/* ============================================================
   Panda Lingo Auth · Stylesheet
   Version: 1.0.0
   Theme: White + Green (Panda Lingo)
   ============================================================ */

/* ================= RESET ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, system-ui, -apple-system, sans-serif;
}

:root {
  --green: #16a34a;
  --green-dark: #15803d;
  --green-light: #22c55e;
  --green-soft: #dcfce7;
  --green-glow: rgba(22, 163, 74, 0.25);

  --white: #ffffff;
  --bg-soft: #f8fafc;

  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;

  --radius: 8px;
  --radius-sm: 6px;
  --shadow: 0 10px 30px -12px rgba(15, 23, 42, 0.12);
  --shadow-hover: 0 20px 45px -12px rgba(22, 163, 74, 0.35);
}

html, body {
  height: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--text);
  overflow-x: hidden;
  position: relative;
  padding: 20px;
}

/* ================= ANIMATED BACKGROUND ================= */
.pla-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(1200px 600px at 10% -10%, #dcfce7 0%, transparent 60%),
    radial-gradient(1000px 500px at 110% 110%, #d1fae5 0%, transparent 55%),
    linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #ffffff 100%);
}

.pla-grid-lines {
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(to right, rgba(22, 163, 74, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(22, 163, 74, 0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: plaGridMove 30s linear infinite;
  pointer-events: none;
}
@keyframes plaGridMove {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

.pla-ring {
  position: absolute;
  width: 900px;
  height: 900px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    rgba(22, 163, 74, 0.00) 0deg,
    rgba(22, 163, 74, 0.20) 90deg,
    rgba(34, 197, 94, 0.12) 180deg,
    rgba(22, 163, 74, 0.00) 360deg
  );
  animation: plaSpin 35s linear infinite;
  filter: blur(50px);
  pointer-events: none;
}
@keyframes plaSpin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.pla-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  will-change: transform;
}
.pla-blob.b1 {
  width: 420px; height: 420px;
  background: #86efac;
  top: -120px; left: -100px;
  animation: plaFloat1 22s ease-in-out infinite alternate;
}
.pla-blob.b2 {
  width: 380px; height: 380px;
  background: #bbf7d0;
  bottom: -120px; right: -100px;
  animation: plaFloat2 26s ease-in-out infinite alternate;
}
.pla-blob.b3 {
  width: 300px; height: 300px;
  background: #4ade80;
  top: 40%; left: 55%;
  animation: plaFloat3 30s ease-in-out infinite alternate;
  opacity: 0.35;
}
.pla-blob.b4 {
  width: 260px; height: 260px;
  background: #a7f3d0;
  bottom: 10%; left: 15%;
  animation: plaFloat1 24s ease-in-out infinite alternate-reverse;
  opacity: 0.45;
}

@keyframes plaFloat1 {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(80px, 60px) scale(1.15); }
}
@keyframes plaFloat2 {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-70px, -50px) scale(1.1); }
}
@keyframes plaFloat3 {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-50px, 70px) scale(1.2); }
}

.pla-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.pla-particle {
  position: absolute;
  width: 4px;
  height: 12px;
  background: linear-gradient(to bottom, #22c55e, #16a34a);
  border-radius: 4px;
  opacity: 0.55;
  animation: plaRise linear infinite;
}
@keyframes plaRise {
  0%   { transform: translateY(20px) scale(0.6) rotate(0deg); opacity: 0; }
  15%  { opacity: 0.8; }
  100% { transform: translateY(-120vh) scale(1) rotate(360deg); opacity: 0; }
}

/* ================= AUTH CARD ================= */
.pla-auth-card {
  position: relative;
  z-index: 5;
  width: 100%;
  max-width: 440px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 26px 26px;
  animation: plaCardIn 0.6s cubic-bezier(.22, 1, .36, 1);
  transition: box-shadow .3s ease, border-color .3s ease;
}
.pla-auth-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(22, 163, 74, 0.35);
}
@keyframes plaCardIn {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ================= BRAND (CENTERED) ================= */
.pla-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 10px;
  margin-bottom: 24px;
  min-height: 60px;
}

