-success:        #10B981;
  --clr-success-bg:     rgba(16, 185, 129, 0.1);

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-card:  0 10px 30px rgba(30, 41, 59, 0.05), 0 2px 8px rgba(30, 41, 59, 0.02);
  --shadow-btn:   0 8px 16px rgba(45, 212, 191, 0.25);
  --shadow-input: 0 0 0 3px rgba(45, 212, 191, 0.15);

  --transition-fast:   160ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 260ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 380ms cubic-bezier(0.34, 1.56, 0.64, 1);

  --font-body:    'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', system-ui, sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

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

/* ── Animated background orbs ─────────────────────────────── */
.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.15;
  animation: orbFloat 14s ease-in-out infinite alternate;
}

.orb-1 {
  width: 550px; height: 550px;
  background: radial-gradient(circle, #2DD4BF, #E6FFFB);
  top: -180px; left: -180px;
  animation-delay: 0s;
}

.orb-2 {
  width: 480px; height: 480px;
  background: radial-gradient(circle, #5EEAD4, #F8FAFC);
  bottom: -140px; right: -140px;
  animation-delay: -5s;
  animation-duration: 17s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #14B8A6, #E6FFFB);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -9s;
  animation-duration: 20s;
  opacity: 0.07;
}

@keyframes orbFloat {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(28px, -36px) scale(1.07); }
  100% { transform: translate(-18px, 28px) scale(0.96); }
}

/* ── Login page centred wrapper ───────────────────────────── */
.login-page {
  position: relative;
  z-index: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
  min-height: 100vh;
}

/* ── Card ─────────────────────────────────────────────────── */
.login-card {
  width: 100%;
  max-width: 420px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 2.75rem 2.5rem 2.5rem;
  box-shadow: var(--shadow-card);
  position: relative;
  animation: cardEntrance 0.55s cubic-bezier(0.34, 1.2, 0.64, 1) both;
}

@keyframes cardEntrance {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Top gradient accent line */
.card-accent {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 140, 148, 0.7), rgba(168, 230, 207, 0.7), transparent);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* ── Card Header ──────────────────────────────────────────── */
.card-header {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeUp 0.5s ease 0.1s both;
}

.card-logo {
  display: inline-block;
  margin-bottom: 1.1rem;
  filter: drop-shadow(0 6px 20px rgba(255, 140, 148, 0.45));
  animation: logoIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.05s both;
}

@keyframes logoIn {
  from { opacity: 0; transform: scale(0.6) rotate(-8deg); }
  to   { opacity: 1; transform: scale(1) rotate(0deg); }
}

.card-logo svg { display: block; }

.card-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--clr-text-primary);
  margin-bottom: 0.35rem;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
  line-height: 1.5;
}

/* ── Tabs ─────────────────────────────────────────────────── */
.login-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  background: rgba(0, 0, 0, 0.03);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
}

.login-tab {
  flex: 1;
  padding: 0.5rem 0;
  border: none;
  background: transparent;
  color: var(--clr-text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.login-tab.active {
  background: var(--clr-surface);
  color: var(--clr-primary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.login-tab:hover:not(.active) {
  color: var(--clr-text-primary);
}

/* ── Form ─────────────────────────────────────────────────── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

/* Field group */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  animation: fadeUp 0.45s ease both;
}

.field-group:nth-child(1) { animation-delay: 0.18s; }
.field-group:nth-child(2) { animation-delay: 0.24s; }
.field-group:nth-child(3) { animation-delay: 0.30s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Label */
.field-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

.field-group:focus-within .field-label { color: var(--clr-primary-light); }
.field-label svg { opacity: 0.65; flex-shrink: 0; }

/* Input wrapper */
.input-wrapper { position: relative; }

.field-input {
  width: 100%;
  height: 50px;
  padding: 0 1rem;
  background: rgba(0, 0, 0, 0.02);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 400;
  outline: none;
  transition:
    border-color var(--transition-fast),
    background   var(--transition-fast),
    box-shadow   var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.field-input::placeholder { color: var(--clr-text-muted); }

.field-input:hover {
  border-color: rgba(0, 0, 0, 0.14);
  background: rgba(0, 0, 0, 0.04);
}

.field-input:focus {
  border-color: var(--clr-primary);
  background: rgba(255, 140, 148, 0.06);
  box-shadow: var(--shadow-input);
}

/* Date input calendar icon */
.date-input::-webkit-calendar-picker-indicator {
  filter: invert(0.6) sepia(1) hue-rotate(210deg) saturate(2);
  cursor: pointer;
  opacity: 0.65;
  transition: opacity var(--transition-fast);
}
.date-input::-webkit-calendar-picker-indicator:hover { opacity: 1; }

/* Password field */
.password-wrapper .field-input { padding-right: 3rem; }

.toggle-password {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.toggle-password:hover {
  color: var(--clr-primary-light);
  background: rgba(255, 140, 148, 0.1);
}

.toggle-password:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 2px;
}

.eye-icon         { display: block; }
.eye-icon.hidden  { display: none; }

/* Error state */
.field-group.has-error .field-input {
  border-color: var(--clr-error);
  background: var(--clr-error-bg);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12);
}

.field-error {
  font-size: 0.78rem;
  color: var(--clr-error);
  font-weight: 500;
  min-height: 1rem;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.field-group.has-error .field-error {
  opacity: 1;
  transform: translateY(0);
}

