:root {
  color-scheme: dark;
  --bg: #050505;
  --surface: rgba(18, 18, 18, 0.9);
  --surface-strong: #101010;
  --surface-soft: rgba(255, 255, 255, 0.08);
  --text: #ffffff;
  --muted: #b8b8b8;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 212, 0, 0.38);
  --accent: #ffd400;
  --accent-two: #ffffff;
  --accent-three: #1f1f1f;
  --danger: #ff5c5c;
  --success: #ffd400;
  --button-text: #050505;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.48);
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Arial, sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f3e8;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #fffdf5;
  --surface-soft: rgba(5, 5, 5, 0.07);
  --text: #111111;
  --muted: #64615a;
  --line: rgba(5, 5, 5, 0.14);
  --line-strong: rgba(180, 139, 0, 0.4);
  --accent: #c99700;
  --accent-two: #fff3ad;
  --accent-three: #f5d248;
  --danger: #c73737;
  --success: #a77d00;
  --button-text: #0b0b0b;
  --shadow: 0 24px 80px rgba(40, 34, 13, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 212, 0, 0.18), transparent 27rem),
    radial-gradient(circle at 88% 16%, rgba(255, 255, 255, 0.08), transparent 25rem),
    radial-gradient(circle at 74% 88%, rgba(255, 212, 0, 0.1), transparent 30rem),
    linear-gradient(120deg, rgba(255, 212, 0, 0.07) 0 1px, transparent 1px 92px),
    linear-gradient(150deg, rgba(255, 255, 255, 0.045) 0 1px, transparent 1px 116px),
    var(--bg);
  background-attachment: fixed;
}

:root[data-theme="light"] body {
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 212, 0, 0.22), transparent 25rem),
    radial-gradient(circle at 86% 10%, rgba(255, 255, 255, 0.92), transparent 28rem),
    radial-gradient(circle at 70% 82%, rgba(201, 151, 0, 0.12), transparent 28rem),
    linear-gradient(120deg, rgba(201, 151, 0, 0.08) 0 1px, transparent 1px 92px),
    linear-gradient(150deg, rgba(5, 5, 5, 0.035) 0 1px, transparent 1px 116px),
    var(--bg);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 26%, black, transparent 74%);
  content: "";
}

:root[data-theme="light"] body::before {
  background:
    linear-gradient(rgba(5, 5, 5, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 5, 5, 0.035) 1px, transparent 1px);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

[hidden] {
  display: none !important;
}

.site-shell {
  width: min(1440px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 16px clamp(14px, 4vw, 56px) 38px;
}

.topbar,
.converter-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.topbar {
  position: sticky;
  top: 12px;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 10px 12px;
}

.brand,
.nav-actions,
.header-controls,
.language-switch {
  display: flex;
  align-items: center;
}

.header-controls {
  gap: 8px;
  justify-content: flex-end;
}

.brand {
  gap: 10px;
  font-weight: 900;
}

.brand,
.nav-button,
.lang-button,
.theme-toggle,
.primary-button,
.secondary-button,
.download-button,
.icon-button,
.modal-tab,
.contact-link {
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease,
    color 160ms ease;
}

.brand:hover,
.nav-button:hover,
.lang-button:hover,
.theme-toggle:hover,
.secondary-button:hover,
.download-button:hover,
.contact-link:hover {
  transform: translateY(-1px);
}

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  border: 2px solid var(--text);
  background:
    linear-gradient(135deg, var(--accent) 0 52%, transparent 52%),
    var(--surface-strong);
  box-shadow: inset 0 0 0 2px var(--bg);
}

.language-switch {
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
}

.lang-button,
.nav-button,
.theme-toggle,
.primary-button,
.secondary-button,
.download-button,
.icon-button,
.modal-tab {
  min-height: 42px;
  border: 0;
  border-radius: var(--radius);
  font-weight: 900;
}

.nav-actions {
  justify-content: center;
  gap: 8px;
}

.nav-button {
  padding: 0 14px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
}

.nav-button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 212, 0, 0.1);
  color: var(--accent);
}

.theme-toggle {
  min-width: 72px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.theme-toggle:hover {
  border-color: var(--line-strong);
  background: rgba(255, 212, 0, 0.1);
  color: var(--accent);
}

.lang-button {
  min-width: 44px;
  background: transparent;
  color: var(--muted);
}

.lang-button.is-active {
  background: var(--accent);
  color: var(--bg);
}

:root[data-theme="light"] .language-switch,
:root[data-theme="light"] .theme-toggle,
:root[data-theme="light"] .modal-tabs,
:root[data-theme="light"] .icon-button,
:root[data-theme="light"] .secondary-button {
  background: rgba(5, 5, 5, 0.055);
}

button:focus-visible,
a:focus-visible,
label:focus-within,
select:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(255, 212, 0, 0.48);
  outline-offset: 3px;
}

