/* ═══════════════════════════════════════════════
   ALLIEDA AUTH — Synced to main app design system
   (matches ncert-study-app.html :root tokens)
   ═══════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ─── Design Tokens (1:1 mirror of main app) ─── */
:root {
  /* Blue Psychology Ramp — research-backed palette */
  --blue-50:  #E6F1FB;
  --blue-100: #CDDFF5;
  --blue-200: #B5D4F4;
  --blue-300: #8BB8E8;
  --blue-400: #6FA8E0;
  --blue-500: #4A90D9;
  --blue-600: #378ADD;
  --blue-700: #2B6CB0;
  --blue-800: #185FA5;
  --blue-900: #0C447C;

  --bg-0:     #111214;
  --bg-1:     #1a1c20;
  --bg-2:     #22252c;
  --bg-3:     #2c303a;
  --glass:    var(--bg-2);
  --glass-h:  var(--bg-3);
  --border:   rgba(255,255,255,0.08);
  --border2:  rgba(255,255,255,0.15);
  --text:     #e2e8f0;
  --text-2:   #8892aa;
  --muted:    #606880;
  --dim:      #40485e;

  --blue:     var(--blue-600);
  --blue-dim: rgba(74,144,217,0.15);
  --blue-glow:rgba(74,144,217,0.40);
  --purple:   var(--blue-500);
  --gold:     #f59e0b;
  --correct:  #10b981;
  --wrong:    #ef4444;
  --wrong-dim:rgba(239,68,68,0.12);

  --r:        10px;
  --r2:       8px;
  --r3:       6px;
  --r-sm:     8px;
  --r-md:     10px;
  --r-pill:   999px;

  --fast:     60ms;
  --mid:      100ms;
  --slow:     160ms;
  --ease:     cubic-bezier(.4,0,.2,1);
  --spring:   cubic-bezier(.4,0,.2,1);
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--bg-0); height: 100%; }
body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--text);
  background: var(--bg-0);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-weight: 400;
  line-height: 1.6;
}
h1, h2, h3, h4 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}

/* ─── Animated Grid Background ─── */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.bg-grid::before {
  content: '';
  position: absolute;
  inset: -100%;
  background-image:
    repeating-linear-gradient(
      -45deg,
      transparent 0px, transparent 48px,
      rgba(79,142,247,.022) 48px, rgba(79,142,247,.022) 49px
    ),
    repeating-linear-gradient(
      45deg,
      transparent 0px, transparent 48px,
      rgba(168,85,247,.015) 48px, rgba(168,85,247,.015) 49px
    );
  animation: gridDrift 28s linear infinite;
}
@keyframes gridDrift {
  from { transform: translate(0,0); }
  to   { transform: translate(49px,49px); }
}

/* ─── Floating Particles ─── */
.particle {
  position: fixed;
  border-radius: 50%;
  background: var(--blue);
  pointer-events: none;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { opacity: 0; }
  10%  { opacity: .07; }
  90%  { opacity: .04; }
  100% { transform: translateY(-110vh) scale(.3); opacity: 0; }
}

/* ─── Page Wrapper ─── */
.auth-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  padding: 16px;
  animation: pageIn var(--slow) var(--ease) both;
}
@keyframes pageIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── ALLIEDA Logo ─── */
.oxgen-logo {
  text-align: center;
  margin-bottom: 24px;
}
.oxgen-logo .logo-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 2.4rem;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.02em;
  line-height: 1;
}
.oxgen-logo .logo-sub {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
  margin-top: 4px;
  display: block;
}
.oxgen-logo a { text-decoration: none; }

/* ─── Card (matches .card in app) ─── */
.auth-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 28px 28px 24px;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
  transition: border-color var(--mid) var(--ease);
}
.auth-card:hover { border-color: var(--border2); }

.auth-card h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--text);
  margin-bottom: 4px;
}
.auth-card .subtitle {
  font-size: .83rem;
  color: var(--text-2);
  margin-bottom: 22px;
  line-height: 1.5;
}

/* ─── Form Fields ─── */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: .7rem;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 6px;
}

