:root {
  --bg: #080e17;
  --panel: #0f1923;
  --panel-elev: #162130;
  --ink: #e6edf4;
  --muted: #7a93aa;
  --accent: #3aa4ff;
  --accent2: #7c5cfc;
  --border: #1e3147;
  --success: #22cc66;
  --danger: #ff5c5c;
}

*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "IranYekanX","IRANYekanX","IranYekanx", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  direction: rtl;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── blobs ─── */
.auth-bg {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  position: relative;
}

.auth-blobs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
}

.blob-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, #3aa4ff 0%, transparent 70%);
  top: -120px; right: -100px;
  animation: float1 12s ease-in-out infinite;
}

.blob-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #7c5cfc 0%, transparent 70%);
  bottom: -80px; left: -80px;
  animation: float2 15s ease-in-out infinite;
}

.blob-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #22cc66 0%, transparent 70%);
  top: 40%; left: 40%;
  animation: float3 10s ease-in-out infinite;
}

@keyframes float1 {
  0%,100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(30px, 40px) scale(1.08); }
}
@keyframes float2 {
  0%,100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(-20px,-30px) scale(1.1); }
}
@keyframes float3 {
  0%,100% { transform: translate(0,0); }
  50%      { transform: translate(20px,-20px); }
}

/* ─── card ─── */
.auth-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: rgba(15,25,35,0.82);
  border: 1px solid rgba(58,164,255,0.15);
  border-radius: 20px;
  padding: 32px 28px;
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(58,164,255,0.06);
}

/* ─── brand ─── */
.auth-brand {
  text-align: center;
  margin-bottom: 24px;
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 16px;
  background: rgba(58,164,255,0.1);
  border: 1px solid rgba(58,164,255,0.25);
  margin-bottom: 12px;
}

.auth-logo svg { width: 36px; height: 36px; }

.auth-title {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, #e6edf4 0%, #7ec8ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.auth-subtitle {
  font-size: 13px;
  color: var(--muted);
}

/* ─── error ─── */
.auth-error {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,92,92,0.1);
  border: 1px solid rgba(255,92,92,0.3);
  border-radius: 10px;
  padding: 10px 14px;
  color: #ff9b9b;
  font-size: 13px;
  margin-bottom: 16px;
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

/* ─── tabs ─── */
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
}

.auth-tab {
  border: none;
  border-radius: 9px;
  padding: 9px 0;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--muted);
  transition: all 0.2s ease;
}

.auth-tab.active {
  background: linear-gradient(135deg, rgba(58,164,255,0.2), rgba(124,92,252,0.2));
  color: var(--ink);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  border: 1px solid rgba(58,164,255,0.25);
}

/* ─── form ─── */
.auth-form { display: grid; gap: 16px; }
.auth-form.hidden { display: none; }

.auth-field { display: grid; gap: 6px; }

.auth-field label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.hint-small {
  font-weight: 400;
  font-size: 11px;
  color: #4a6a80;
}

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

.field-icon {
  position: absolute;
  right: 12px;
  width: 18px; height: 18px;
  color: var(--muted);
  pointer-events: none;
  z-index: 1;
}

.field-wrap input {
  width: 100%;
  padding: 11px 40px 11px 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255,255,255,0.04);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.field-wrap input:focus {
  border-color: rgba(58,164,255,0.5);
  box-shadow: 0 0 0 3px rgba(58,164,255,0.12);
  background: rgba(58,164,255,0.04);
}

.field-wrap input::placeholder { color: #3a5570; }

.toggle-pass {
  position: absolute;
  left: 10px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--muted);
  display: flex;
  align-items: center;
}
.toggle-pass svg { width: 18px; height: 18px; opacity: 0.5; }

/* ─── strength bar ─── */
.strength-bar {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 4px;
}

.strength-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  transition: width 0.3s ease, background 0.3s ease;
  background: #ff4444;
}

.strength-label {
  font-size: 11px;
  min-height: 16px;
  display: block;
}

/* ─── btn ─── */
.auth-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  background: linear-gradient(135deg, #3aa4ff, #7c5cfc);
  color: #fff;
  transition: opacity 0.2s, transform 0.15s;
  box-shadow: 0 8px 20px rgba(58,164,255,0.25);
  margin-top: 4px;
}

.auth-btn:hover { opacity: 0.92; transform: translateY(-1px); }
.auth-btn:active { transform: translateY(0); }

/* ─── footer ─── */
.auth-footer {
  text-align: center;
  margin-top: 18px;
  font-size: 12px;
  color: #2e4a62;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

@media (max-width: 480px) {
  .auth-wrap { padding: 24px 18px; border-radius: 16px; }
  .auth-title { font-size: 19px; }
}