.pla-brand-logo-img {
  height: 64px;
  width: auto;
  max-width: 90%;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 6px 14px rgba(22, 163, 74, 0.25));
  animation: plaLogoFloat 4s ease-in-out infinite;
  transition: transform .3s ease, filter .3s ease;
}
.pla-brand-logo-img:hover {
  transform: scale(1.04);
  filter: drop-shadow(0 10px 22px rgba(22, 163, 74, 0.4));
}
@keyframes plaLogoFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-4px); }
}

.pla-brand-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
}
.pla-brand-fallback .pla-brand-logo {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--green-light), var(--green-dark));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 26px;
  box-shadow: 0 6px 18px -6px rgba(22, 163, 74, 0.7);
  margin: 0 auto;
  animation: plaPulseGlow 3s ease-in-out infinite;
}
@keyframes plaPulseGlow {
  0%, 100% { box-shadow: 0 6px 18px -6px rgba(22, 163, 74, 0.7); transform: scale(1); }
  50%      { box-shadow: 0 10px 26px -6px rgba(22, 163, 74, 1); transform: scale(1.05); }
}
.pla-brand-fallback .pla-brand-text { text-align: center; }
.pla-brand-fallback .pla-brand-text h1 {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: .3px;
  color: var(--text);
}
.pla-brand-fallback .pla-brand-text h1 span { color: var(--green); }
.pla-brand-fallback .pla-brand-text p {
  font-size: .8rem;
  color: var(--muted);
  margin-top: 2px;
}

/* ================= TABS ================= */
.pla-tabs {
  position: relative;
  display: flex;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 22px;
}
.pla-tab-indicator {
  position: absolute;
  top: 4px;
  left: 4px;
  width: calc(50% - 4px);
  height: calc(100% - 8px);
  background: linear-gradient(135deg, var(--green-light), var(--green-dark));
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.35);
  transition: transform .35s cubic-bezier(.22, 1, .36, 1);
  z-index: 1;
}
.pla-tabs.signup .pla-tab-indicator { transform: translateX(100%); }

.pla-tab-btn {
  position: relative;
  z-index: 2;
  flex: 1;
  padding: 10px 0;
  background: transparent;
  border: none;
  font-size: .9rem;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  transition: color .25s ease;
}
.pla-tab-btn.active { color: #fff; }

/* ================= FORM ================= */
.pla-form {
  display: none;
  flex-direction: column;
  gap: 16px;
}
.pla-form.active {
  display: flex;
  animation: plaFadeSlide .4s ease;
}
@keyframes plaFadeSlide {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.pla-field { display: flex; flex-direction: column; gap: 6px; }
.pla-field label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.pla-field label .pla-hint {
  font-weight: 400;
  color: var(--muted);
  font-size: .72rem;
}

.pla-input-wrap {
  display: flex;
  align-items: center;
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 0 12px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.pla-input-wrap:focus-within {
  border-color: var(--green);
  box-shadow: 0 0 0 4px var(--green-glow);
}
.pla-input-wrap.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}
.pla-input-wrap.success { border-color: var(--green); }

.pla-input-wrap > i.pla-lead {
  color: var(--muted);
  font-size: .9rem;
  width: 18px;
  transition: color .2s;
}
.pla-input-wrap:focus-within > i.pla-lead { color: var(--green); }

.pla-input-wrap input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: 11px 8px;
  font-size: .92rem;
  color: var(--text);
}
.pla-input-wrap input::placeholder { color: #94a3b8; }

/* ================= EYE / GEN BUTTONS ================= */
.pla-eye-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: color .2s, background .2s, transform .2s;
}
.pla-eye-btn:hover {
  color: var(--green);
  background: var(--green-soft);
  transform: scale(1.08);
}

.pla-gen-btn {
  background: transparent;
  border: none;
  color: var(--green);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: .78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: background .2s, transform .2s;
}
.pla-gen-btn:hover {
  background: var(--green-soft);
  transform: translateY(-1px);
}