.input-wrap { position: relative; }
.input-wrap input,
.input-wrap select {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r3);
  color: var(--text);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: .9rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.input-wrap input::placeholder { color: var(--muted); }
.input-wrap input:focus,
.input-wrap select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px var(--blue-dim);
}
.input-wrap input.is-error  { border-color: var(--wrong); box-shadow: 0 0 0 3px var(--wrong-dim); }
.input-wrap input.is-valid  { border-color: var(--correct); }
.input-wrap select.is-error { border-color: var(--wrong); }
.input-wrap select.is-valid { border-color: var(--correct); }

/* Password eye toggle */
.pw-wrap { position: relative; }
.pw-wrap input { padding-right: 44px; }
.pw-toggle {
  position: absolute;
  right: 11px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px;
  line-height: 1;
  transition: color var(--fast);
}
.pw-toggle:hover { color: var(--blue); }

/* Select arrow */
.select-wrap { position: relative; }
.select-wrap::after {
  content: '▾';
  position: absolute;
  right: 13px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-2);
  font-size: .82rem;
  pointer-events: none;
}
.select-wrap select { padding-right: 32px; cursor: pointer; }
.select-wrap select option { background: var(--bg-2); color: var(--text); }

/* ─── Field Error / Valid ─── */
.field-msg {
  font-size: .73rem;
  margin-top: 4px;
  display: none;
  animation: msgIn var(--fast) var(--ease);
}
.field-msg.err { display: block; color: var(--wrong); }
.field-msg.ok  { display: block; color: var(--correct); }
@keyframes msgIn {
  from { opacity: 0; transform: translateY(-3px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Password Strength Bar ─── */
.pw-strength { margin-top: 7px; }
.pw-strength-bar {
  height: 3px;
  background: var(--bg-3);
  border-radius: var(--r-pill);
  overflow: hidden;
}
.pw-strength-fill {
  height: 100%;
  border-radius: var(--r-pill);
  width: 0%;
  transition: width var(--mid) var(--ease), background-color var(--mid) var(--ease);
}
.pw-strength-label {
  font-size: .7rem;
  color: var(--text-2);
  margin-top: 3px;
}

/* ─── Alert Banner ─── */
.alert {
  padding: 9px 13px;
  border-radius: var(--r3);
  font-size: .82rem;
  margin-bottom: 14px;
  display: none;
  line-height: 1.5;
  animation: msgIn var(--fast) var(--ease);
}
.alert.show    { display: block; }
.alert-error   { background: var(--wrong-dim); color: var(--wrong);   border: 1px solid rgba(244,63,94,.22); }
.alert-success { background: rgba(16,185,129,.12); color: var(--correct); border: 1px solid rgba(16,185,129,.22); }
.alert-info    { background: rgba(251,191,36,.1);  color: var(--gold);    border: 1px solid rgba(251,191,36,.22); }

/* ─── Primary Button (matches .btn.btn-p) ─── */
.btn-primary {
  width: 100%;
  padding: 11px;
  background: linear-gradient(135deg, var(--blue), #6C63FF);
  color: #fff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: .9rem;
  border: none;
  border-radius: var(--r3);
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(79,142,247,.3);
  transition: box-shadow var(--fast) var(--ease), transform var(--fast), opacity var(--fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  margin-top: 4px;
  letter-spacing: .01em;
}
.btn-primary:hover:not(:disabled)  { box-shadow: 0 4px 20px rgba(79,142,247,.5); transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: scale(.98); }
.btn-primary:disabled               { opacity: .4; cursor: not-allowed; }

/* Spinner */
.btn-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  flex-shrink: 0;
}
.btn-primary.loading .btn-text    { display: none; }
.btn-primary.loading .btn-spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Text Links ─── */
.auth-links {
  text-align: center;
  margin-top: 16px;
  font-size: .82rem;
  color: var(--text-2);
  line-height: 1.8;
}
.auth-links a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}
.auth-links a:hover { text-decoration: underline; }
.auth-links .dot { margin: 0 6px; opacity: .35; }

/* ─── Checkbox ─── */
.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--text-2);
  margin: 4px 0 10px;
  cursor: pointer;
  user-select: none;
}
.check-row input[type="checkbox"] {
  accent-color: var(--blue);
  width: 15px; height: 15px;
  cursor: pointer; flex-shrink: 0;
}

/* ─── Shake ─── */
@keyframes shake {
  0%,100% { transform: translateX(0); }
  16%     { transform: translateX(-8px); }
  33%     { transform: translateX(7px); }
  50%     { transform: translateX(-5px); }
  67%     { transform: translateX(4px); }
  83%     { transform: translateX(-2px); }
}
.shake { animation: shake var(--slow) var(--ease); }

