:root {
  --bg: #0d1117;
  --bg-soft: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
  --text: #e6edf3;
  --text-dim: #94a3b8;
  --text-faint: #64748b;
  --purple: #8b5cf6;
  --fuchsia: #d946ef;
  --cyan: #06b6d4;
  --blue: #3b82f6;
  --grad-purple: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%);
  --grad-cyan: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --glow: 0 0 20px rgba(139, 92, 246, 0.45);
  --glow-cyan: 0 0 20px rgba(6, 182, 212, 0.45);
  --radius: 24px;
  --card-bg: rgba(255, 255, 255, 0.04);
  --input-bg: rgba(0, 0, 0, 0.3);
}

html.light {
  --bg: #eef2ff;
  --bg-soft: rgba(0, 0, 0, 0.03);
  --border: rgba(15, 23, 42, 0.08);
  --text: #0f172a;
  --text-dim: #475569;
  --text-faint: #64748b;
  --card-bg: rgba(255, 255, 255, 0.75);
  --input-bg: rgba(255, 255, 255, 0.7);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  font-family: "Vazirmatn", "Tahoma", sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.4s ease;
}

::selection {
  background: rgba(139, 92, 246, 0.4);
}

/* --------------------------------------------------------------------- */
/* Background decor                                                       */
/* --------------------------------------------------------------------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.grid-overlay {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image: linear-gradient(rgba(139, 92, 246, 0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 92, 246, 0.25) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}
.blob {
  position: absolute;
  border-radius: 999px;
  filter: blur(120px);
  opacity: 0.5;
}
.blob-purple {
  top: -8rem;
  right: -8rem;
  width: 28rem;
  height: 28rem;
  background: rgba(139, 92, 246, 0.3);
  animation: blob 12s ease-in-out infinite;
}
.blob-cyan {
  top: 33%;
  left: -10rem;
  width: 26rem;
  height: 26rem;
  background: rgba(6, 182, 212, 0.25);
  animation: blob 14s ease-in-out infinite 1s;
}
.blob-fuchsia {
  bottom: -10rem;
  right: 25%;
  width: 24rem;
  height: 24rem;
  background: rgba(217, 70, 239, 0.25);
  animation: blob 16s ease-in-out infinite 2s;
}
@keyframes blob {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.2); opacity: 0.65; }
}

/* --------------------------------------------------------------------- */
/* Layout                                                                 */
/* --------------------------------------------------------------------- */
.page {
  position: relative;
  z-index: 10;
}
.container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  min-height: 100vh;
}
@media (min-width: 640px) {
  .container { padding: 3rem 1.5rem; }
}
.center-screen {
  justify-content: center;
  align-items: center;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.topbar-abs {
  position: absolute;
  top: 1.5rem;
  left: 1rem;
  right: 1rem;
}

/* --------------------------------------------------------------------- */
/* Hero                                                                   */
/* --------------------------------------------------------------------- */
.hero { text-align: center; }
.hero-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1.25rem;
  border-radius: 22px;
  display: grid;
  place-items: center;
  background: var(--grad-purple);
  box-shadow: 0 0 45px rgba(139, 92, 246, 0.55);
  color: #fff;
}
.hero-icon .icon { width: 2rem; height: 2rem; }
.hero-title {
  font-size: clamp(1.9rem, 5vw, 3rem);
  font-weight: 900;
  margin: 0;
  background: var(--grad-purple);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.glow-text { animation: glow 2.5s ease-in-out infinite; }
@keyframes glow {
  0%, 100% { filter: drop-shadow(0 0 14px rgba(139, 92, 246, 0.55)); }
  50% { filter: drop-shadow(0 0 30px rgba(217, 70, 239, 0.85)); }
}
.hero-sub {
  margin: 1rem auto 0;
  max-width: 34rem;
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* --------------------------------------------------------------------- */
/* Cards / glass                                                         */
/* --------------------------------------------------------------------- */
.card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .card { padding: 2rem; }
}
html.light .card { box-shadow: 0 8px 40px rgba(99, 102, 241, 0.12); }