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 96px);
  padding-block: clamp(22px, 3vw, 38px) 28px;
}

.hero-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  max-width: min(100%, 820px);
  min-height: 46px;
  margin: 0 auto clamp(18px, 2.5vw, 28px);
  padding: 0 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 212, 0, 0.11);
  color: var(--accent);
  font-size: clamp(0.92rem, 1.5vw, 1.18rem);
  font-weight: 950;
  line-height: 1.2;
  text-align: center;
  text-transform: uppercase;
  box-shadow: 0 18px 56px rgba(255, 212, 0, 0.12);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 700px);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
  justify-content: center;
}

.converter-card {
  width: 100%;
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: none;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: auto;
  padding: 0;
  text-align: center;
}

.card-header,
.panel-title-row,
.progress-row,
.action-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.card-header {
  margin-bottom: 18px;
}

.label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(2.45rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.28rem, 2vw, 2rem);
  line-height: 1.1;
}

h3 {
  margin-bottom: 0;
  font-size: 1.35rem;
  line-height: 1.16;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 212, 0, 0.1);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.status-pill.is-error {
  border-color: color-mix(in srgb, var(--danger) 54%, transparent);
  color: var(--danger);
}

.status-pill.is-success {
  border-color: color-mix(in srgb, var(--success) 54%, transparent);
  color: var(--success);
}

.drop-zone {
  display: grid;
  place-items: center;
  min-height: 190px;
  padding: 22px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 212, 0, 0.11), transparent 54%),
    rgba(255, 255, 255, 0.045);
  text-align: center;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

:root[data-theme="light"] .drop-zone {
  background:
    linear-gradient(135deg, rgba(255, 212, 0, 0.18), transparent 54%),
    rgba(255, 255, 255, 0.72);
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--accent);
  background: rgba(255, 212, 0, 0.16);
  box-shadow:
    inset 0 0 0 1px rgba(255, 212, 0, 0.22),
    0 18px 48px rgba(255, 212, 0, 0.12);
  transform: translateY(-2px);
}

:root[data-theme="light"] .drop-zone:hover,
:root[data-theme="light"] .drop-zone.is-dragging {
  background: rgba(255, 212, 0, 0.2);
}

.drop-zone.is-dragging .drop-symbol {
  transform: rotate(45deg) scale(1.05);
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.drop-symbol {
  width: 62px;
  height: 62px;
  margin-bottom: 14px;
  border-radius: 18px;
  background:
    linear-gradient(90deg, transparent 42%, var(--accent) 42% 58%, transparent 58%),
    linear-gradient(0deg, transparent 42%, var(--text) 42% 58%, transparent 58%),
    #171717;
  border: 1px solid rgba(255, 212, 0, 0.34);
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.drop-zone strong,
.drop-zone span:last-child,
.drop-zone small {
  display: block;
}

.drop-zone strong {
  margin-bottom: 6px;
  font-size: 1rem;
}

.drop-zone span:last-child,
.drop-zone small {
  color: var(--muted);
}

.drop-zone small {
  min-height: 1.2em;
  margin-top: 10px;
}

.retention-note {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: center;
}

.retention-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid rgba(255, 212, 0, 0.3);
  border-radius: 50%;
  background: rgba(255, 212, 0, 0.1);
  color: var(--accent);
  font-size: 0.78rem;
  flex: 0 0 auto;
}

.progress-panel,
.mapping-panel,
.done-panel {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
}

:root[data-theme="light"] .progress-panel,
:root[data-theme="light"] .mapping-panel,
:root[data-theme="light"] .done-panel,
:root[data-theme="light"] .filament-row,
:root[data-theme="light"] .info-card,
:root[data-theme="light"] .contact-card {
  background: rgba(5, 5, 5, 0.045);
}

.progress-row {
  align-items: center;
  margin-bottom: 10px;
  color: var(--muted);
}

.progress-row strong {
  color: var(--accent);
}

.progress-track {
  height: 12px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.progress-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent), #fff2a8);
  transition: width 180ms ease;
}

.filament-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.filament-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  gap: 12px;
  align-items: center;
  min-height: 70px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
}

.color-dot {
  width: 34px;
  height: 34px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
}

.filament-title {
  margin: 0;
  font-weight: 900;
}

.filament-meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.filament-row input[type="color"] {
  width: 58px;
  height: 44px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.filament-row select {
  min-width: 120px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #202020;
  color: var(--text);
}

:root[data-theme="light"] .filament-row input[type="color"],
:root[data-theme="light"] .filament-row select {
  background: #fffdf5;
  color: var(--text);
}

.message {
  min-height: 1.4em;
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.message.is-error {
  color: var(--danger);
}

.file-mode-note {
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1px solid rgba(255, 212, 0, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 212, 0, 0.09);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

:root[data-theme="light"] .file-mode-note {
  background: rgba(201, 151, 0, 0.1);
}