/* ================= STRENGTH METER ================= */
.pla-strength { margin-top: 6px; }
.pla-strength-bars {
  display: flex;
  gap: 5px;
  margin-bottom: 6px;
}
.pla-bar {
  height: 5px;
  flex: 1;
  background: #e2e8f0;
  border-radius: 3px;
  transition: background .3s ease;
}
.pla-strength-label {
  font-size: .72rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
.pla-strength-label b { font-weight: 700; }

.pla-s-weak .pla-bar:nth-child(1) { background: #ef4444; }
.pla-s-fair .pla-bar:nth-child(1),
.pla-s-fair .pla-bar:nth-child(2) { background: #f59e0b; }
.pla-s-good .pla-bar:nth-child(1),
.pla-s-good .pla-bar:nth-child(2),
.pla-s-good .pla-bar:nth-child(3) { background: #3b82f6; }
.pla-s-strong .pla-bar {
  background: var(--green);
  box-shadow: 0 0 8px rgba(22, 163, 74, 0.5);
}

/* ================= REQUIREMENTS ================= */
.pla-reqs {
  list-style: none;
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 10px;
}
.pla-reqs li {
  font-size: .72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color .25s;
}
.pla-reqs li i {
  font-size: .6rem;
  color: #cbd5e1;
  transition: color .25s, transform .25s;
}
.pla-reqs li.ok { color: var(--green-dark); }
.pla-reqs li.ok i { color: var(--green); transform: scale(1.2); }

/* ================= BUTTONS ================= */
.pla-btn {
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: .92rem;
  padding: 12px 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease;
}
.pla-btn-primary {
  background: linear-gradient(135deg, var(--green-light), var(--green-dark));
  color: #ffffff;
  box-shadow: 0 10px 24px -10px rgba(22, 163, 74, 0.9);
  position: relative;
  overflow: hidden;
}
.pla-btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.5) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform .8s ease;
}
.pla-btn-primary:hover::after { transform: translateX(100%); }
.pla-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -12px rgba(22, 163, 74, 1);
}
.pla-btn-primary:active { transform: translateY(0); }

.pla-btn-ghost {
  background: var(--bg-soft);
  color: var(--text);
  border: 1px solid var(--border);
}
.pla-btn-ghost:hover {
  background: var(--green-soft);
  border-color: var(--green);
  color: var(--green-dark);
}

/* ================= ROWS & LINKS ================= */
.pla-row-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.pla-link {
  font-size: .8rem;
  color: var(--green);
  text-decoration: none;
  transition: color .2s;
  font-weight: 600;
}
.pla-link:hover {
  text-decoration: underline;
  color: var(--green-dark);
}

.pla-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: .75rem;
  margin: 4px 0;
}
.pla-divider::before,
.pla-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.pla-socials { display: flex; gap: 10px; }
.pla-socials .pla-btn { flex: 1; padding: 10px; font-size: .85rem; }

.pla-terms {
  font-size: .72rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.5;
}
.pla-terms a {
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
}
.pla-terms a:hover { text-decoration: underline; }

/* ================= CHECKBOX ================= */
input[type="checkbox"] { accent-color: var(--green); }

/* ================= BANNERS ================= */
.pla-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 16px;
  animation: plaBannerIn .35s ease;
}
@keyframes plaBannerIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.pla-banner.error {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}
.pla-banner.success {
  background: #f0fdf4;
  color: #15803d;
  border: 1px solid #bbf7d0;
}

/* ================= HONEYPOT ================= */
.pla-honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 420px) {
  .pla-auth-card { padding: 22px 18px; }
  .pla-reqs { grid-template-columns: 1fr; }
  .pla-brand-logo-img { height: 52px; }
}
/* ================= PAGE HEADER (Forgot/Reset) ================= */
.pla-page-header {
  text-align: center;
  margin-bottom: 22px;
}
.pla-page-header h2 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .3px;
  margin-bottom: 8px;
}
.pla-page-header p {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 340px;
  margin: 0 auto;
}