/* ─── Success fade-out ─── */
@keyframes successOut {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(1.03); }
}
.success-out { animation: successOut .3s var(--ease) forwards; pointer-events: none; }

/* ─── CSS Confetti ─── */
.confetti-container {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9999; overflow: hidden;
}
.confetti-piece {
  position: absolute; top: -12px;
  animation: confFall linear forwards;
}
@keyframes confFall {
  0%   { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  85%  { opacity: 1; }
  100% { transform: translateY(108vh) rotate(800deg); opacity: 0; }
}

/* ─── Step Dots ─── */
.step-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 22px;
}
.step-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--bg-3);
  transition: background var(--mid), transform var(--mid);
}
.step-dot.active { background: var(--blue); transform: scale(1.4); }
.step-dot.done   { background: var(--correct); opacity: .5; }

/* ─── Divider ─── */
.divider {
  display: flex; align-items: center;
  gap: 10px; margin: 18px 0;
  color: var(--muted); font-size: .7rem;
  text-transform: uppercase; letter-spacing: .07em;
}
.divider::before, .divider::after {
  content: ''; flex: 1;
  height: 1px; background: var(--border);
}

/* ─── Landing Page ─── */
.landing-wrap {
  position: relative; z-index: 1;
  text-align: center;
  max-width: 500px;
  padding: 32px 16px;
  animation: pageIn var(--slow) var(--ease) both;
}
.landing-logo { margin-bottom: 32px; }
.landing-logo .logo-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: clamp(3rem, 10vw, 4.2rem);
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.02em;
  line-height: 1;
}
.landing-logo .logo-sub {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  margin-top: 5px;
  display: block;
}
.tagline {
  font-size: clamp(1rem, 3vw, 1.2rem);
  color: var(--text-2);
  margin-bottom: 40px;
  line-height: 1.65;
  max-width: 360px;
  margin-left: auto; margin-right: auto;
}
.tagline strong { color: var(--text); font-weight: 700; }

.landing-ctas {
  display: flex; gap: 12px;
  justify-content: center;
  margin-bottom: 44px; flex-wrap: wrap;
}
.cta-primary {
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--blue), #6C63FF);
  color: #fff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700; font-size: .9rem;
  border: none; border-radius: var(--r3);
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(79,142,247,.3);
  transition: box-shadow var(--fast), transform var(--fast);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.cta-primary:hover  { box-shadow: 0 4px 20px rgba(79,142,247,.5); transform: translateY(-1px); }
.cta-primary:active { transform: scale(.97); }

.cta-secondary {
  padding: 12px 32px;
  background: var(--glass);
  color: var(--text-2);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600; font-size: .9rem;
  border: 1px solid var(--border);
  border-radius: var(--r3);
  cursor: pointer;
  transition: background var(--fast), border-color var(--fast), color var(--fast);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 6px;
}
.cta-secondary:hover { background: var(--glass-h); border-color: var(--border2); color: var(--text); }

/* Stats bar */
.stats-bar {
  display: flex; justify-content: center;
  gap: 28px; margin-bottom: 36px; flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-val {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800; font-size: 1.35rem;
  color: var(--blue); display: block;
}
.stat-lbl {
  font-size: .65rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .07em;
}

/* Quote card */
.quote-card {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 22px;
  max-width: 380px; margin: 0 auto;
  position: relative; text-align: left;
}
.quote-mark {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 3rem; line-height: 1;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: .4;
  position: absolute; top: 4px; left: 14px;
}
.quote-text {
  font-size: .86rem; color: var(--text-2);
  font-style: italic; line-height: 1.65;
  padding-top: 10px;
}
.quote-author {
  font-size: .7rem; color: var(--gold);
  font-weight: 700; margin-top: 8px;
  text-transform: uppercase; letter-spacing: .06em;
}
.quote-date {
  font-size: .68rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: .1em;
  margin-bottom: 8px;
  text-align: left; max-width: 380px; margin-left: auto; margin-right: auto;
}

/* ─── Responsive ─── */
@media (max-width: 480px) {
  .auth-card { padding: 22px 16px; }
  .landing-ctas { flex-direction: column; align-items: center; }
  .cta-primary, .cta-secondary { width: 220px; justify-content: center; }
}