/* ===== QUICK DO PDF — PREMIUM SHARED STYLES ===== */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --bg: #03040b;
  --surface: rgba(18, 19, 28, 0.65);
  --surface-hover: rgba(28, 30, 42, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(255, 255, 255, 0.15);
  --text: #f8f9fc;
  --muted: #8b92a5;
  --glass-blur: blur(24px);
  --a1: #ff2a5f;
  --a2: #ff6b3d;
  --glow-opacity: 0.15;
}

body.theme-red  { --a1: #ff2a5f; --a2: #ff6b3d; }
body.theme-blue { --a1: #2a8bff; --a2: #8b4dff; }
body.theme-green{ --a1: #00dfa2; --a2: #00b4d8; }
body.theme-gold { --a1: #fbbf24; --a2: #f97316; }
body.theme-purple{--a1: #c026d3; --a2: #db2777; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Dynamic Mesh Background Glow */
body::before {
  content: '';
  position: fixed;
  top: -30%; left: -20%; width: 70%; height: 70%;
  background: radial-gradient(circle, color-mix(in srgb, var(--a1) 25%, transparent) 0%, transparent 60%);
  filter: blur(120px); pointer-events: none; z-index: -1; animation: float1 15s ease-in-out infinite alternate;
}
body::after {
  content: '';
  position: fixed;
  bottom: -30%; right: -20%; width: 70%; height: 70%;
  background: radial-gradient(circle, color-mix(in srgb, var(--a2) 20%, transparent) 0%, transparent 60%);
  filter: blur(120px); pointer-events: none; z-index: -1; animation: float2 18s ease-in-out infinite alternate;
}

@keyframes float1 { 0% { transform: translate(0, 0); } 100% { transform: translate(15%, 15%); } }
@keyframes float2 { 0% { transform: translate(0, 0); } 100% { transform: translate(-15%, -15%); } }

/* HEADER */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 40px;
  background: rgba(3, 4, 11, 0.5);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
}

.back-btn {
  display: inline-flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--text);
  font-size: 14px; font-weight: 500;
  padding: 8px 16px; border-radius: 100px;
  background: var(--surface); border: 1px solid var(--border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.back-btn:hover { background: color-mix(in srgb, var(--text) 10%, transparent); transform: translateX(-3px); }

.logo {
  font-weight: 900; font-size: 22px; letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--a1), var(--a2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; text-decoration: none;
}

/* MAIN */
main {
  position: relative; z-index: 10;
  flex: 1; display: flex; flex-direction: column;
  align-items: center; padding: 120px 24px 80px;
}

.page-title {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800; letter-spacing: -1.5px; line-height: 1.1;
  margin-bottom: 16px; text-align: center;
  animation: slideDown 0.6s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; opacity: 0;
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }

.page-title span {
  background: linear-gradient(135deg, var(--a1), var(--a2), var(--a1));
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: shimmerText 4s linear infinite;
}
@keyframes shimmerText { to { background-position: 200% center; } }

.page-subtitle { 
  color: var(--muted); font-size: 18px; margin-bottom: 56px; text-align: center; font-weight: 400; max-width: 600px;
  animation: slideDown 0.6s 0.1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; opacity: 0;
}

/* UPLOAD ZONE */
.upload-zone {
  width: 100%; max-width: 640px;
  background: var(--surface);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: 32px; padding: 64px 40px;
  text-align: center; 
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.05);
  animation: scaleIn 0.8s 0.2s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; opacity: 0;
}
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

.upload-zone::before {
  content: ''; position: absolute; inset: 0;
  border-radius: inherit; padding: 2px;
  background: linear-gradient(135deg, var(--a1), transparent, var(--a2));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity 0.4s; z-index: 1; pointer-events: none;
}
.upload-zone.over::before, .upload-zone:focus-within::before, .upload-zone:hover::before { opacity: 1; }
.upload-zone.over { transform: scale(1.02); background: color-mix(in srgb, var(--surface) 80%, var(--a1) 5%); }