.card-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.card-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
}
.grad-purple { background: var(--grad-purple); box-shadow: var(--glow); }
.grad-cyan { background: var(--grad-cyan); box-shadow: var(--glow-cyan); }
.card-title { margin: 0; font-size: 1.15rem; font-weight: 700; }
.card-desc { margin: 0.15rem 0 0; font-size: 0.78rem; color: var(--text-dim); }

/* --------------------------------------------------------------------- */
/* Forms                                                                 */
/* --------------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: 0.6rem; }
.field-head { display: flex; align-items: center; justify-content: space-between; }
.label { font-size: 0.85rem; font-weight: 500; color: var(--text-dim); }

.input {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.input::placeholder { color: var(--text-faint); }
.input:focus { border-color: rgba(139, 92, 246, 0.6); box-shadow: var(--glow); }
.textarea { resize: vertical; min-height: 9rem; font-family: ui-monospace, "SFMono-Regular", monospace; font-size: 0.8rem; }
.mono { font-family: ui-monospace, "SFMono-Regular", monospace; font-size: 0.8rem; }

.field-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-faint);
}
.meta-note { display: inline-flex; align-items: center; gap: 0.25rem; }
.meta-note .icon { color: var(--purple); }

.input-wrap { position: relative; flex: 1; }
.input-adorn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-faint);
  width: 1.25rem;
  height: 1.25rem;
}
.input-code {
  text-align: center;
  font-family: ui-monospace, monospace;
  font-size: 1.1rem;
  letter-spacing: 0.5em;
  padding-right: 2.75rem;
}
.receive-row { display: flex; flex-direction: column; gap: 0.75rem; }
@media (min-width: 640px) { .receive-row { flex-direction: row; } }

/* --------------------------------------------------------------------- */
/* Buttons                                                              */
/* --------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 16px;
  padding: 0.75rem 1.25rem;
  font-size: 0.88rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease, opacity 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: scale(1.04); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-gradient {
  background: var(--grad-purple);
  color: #fff;
  box-shadow: var(--glow);
}
.btn-ghost {
  border-color: var(--border);
  background: var(--bg-soft);
  color: var(--text);
}
.btn-ghost:hover { border-color: rgba(6, 182, 212, 0.5); }
.btn-icon { padding: 0.7rem; }
.btn-sm { padding: 0.45rem 0.8rem; font-size: 0.78rem; }
.btn-block-sm { align-self: flex-start; }
@media (max-width: 480px) { .btn-block-sm { width: 100%; } }
.btn-danger { color: #fca5a5; }
.btn-danger:hover { border-color: rgba(244, 63, 94, 0.5); }

/* --------------------------------------------------------------------- */
/* Icons                                                                 */
/* --------------------------------------------------------------------- */
.icon { width: 1.25rem; height: 1.25rem; flex-shrink: 0; }
.icon-sm { width: 1rem; height: 1rem; }
.icon-sun, .icon-moon { display: none; }
html.dark .icon-sun { display: block; }
html.light .icon-moon { display: block; }

/* --------------------------------------------------------------------- */
/* Badges / misc                                                        */
/* --------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 0.35rem 0.75rem;
  font-size: 0.72rem;
  color: var(--text-dim);
}
.dot { width: 0.5rem; height: 0.5rem; border-radius: 999px; display: inline-block; }
.dot-cyan { background: var(--cyan); }
.dot-green { background: #34d399; }
.dot-red { background: #fb7185; }
.pulse { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.grad-text {
  background: var(--grad-purple);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

/* --------------------------------------------------------------------- */
/* Result / generated code card                                          */
/* --------------------------------------------------------------------- */
.result { display: none; }
.result.show { display: block; }
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 1.25rem 0;
}
.inner-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--input-bg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.code-block { text-align: center; }
@media (min-width: 768px) { .code-block { text-align: right; } }
.code-label { font-size: 0.85rem; color: var(--text-dim); margin: 0 0 0.5rem; }
.neon-code {
  font-size: clamp(3rem, 12vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 0.2em;
  margin: 0;
  background: var(--grad-purple);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 40px rgba(139, 92, 246, 0.55);
  animation: pop 0.4s ease-out;
}
@keyframes pop { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border-radius: 999px;
  border: 1px solid;
  padding: 0.35rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 700;
}
.status-active { border-color: rgba(16, 185, 129, 0.4); background: rgba(16, 185, 129, 0.1); color: #6ee7b7; }
.status-expired { border-color: rgba(244, 63, 94, 0.4); background: rgba(244, 63, 94, 0.1); color: #fda4af; }

