/* =========================================================================
   پیام‌بر — Premium Login Experience
   Signal Grid Portal — Museum-Quality Craftsmanship
   ========================================================================= */

/* ─── Page Overrides ────────────────────────────────────────────────────── */
body.login-page {
  overflow-x: hidden;
  min-height: 100vh;
}

body.login-page .topbar,
body.login-page .tabs,
body.login-page .toast-container {
  display: none !important;
}

body.login-page .container {
  max-width: none;
  padding: 0;
  margin: 0;
}

/* ─── Background Scene ─────────────────────────────────────────────────── */
.login-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: linear-gradient(160deg, #070b16 0%, #0c1220 40%, #070b16 100%);
}

.login-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.35;
  will-change: transform;
  pointer-events: none;
}

.login-orb-1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.35) 0%, transparent 70%);
  top: -250px;
  right: -150px;
  animation: orb-drift-1 25s ease-in-out infinite;
}

.login-orb-2 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
  bottom: -200px;
  left: -120px;
  animation: orb-drift-2 30s ease-in-out infinite;
}

.login-orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.25) 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation: orb-drift-3 22s ease-in-out infinite;
}

.login-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 70%);
  pointer-events: none;
  animation: grid-pan 90s linear infinite;
}

@keyframes grid-pan {
  from { background-position: 0 0; }
  to { background-position: 64px 64px; }
}

.login-noise {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  pointer-events: none;
}

/* ─── Viewport & Layout ────────────────────────────────────────────────── */
.login-viewport {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.login-stage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  max-width: 1100px;
  width: 100%;
  align-items: center;
}

.login-stage--centered {
  grid-template-columns: 1fr;
  max-width: 520px;
  justify-items: center;
}

/* ─── Brand Panel ──────────────────────────────────────────────────────── */
.login-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: login-fade-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 0.1s;
}

.login-brand-visual {
  position: relative;
  width: 140px;
  height: 140px;
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-brand-ring {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-2xl);
  border: 1.5px solid rgba(34, 211, 238, 0.2);
  animation: brand-ring-rotate 20s linear infinite;
}

.login-brand-ring::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  background: var(--color-cyan);
  border-radius: 50%;
  box-shadow: 0 0 16px var(--color-cyan);
  transform: translateX(-50%);
}

.login-brand-ring-2 {
  position: absolute;
  inset: 12px;
  border-radius: var(--radius-xl);
  border: 1px dashed rgba(167, 139, 250, 0.15);
  animation: brand-ring-rotate 30s linear infinite reverse;
}

.login-brand-mark-lg {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 24px -8px rgba(34, 211, 238, 0.5);
  font-size: 3rem;
  position: relative;
  z-index: 2;
  animation: brand-pulse 5s ease-in-out infinite;
}

.login-brand-title {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  background: linear-gradient(135deg, #22d3ee 0%, #6366f1 40%, #a78bfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-4);
  letter-spacing: -0.03em;
  line-height: 1.1;
  animation: login-fade-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 0.25s;
}

.login-brand-desc {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 380px;
  line-height: 1.7;
  margin-bottom: var(--space-8);
  animation: login-fade-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 0.4s;
}

.login-brand-tags {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  animation: login-fade-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 0.55s;
}

.login-brand-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
}

.login-brand-tag:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

/* ─── Form Card ────────────────────────────────────────────────────────── */
.login-card {
  background: rgba(12, 18, 32, 0.55);
  backdrop-filter: blur(32px) saturate(140%);
  -webkit-backdrop-filter: blur(32px) saturate(140%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8) var(--space-7);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  animation: login-slide-in-right 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: 0.2s;
  transition: border-color 0.4s ease;
}

.login-card:hover {
  border-color: rgba(34, 211, 238, 0.15);
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-cyan) 50%, transparent 100%);
  opacity: 0.6;
}

.login-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, rgba(34, 211, 238, 0.03), transparent);
  pointer-events: none;
}

.login-card-glow {
  position: absolute;
  top: -60%;
  right: -40%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: glow-drift 18s ease-in-out infinite;
}

/* ─── Card Header ──────────────────────────────────────────────────────── */
.login-header {
  text-align: center;
  margin-bottom: var(--space-7);
  animation: login-fade-in 0.6s ease-out 0.4s both;
}

.login-header-mark {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 24px -8px rgba(34, 211, 238, 0.5);
  font-size: 1.5rem;
  margin-bottom: var(--space-4);
  animation: brand-pulse 4s ease-in-out infinite;
}