.upload-icon { 
  font-size: 64px; margin-bottom: 24px; position: relative; z-index: 2;
  filter: drop-shadow(0 10px 20px color-mix(in srgb, var(--a1) 40%, transparent));
  animation: bounceSlow 3s ease-in-out infinite;
}
@keyframes bounceSlow { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.upload-zone h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 2; }
.upload-zone > p { color: var(--muted); font-size: 16px; margin-bottom: 32px; position: relative; z-index: 2; }

.select-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 32px; border-radius: 100px;
  border: none;
  background: linear-gradient(135deg, var(--a1), var(--a2));
  color: white; font-family: 'Outfit', sans-serif;
  font-size: 16px; font-weight: 700; letter-spacing: 0.5px;
  cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; z-index: 2;
  box-shadow: 0 10px 25px color-mix(in srgb, var(--a1) 30%, transparent), inset 0 1px 1px rgba(255,255,255,0.2);
  overflow: hidden;
}
.select-btn::after {
  content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transform: skewX(-20deg); transition: 0.5s;
}
.select-btn:hover { transform: translateY(-3px); box-shadow: 0 15px 35px color-mix(in srgb, var(--a1) 45%, transparent); }
.select-btn:hover::after { left: 150%; }

.select-btn input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }

/* FILE LIST */
#fileList, #fileInfo, #previewGrid { margin-top: 32px; width: 100%; max-width: 640px; }

.file-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px; background: rgba(20, 21, 30, 0.6);
  backdrop-filter: var(--glass-blur); border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 15px; margin-bottom: 12px;
  animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; opacity: 0;
  transition: all 0.2s;
}
.file-item:hover { border-color: var(--border-glow); transform: translateX(5px); background: rgba(30, 32, 45, 0.6); }
@keyframes popIn { from { opacity: 0; transform: scale(0.9) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.fi { font-size: 24px; flex-shrink: 0; filter: drop-shadow(0 2px 5px rgba(0,0,0,0.5)); }
.fn { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; font-size: 16px; }
.fs { color: var(--muted); font-size: 13px; flex-shrink: 0; background: rgba(0,0,0,0.3); padding: 4px 8px; border-radius: 6px; }
.fm { color: var(--muted); font-size: 13px; text-align: right; flex-shrink: 0; }
.fc { color: var(--a1); font-size: 13px; flex-shrink: 0; font-weight: 600; }

/* ACTION BUTTON */
.action-btn {
  margin-top: 40px; padding: 18px 56px; border-radius: 100px; border: none;
  background: white; color: black; font-family: 'Outfit', sans-serif; font-size: 18px; font-weight: 800;
  cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex; align-items: center; justify-content: center; gap: 12px; width: 100%; max-width: 640px;
  box-shadow: 0 15px 35px rgba(255,255,255,0.15); position: relative; overflow: hidden;
}
.action-btn::before {
  content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--a1), var(--a2));
  opacity: 0; transition: opacity 0.3s; z-index: 1;
}
.action-btn span { position: relative; z-index: 2; transition: color 0.3s; }
.action-btn:hover { transform: translateY(-4px); box-shadow: 0 20px 40px color-mix(in srgb, var(--a1) 30%, transparent); }
.action-btn:hover::before { opacity: 1; }
.action-btn:hover span { color: white; }
.action-btn.hidden { display: none !important; }

/* EXTRA CARD (options / settings) */
.option-card {
  margin-top: 32px; width: 100%; max-width: 640px;
  background: var(--surface); border: 1px solid var(--border);
  backdrop-filter: var(--glass-blur); border-radius: 24px; padding: 32px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.option-card h4 { font-size: 14px; font-weight: 700; margin-bottom: 20px; color: var(--text); text-transform: uppercase; letter-spacing: 1px; display: flex; align-items: center; gap: 10px; }
.option-card h4::before { content: ''; display: inline-block; width: 8px; height: 8px; background: var(--a1); border-radius: 50%; box-shadow: 0 0 10px var(--a1); }
.option-grid { display: grid; gap: 12px; }
.option-grid.cols3 { grid-template-columns: repeat(3, 1fr); }
.option-grid.cols2 { grid-template-columns: repeat(2, 1fr); }