.two-col {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .two-col { grid-template-columns: 1fr auto; align-items: center; }
}
.viewer-grid { display: grid; gap: 1.5rem; }
@media (min-width: 768px) {
  .viewer-grid { grid-template-columns: 1fr auto; align-items: start; }
}
.viewer-info { display: flex; flex-direction: column; gap: 1rem; }

.timer-box {
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  padding: 1rem;
  text-align: center;
}
.mini-label { font-size: 0.72rem; color: var(--text-faint); margin: 0 0 0.35rem; }
.mini-label.center { text-align: center; }
.countdown {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--cyan);
}
.countdown .icon { color: var(--cyan); }
.countdown-value {
  font-family: ui-monospace, monospace;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-shadow: 0 0 18px rgba(6, 182, 212, 0.5);
}
.countdown.expired, .countdown.expired .icon { color: #fb7185; }
.countdown.expired .countdown-value { text-shadow: none; }

.date-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.date-cell {
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  padding: 0.75rem;
}
.date-value { margin: 0; font-size: 0.8rem; font-weight: 500; color: var(--text); }

.qr-wrap { display: flex; flex-direction: column; align-items: center; gap: 0.6rem; }
.qr-box {
  background: #fff;
  border-radius: 16px;
  padding: 0.75rem;
  box-shadow: var(--glow);
  line-height: 0;
}
.qr-box img, .qr-box svg { width: 176px; height: 176px; display: block; }

.config-view {
  max-height: 24rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.4);
  color: var(--text);
  padding: 1rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  margin: 0;
}
html.light .config-view { background: rgba(15, 23, 42, 0.05); }

.copy-row { display: flex; gap: 0.5rem; align-items: center; }
.copy-row .input { flex: 1; }
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.expired-banner {
  border-radius: 16px;
  border: 1px solid rgba(244, 63, 94, 0.3);
  background: rgba(244, 63, 94, 0.1);
  color: #fda4af;
  padding: 0.75rem;
  text-align: center;
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------- */
/* State pages                                                          */
/* --------------------------------------------------------------------- */
.state-card { align-items: center; text-align: center; padding: 2.5rem; max-width: 26rem; }
.state-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 20px;
  display: grid;
  place-items: center;
  border: 1px solid;
}
.state-icon .icon { width: 2rem; height: 2rem; }
.state-error { border-color: rgba(244, 63, 94, 0.3); background: rgba(244, 63, 94, 0.1); color: #fda4af; }
.state-warn { border-color: rgba(245, 158, 11, 0.3); background: rgba(245, 158, 11, 0.1); color: #fcd34d; }
.state-message { font-size: 1.05rem; font-weight: 700; margin: 0; }
.state-error-text { color: #fda4af; }
.state-warn-text { color: #fcd34d; }

/* --------------------------------------------------------------------- */
/* Footer                                                              */
/* --------------------------------------------------------------------- */
.footer {
  margin-top: auto;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* --------------------------------------------------------------------- */
/* Toast                                                              */
/* --------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: 1rem;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0 1rem;
  pointer-events: none;
}
.toast {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--glow);
  padding: 0.7rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  pointer-events: auto;
  animation: toast-in 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.toast.hide { animation: toast-out 0.25s ease forwards; }
.toast .icon-ok { color: #34d399; }
.toast .icon-err { color: #fb7185; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-1.25rem) scale(0.9); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(-1rem) scale(0.9); } }

/* --------------------------------------------------------------------- */
/* Animations                                                          */
/* --------------------------------------------------------------------- */
.fade-in { animation: fade-in 0.5s ease-out both; }
.fade-in:nth-of-type(2) { animation-delay: 0.05s; }
.fade-in:nth-of-type(3) { animation-delay: 0.1s; }
@keyframes fade-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.float { animation: float 6s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.spin { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}