/* ===== RolyPeraWeb Design System — PDF to Images ===== */

@import url('https://fonts.googleapis.com/css2?family=Geist+Mono:wght@300;400;500;600&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ---- Reset & Custom Properties ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #08090A;
  --hero-bg: #1F2228;
  --surface: #0F1011;
  --surface-2: #191A1B;
  --surface-3: #28282C;
  --text: #F7F8F8;
  --text-2: #D0D6E0;
  --muted: #8A8F98;
  --primary: #5E6AD2;
  --accent: #7170FF;
  --accent-hover: #828FFF;
  --cyan: #38D5FF;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --focus: #3B82F6;
  --border-subtle: rgba(255,255,255,.06);
  --border: rgba(255,255,255,.10);
  --border-strong: rgba(255,255,255,.18);
  --glow-accent: rgba(113,112,255,.10);
  --glow-cyan: rgba(56,213,255,.06);
  --surface-tint: rgba(255,255,255,.035);
  --surface-tint-2: rgba(255,255,255,.018);
  --max: 900px;
  --radius-card: 12px;
  --radius-ui: 6px;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-code: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --transition: .18s ease;
}

body[data-theme="day"] {
  --bg: #F6F8FB;
  --hero-bg: #E7ECF5;
  --surface: #FFFFFF;
  --surface-2: #EEF2F8;
  --surface-3: #DCE3EE;
  --text: #172033;
  --text-2: #38445A;
  --muted: #677288;
  --primary: #4F46E5;
  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --cyan: #0E7490;
  --success: #047857;
  --warning: #B45309;
  --error: #B91C1C;
  --focus: #2563EB;
  --border-subtle: rgba(23,32,51,.08);
  --border: rgba(23,32,51,.14);
  --border-strong: rgba(23,32,51,.24);
  --glow-accent: rgba(37,99,235,.11);
  --glow-cyan: rgba(14,116,144,.08);
  --surface-tint: rgba(255,255,255,.78);
  --surface-tint-2: rgba(255,255,255,.54);
}

/* ---- Base ---- */
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 70% 5%, var(--glow-accent), transparent 26rem),
    radial-gradient(circle at 18% 20%, var(--glow-cyan), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-feature-settings: "cv01", "ss03";
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }

/* ---- Layout ---- */
.site-wrapper {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 22px;
}

/* ---- Hero / Intro ---- */
.intro {
  position: relative;
  padding: 52px 0 40px;
  text-align: center;
}

.intro-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

@media (max-width: 480px) {
  .intro-top { justify-content: center; }
}

.intro-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.intro-eyebrow::before {
  content: "/";
  color: var(--cyan);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  color: var(--text-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
  z-index: 5;
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  color: var(--text);
  transform: translateY(-1px);
}

.theme-toggle-icon {
  color: var(--cyan);
  font-size: 14px;
  line-height: 1;
}

.intro h1 {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: clamp(36px, 5vw, 60px);
  line-height: .96;
  letter-spacing: -.05em;
  font-weight: 300;
  text-wrap: balance;
}

.intro p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.65;
  text-align: justify;
  hyphens: auto;
}

.intro p + p {
  margin-top: 16px;
}

.intro-privacy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding: 8px 14px;
  border: 1px solid rgba(16,185,129,.25);
  border-radius: var(--radius-ui);
  background: rgba(16,185,129,.06);
  color: var(--success);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.intro-privacy::before {
  content: "\2713";
  font-weight: 600;
}

/* ---- Card ---- */
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, var(--surface-tint), var(--surface-tint-2));
  overflow: hidden;
  transition: border-color var(--transition);
}

.card-body {
  padding: 28px;
}

.card-body > * + * {
  margin-top: 22px;
}

/* ---- Dropzone ---- */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 200px;
  padding: 40px 28px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  background: rgba(255,255,255,.015);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  text-align: center;
}

.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--accent);
  background: rgba(113,112,255,.04);
}

.dropzone-icon {
  width: 52px;
  height: 52px;
  border: 1px solid var(--border);
  border-radius: var(--radius-ui);
  background: rgba(255,255,255,.03);
  display: grid;
  place-items: center;
  font-size: 22px;
  color: var(--muted);
}

.dropzone:hover .dropzone-icon {
  border-color: var(--accent);
  color: var(--accent);
}

.dropzone-label {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--text-2);
}

.dropzone-hint {
  font-size: 13px;
  color: var(--muted);
}

.dropzone-input {
  display: none;
}

/* ---- File Info ---- */
.file-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-ui);
  background: rgba(255,255,255,.02);
}

.file-info-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.file-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-ui);
  background: rgba(255,255,255,.03);
  color: var(--accent);
  flex-shrink: 0;
}

.file-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.file-clear {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-ui);
  background: none;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}

.file-clear:hover {
  border-color: var(--border);
  color: var(--error);
}

/* ---- Settings Grid ---- */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

/* ---- Form Elements ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.form-group input,
.form-group select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-ui);
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.form-group input:disabled {
  color: var(--muted);
  opacity: .78;
}

.help-text {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 4px;
}

/* ---- Range Slider ---- */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: var(--surface-3);
  height: 6px;
  border-radius: 3px;
  outline: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: background 0.2s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  transition: background 0.2s;
}

input[type="range"]::-moz-range-thumb:hover {
  background: var(--accent-hover);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-ui);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn:hover:not(:disabled) { transform: translateY(-1px); }

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ---- Progress ---- */
.progress-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
}

.progress-track {
  width: 100%;
  height: 8px;
  background: var(--surface-3);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.3s ease;
}

/* ---- Status ---- */
.status {
  padding: 10px 16px;
  border-radius: var(--radius-ui);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: .035em;
}

.status-error {
  background: rgba(239,68,68,.09);
  border: 1px solid rgba(239,68,68,.28);
  color: var(--error);
}

/* ---- Preview Grid ---- */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.preview-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-ui);
  background: var(--surface-2);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: border-color var(--transition), transform var(--transition);
}

.preview-item:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.preview-item img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.preview-item .btn {
  width: 100%;
}

.preview-filename {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  word-break: break-all;
}

/* ---- Footer ---- */
.tool-footer {
  margin-top: 80px;
  padding: 28px 0;
  border-top: 1px solid var(--border-subtle);
}

.tool-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  text-align: center;
}

.tool-footer p {
  color: var(--muted);
  font-size: 14px;
}

.tool-footer a {
  color: var(--text-2);
  transition: color var(--transition);
}

.tool-footer a:hover {
  color: var(--text);
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .site-wrapper { padding: 0 16px; }
  .intro { padding: 32px 0 28px; }
  .intro h1 { font-size: clamp(28px, 8vw, 40px); }
  .theme-toggle { right: 16px; }
  .card-body { padding: 20px; }
  .dropzone { min-height: 160px; padding: 28px 20px; }
  .settings-grid { grid-template-columns: 1fr; }
  .preview-grid { grid-template-columns: 1fr; }
  .tool-footer-inner { flex-direction: column; text-align: center; }
  .file-info { flex-direction: column; align-items: flex-start; }
  .file-clear { align-self: flex-end; margin-top: -40px; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}