.login-header h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
  letter-spacing: -0.02em;
}

.login-header p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ─── Tabs ─────────────────────────────────────────────────────────────── */
.login-tabs {
  position: relative;
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: login-fade-in 0.6s ease-out 0.5s both;
}

.login-tab {
  flex: 1;
  position: relative;
  z-index: 2;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: color 0.3s ease;
  font-family: var(--font-sans);
  white-space: nowrap;
  text-align: center;
}

.login-tab:hover {
  color: var(--color-text-primary);
}

.login-tab.active {
  color: var(--color-text-inverse);
}

.login-tab-indicator {
  position: absolute;
  top: var(--space-1);
  bottom: var(--space-1);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px -4px rgba(34, 211, 238, 0.5);
  transition: left 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), width 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), right 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 1;
}

/* ─── Panes ────────────────────────────────────────────────────────────── */
.login-pane {
  display: none;
  animation: login-fade-in 0.4s ease-out both;
}

.login-pane.active {
  display: block;
}

/* ─── Form Inputs ──────────────────────────────────────────────────────── */
.login-input-group {
  margin-bottom: var(--space-5);
}

.login-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.01em;
}

.login-input {
  width: 100%;
  padding: var(--space-4) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  outline: none;
  line-height: 1.6;
}

.login-input::placeholder {
  color: var(--color-text-tertiary);
  font-weight: 400;
}

.login-input:hover {
  border-color: var(--color-border-strong);
  background: rgba(255, 255, 255, 0.04);
}

.login-input:focus {
  border-color: var(--color-cyan);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.1), 0 0 24px -8px rgba(34, 211, 238, 0.25);
  transform: translateY(-1px);
}

.login-input-error {
  border-color: var(--color-danger) !important;
  animation: login-shake 0.5s ease-out;
}

.login-input-error:focus {
  box-shadow: 0 0 0 4px rgba(251, 106, 122, 0.1), 0 0 24px -8px rgba(251, 106, 122, 0.25) !important;
}

.login-hint {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-2);
  line-height: 1.6;
}

.login-hint a {
  color: var(--color-cyan);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.login-hint a:hover {
  color: #67e8f9;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.login-error {
  display: none;
  padding: var(--space-3) var(--space-4);
  background: rgba(251, 106, 122, 0.08);
  border: 1px solid rgba(251, 106, 122, 0.25);
  border-radius: var(--radius-md);
  color: #ffb3bd;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  animation: login-fade-in 0.3s ease-out;
}

.login-error.visible {
  display: block;
}

/* ─── Buttons ──────────────────────────────────────────────────────────── */
.login-btn {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-inverse);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 24px -8px rgba(34, 211, 238, 0.5);
  letter-spacing: 0.01em;
  animation: login-fade-in 0.5s ease-out 0.7s both;
}

.login-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.login-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(34, 211, 238, 0.65);
  background: var(--gradient-primary-hover);
}

.login-btn:hover:not(:disabled)::before {
  opacity: 1;
}

.login-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 6px 16px -8px rgba(34, 211, 238, 0.5);
}

.login-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-btn-success {
  background: linear-gradient(135deg, var(--color-bale) 0%, #10b981 100%);
  box-shadow: 0 8px 24px -8px rgba(45, 212, 165, 0.5);
}

.login-btn-success:hover:not(:disabled) {
  background: linear-gradient(135deg, #34d399 0%, #059669 100%);
  box-shadow: 0 12px 32px -8px rgba(45, 212, 165, 0.65);
}

.login-btn-loader {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto;
}

.login-btn.loading .login-btn-text {
  display: none;
}

.login-btn.loading .login-btn-loader {
  display: block;
}

/* ─── Loading State ────────────────────────────────────────────────────── */
.login-loading {
  text-align: center;
  padding: var(--space-10) var(--space-5);
}

.login-loader-ring {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-cyan);
  animation: spin 0.9s linear infinite;
  margin: 0 auto var(--space-5) auto;
  box-shadow: 0 0 24px -4px rgba(34, 211, 238, 0.3);
}

.login-loading h4 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 var(--space-2) 0;
}

.login-loading p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ─── Footer Link ──────────────────────────────────────────────────────── */
.login-footer {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  animation: login-fade-in 0.5s ease-out 0.8s both;
}

.login-footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.login-footer a:hover {
  color: var(--color-text-primary);
  transform: translateX(-4px);
}

/* ─── Toast Notifications ──────────────────────────────────────────────── */
.login-toast-area {
  position: fixed;
  top: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
  width: calc(100% - var(--space-6));
  max-width: 420px;
}