.action-row {
  align-items: stretch;
  margin-top: 14px;
}

.primary-button,
.download-button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  background: linear-gradient(135deg, var(--accent), #fff0a0);
  color: var(--button-text);
  text-align: center;
  box-shadow: 0 12px 34px rgba(255, 212, 0, 0.22);
}

.primary-button:not(:disabled):hover,
.download-button:hover {
  box-shadow:
    0 16px 42px rgba(255, 212, 0, 0.26),
    inset 0 0 0 1px rgba(255, 255, 255, 0.34);
  transform: translateY(-1px);
}

.primary-button:not(:disabled):active,
.secondary-button:active,
.download-button:active,
.nav-button:active,
.lang-button:active,
.modal-tab:active,
.icon-button:active,
.contact-link:active {
  transform: translateY(1px) scale(0.99);
}

.primary-button:disabled {
  background: rgba(255, 255, 255, 0.1);
  color: var(--muted);
  box-shadow: none;
}

:root[data-theme="light"] .primary-button:disabled {
  background: rgba(5, 5, 5, 0.08);
  color: var(--muted);
}

.secondary-button {
  min-width: 108px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.done-panel p {
  color: var(--muted);
  overflow-wrap: anywhere;
}

.download-button {
  margin-top: 12px;
}

.site-footer {
  display: flex;
  justify-content: center;
  padding: 6px 0 0;
  color: color-mix(in srgb, var(--muted) 82%, transparent);
  font-size: 0.86rem;
  line-height: 1.4;
  text-align: center;
}

.info-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: clamp(14px, 4vw, 44px);
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(14px);
  opacity: 0;
  transition: opacity 180ms ease;
}

.info-modal.is-open {
  opacity: 1;
}

.modal-panel {
  width: min(920px, 100%);
  max-height: min(780px, 92vh);
  overflow: auto;
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 212, 0, 0.08), transparent 42%),
    var(--surface-strong);
  box-shadow: var(--shadow);
  transform: translateY(12px) scale(0.98);
  transition: transform 180ms ease;
}

:root[data-theme="light"] .modal-panel {
  background:
    linear-gradient(145deg, rgba(255, 212, 0, 0.12), transparent 42%),
    var(--surface-strong);
}

.info-modal.is-open .modal-panel {
  transform: translateY(0) scale(1);
}

.modal-header,
.modal-tabs {
  display: flex;
  align-items: center;
}

.modal-header {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.icon-button {
  width: 44px;
  min-width: 44px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 1.4rem;
  line-height: 1;
}

.icon-button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 212, 0, 0.12);
  color: var(--accent);
}

.modal-tabs {
  gap: 8px;
  padding: 4px;
  margin-bottom: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.modal-tab {
  flex: 1;
  padding: 0 14px;
  background: transparent;
  color: var(--muted);
}

.modal-tab.is-active {
  background: var(--accent);
  color: var(--bg);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.info-card,
.contact-card {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
}

.info-card h3,
.contact-card h3 {
  margin-bottom: 8px;
}

.info-card p,
.contact-card p,
.step-list {
  color: var(--muted);
  line-height: 1.55;
}

.wide-card {
  margin-top: 12px;
}

.step-list {
  margin: 0;
  padding-inline-start: 1.25rem;
}

.step-list li + li {
  margin-top: 8px;
}

.contact-card {
  text-align: center;
}

.contact-card p {
  max-width: 620px;
  margin-inline: auto;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 8px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(255, 212, 0, 0.1);
  color: var(--accent);
  font-weight: 900;
}

:root[data-theme="light"] .contact-link {
  background: rgba(255, 212, 0, 0.16);
}

[dir="rtl"] body {
  font-family: "Segoe UI", Tahoma, Arial, system-ui, sans-serif;
}

[dir="rtl"] h1 {
  line-height: 1.06;
}

@media (max-width: 1040px) {
  h1 {
    font-size: clamp(2.35rem, 8vw, 3.5rem);
  }
}

@media (max-width: 720px) {
  .site-shell {
    padding-inline: 10px;
  }

  .topbar {
    grid-template-columns: 1fr auto;
  }

  .header-controls {
    grid-column: 2;
    grid-row: 1;
  }

  .nav-actions {
    grid-column: 1 / -1;
    grid-row: 2;
    order: 3;
  }

  .nav-button {
    flex: 1;
  }

  .hero {
    min-height: auto;
  }

  .hero-badge {
    width: 100%;
    min-height: 42px;
    padding-inline: 14px;
    font-size: 0.84rem;
  }

  h1 {
    font-size: clamp(2.2rem, 10vw, 2.75rem);
  }

  .filament-row {
    grid-template-columns: 1fr;
  }

  .action-row {
    flex-direction: column;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .modal-panel {
    max-height: 88vh;
  }

  .contact-link {
    width: 100%;
  }
}