/* ── Login Button ─────────────────────────────────────────── */
.login-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  width: 100%;
  height: 52px;
  margin-top: 0.25rem;
  background: var(--clr-primary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--clr-text-primary);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  overflow: hidden;
  box-shadow: var(--shadow-btn);
  transition:
    transform      var(--transition-fast),
    box-shadow     var(--transition-fast),
    opacity        var(--transition-fast);
  animation: fadeUp 0.45s ease 0.36s both;
}

.login-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.14), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.login-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  background: #14B8A6; /* Darker Mint */
  box-shadow: 0 10px 24px rgba(45, 212, 191, 0.4);
}

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

.login-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-btn);
}

.login-btn:focus-visible {
  outline: 3px solid var(--clr-primary-light);
  outline-offset: 3px;
}

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

/* Loading state */
.login-btn.loading .btn-text  { opacity: 0; }
.login-btn.loading .btn-arrow { opacity: 0; }
.login-btn.loading .btn-spinner { display: block; }

.btn-arrow { transition: transform var(--transition-normal); }
.login-btn:hover:not(:disabled) .btn-arrow { transform: translateX(4px); }

.btn-spinner {
  display: none;
  width: 20px; height: 20px;
  border: 2.5px solid rgba(30, 41, 59, 0.2);
  border-top-color: #1E293B;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  position: absolute;
}

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

/* ── Toast notification ───────────────────────────────────── */
.toast {
  position: absolute;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity   var(--transition-normal),
    transform var(--transition-spring);
  z-index: 10;
}

.toast-success {
  background: var(--clr-success-bg);
  border: 1.5px solid rgba(52, 211, 153, 0.35);
  color: var(--clr-success);
  backdrop-filter: blur(12px);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ============================================================
   RESPONSIVE — Login Page
   Breakpoints: 1024 tablet-lg | 768 tablet | 480 mobile-lg | 360 mobile-sm
   ============================================================ */

/* ── Tablet landscape & below (≤1024px) ──────────────────── */
@media (max-width: 1024px) {
  .login-card {
    max-width: 400px;
  }
}

/* ── Tablet portrait (≤768px) ────────────────────────────── */
@media (max-width: 768px) {
  html { font-size: 15px; }

  .login-page { padding: 1.5rem 1rem; }

  .login-card {
    max-width: 100%;
    padding: 2.25rem 1.75rem 2rem;
    border-radius: var(--radius-lg);
    /* Soften box-shadow on mid screens */
    box-shadow: 0 16px 48px rgba(0,0,0,0.45);
  }

  .card-title    { font-size: 1.6rem; }
  .card-subtitle { font-size: 0.875rem; }

  /* Slightly larger touch-friendly inputs */
  .field-input { height: 52px; font-size: 1rem; }
  .login-btn   { height: 54px; font-size: 1rem; }
}

/* ── Large mobile (≤480px) ───────────────────────────────── */
@media (max-width: 480px) {
  html { font-size: 15px; }

  .login-page { padding: 1rem 0.875rem; align-items: flex-start; padding-top: 2rem; }

  .login-card {
    padding: 2rem 1.25rem 1.75rem;
    border-radius: var(--radius-lg);
    /* On very small phones, let the card sit flush at edges */
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  }

  .card-header  { margin-bottom: 1.5rem; }
  .card-title   { font-size: 1.45rem; }
  .card-subtitle{ font-size: 0.82rem; }
  .card-logo svg{ width: 38px; height: 38px; }

  .field-label  { font-size: 0.75rem; }
  .field-input  { height: 50px; font-size: 0.95rem; }
  .login-btn    { height: 52px; }
  .login-form   { gap: 1rem; }

  /* Prevent orbs from causing horizontal scroll */
  .orb-1 { width: 300px; height: 300px; top: -100px; left: -100px; }
  .orb-2 { width: 260px; height: 260px; bottom: -80px; right: -80px; }
  .orb-3 { display: none; }
}

/* ── Small mobile (≤360px) ───────────────────────────────── */
@media (max-width: 360px) {
  .login-page { padding: 0.75rem; padding-top: 1.5rem; }

  .login-card {
    padding: 1.75rem 1rem 1.5rem;
    border-radius: var(--radius-md);
  }

  .card-title   { font-size: 1.3rem; }
  .card-header  { margin-bottom: 1.25rem; }
  .card-logo svg{ width: 34px; height: 34px; }
  .card-logo    { margin-bottom: 0.75rem; }
}

/* ── Touch-device specific ───────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  /* Remove hover-lift on touch — avoids stuck states */
  .login-btn:hover:not(:disabled) {
    transform: none;
    box-shadow: var(--shadow-btn);
  }
  /* Slightly larger tap targets for toggle */
  .toggle-password {
    width: 40px;
    height: 40px;
    right: 0.5rem;
  }
}

/* ── Landscape mobile ────────────────────────────────────── */
@media (max-height: 500px) and (orientation: landscape) {
  .login-page  { align-items: flex-start; padding-top: 1rem; padding-bottom: 1rem; }
  .card-header { margin-bottom: 1rem; }
  .card-logo   { margin-bottom: 0.6rem; }
  .card-logo svg { width: 32px; height: 32px; }
  .card-title  { font-size: 1.25rem; }
  .card-subtitle { display: none; }
  .login-form  { gap: 0.85rem; }
  .field-input, .login-btn { height: 44px; }
}

/* ── Accessibility: reduce motion ────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .orb { animation: none !important; }
}