.login-toast {
  pointer-events: auto;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border-strong);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  animation: toast-slide-down 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: auto;
}

.login-toast.removing {
  animation: toast-slide-up 0.3s ease-in forwards;
}

.login-toast-success {
  background: rgba(12, 18, 32, 0.9);
  border-color: rgba(52, 211, 153, 0.4);
  color: #86efc9;
}

.login-toast-danger {
  background: rgba(12, 18, 32, 0.9);
  border-color: rgba(251, 106, 122, 0.4);
  color: #ffb3bd;
}

.login-toast-warning {
  background: rgba(12, 18, 32, 0.9);
  border-color: rgba(244, 183, 64, 0.4);
  color: #ffd98a;
}

.login-toast-info {
  background: rgba(12, 18, 32, 0.9);
  border-color: rgba(34, 211, 238, 0.4);
  color: #9ee9f7;
}

.login-toast-close {
  background: none;
  border: none;
  color: inherit;
  opacity: 0.7;
  cursor: pointer;
  padding: 0;
  margin-right: auto;
  font-size: 1.1rem;
  line-height: 1;
  transition: opacity 0.2s ease;
}

.login-toast-close:hover {
  opacity: 1;
}

/* ─── Hidden States ────────────────────────────────────────────────────── */
.login-hidden {
  display: none !important;
}

/* ─── Animations ───────────────────────────────────────────────────────── */
@keyframes login-fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes login-slide-in-right {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes login-shake {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-6px); }
  30% { transform: translateX(6px); }
  45% { transform: translateX(-4px); }
  60% { transform: translateX(4px); }
  75% { transform: translateX(-2px); }
  90% { transform: translateX(2px); }
}

@keyframes brand-pulse {
  0%, 100% {
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 24px -8px rgba(34, 211, 238, 0.5);
  }
  50% {
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 32px -4px rgba(34, 211, 238, 0.75), 0 0 48px -12px rgba(99, 102, 241, 0.4);
  }
}

@keyframes brand-ring-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes glow-drift {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
  50% { transform: translate(20px, -15px) scale(1.1); opacity: 0.8; }
}

@keyframes orb-drift-1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(30px, 10px) scale(1.02); }
}

@keyframes orb-drift-2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-30px, -20px) scale(1.03); }
  66% { transform: translate(20px, 30px) scale(0.97); }
}

@keyframes orb-drift-3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(15px, -10px) scale(1.06); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes toast-slide-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-slide-up {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

@keyframes ripple-expand {
  from {
    transform: scale(0);
    opacity: 0.6;
  }
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ─── Responsive: Tablet ────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .login-stage {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 520px;
  }

  .login-brand {
    display: none;
  }

  .login-card {
    padding: var(--space-7) var(--space-6);
  }

  .login-viewport {
    padding: var(--space-5);
    align-items: flex-start;
    padding-top: max(var(--space-8), 12vh);
  }
}

/* ─── Responsive: Mobile ────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .login-viewport {
    padding: var(--space-4);
    padding-top: max(var(--space-6), 8vh);
    align-items: flex-start;
  }

  .login-card {
    padding: var(--space-6) var(--space-5);
    border-radius: var(--radius-xl);
  }

  .login-brand-mark-lg {
    width: 80px;
    height: 80px;
    font-size: 2.2rem;
  }

  .login-header-mark {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }

  .login-tab {
    font-size: var(--text-sm);
    padding: var(--space-3) var(--space-3);
  }

  .login-input {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
  }

  .login-btn {
    padding: var(--space-4);
    font-size: var(--text-base);
  }
}

/* ─── Reduced Motion ───────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .login-orb,
  .login-brand-ring,
  .login-brand-ring-2,
  .login-brand-mark-lg,
  .login-header-mark {
    animation: none;
  }

  .login-card,
  .login-brand,
  .login-header,
  .login-tabs,
  .login-pane,
  .login-btn,
  .login-footer {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

/* ─── Focus Visible ────────────────────────────────────────────────────── */
.login-tab:focus-visible,
.login-input:focus-visible,
.login-btn:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

.login-tab:focus:not(:focus-visible),
.login-input:focus:not(:focus-visible),
.login-btn:focus:not(:focus-visible) {
  outline: none;
}

/* ─── Selection ────────────────────────────────────────────────────────── */
.login-scene ::selection {
  background: rgba(34, 211, 238, 0.3);
  color: var(--color-text-primary);
}