.opt-btn {
  padding: 16px 12px; border-radius: 16px; border: 1px solid var(--border);
  background: rgba(0,0,0,0.2); color: var(--muted); cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); text-align: center; font-family: 'Outfit', sans-serif;
  position: relative; overflow: hidden;
}
.opt-btn::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--a1), var(--a2)); opacity: 0; transition: opacity 0.3s; z-index: 0; }
.opt-btn > * { position: relative; z-index: 1; }
.opt-btn .oi { font-size: 28px; margin-bottom: 8px; transition: transform 0.3s; }
.opt-btn .on { font-size: 15px; font-weight: 700; color: var(--text); display: block; margin-bottom: 4px; }
.opt-btn .od { font-size: 12px; color: var(--muted); line-height: 1.4; display: block; }

.opt-btn:hover { border-color: var(--border-glow); background: rgba(255,255,255,0.03); transform: translateY(-2px); }
.opt-btn:hover .oi { transform: scale(1.1); }
.opt-btn.active { border-color: transparent; box-shadow: 0 10px 20px color-mix(in srgb, var(--a1) 20%, transparent); }
.opt-btn.active::before { opacity: 0.15; }
.opt-btn.active .on { color: var(--a1); }
.opt-btn.active .oi { color: var(--a1); transform: scale(1.1); filter: drop-shadow(0 0 8px color-mix(in srgb, var(--a1) 50%, transparent)); }

/* LOADER */
#loader {
  position: fixed; inset: 0; background: rgba(3, 4, 11, 0.85);
  display: none; flex-direction: column; align-items: center; justify-content: center;
  z-index: 9999; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
#loader.active { display: flex; animation: fadeIn 0.3s ease forwards; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.loader-ring {
  width: 80px; height: 80px;
  border: 4px solid var(--border); border-top-color: var(--a1); border-right-color: var(--a2);
  border-radius: 50%; animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite; margin-bottom: 32px;
  box-shadow: 0 0 30px color-mix(in srgb, var(--a1) 30%, transparent);
}
.loader-text { font-size: 24px; font-weight: 700; margin-bottom: 8px; background: linear-gradient(135deg, #fff, var(--muted)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.loader-sub { color: var(--muted); font-size: 15px; }

/* SUCCESS */
.success-msg {
  display: flex; flex-direction: column; align-items: center;
  margin-top: 40px; padding: 40px;
  background: rgba(16, 185, 129, 0.05); border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 24px; max-width: 640px; width: 100%; text-align: center;
  backdrop-filter: var(--glass-blur); box-shadow: 0 20px 40px rgba(0,0,0,0.2), inset 0 0 30px rgba(16,185,129,0.05);
  animation: slideUp 0.5s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; opacity: 0;
}
.success-msg.hidden { display: none !important; }
.s-icon { font-size: 48px; margin-bottom: 16px; filter: drop-shadow(0 0 15px rgba(16,185,129,0.4)); animation: scaleIn 0.5s 0.2s backwards cubic-bezier(0.34, 1.56, 0.64, 1); }
.success-msg h3 { font-size: 24px; font-weight: 700; color: #34d399; margin-bottom: 8px; }
.success-msg p { color: var(--text); font-size: 16px; }

/* SIZE COMPARISON */
.compare-card {
  margin-top: 32px; width: 100%; max-width: 640px;
  background: rgba(16, 185, 129, 0.05); border: 1px solid rgba(16, 185, 129, 0.2);
  backdrop-filter: var(--glass-blur); border-radius: 24px; padding: 32px; text-align: center;
  animation: slideUp 0.5s 0.1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; opacity: 0;
}
.compare-card.hidden { display: none !important; }
.compare-row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 24px; }
.sz-box { background: rgba(0,0,0,0.2); padding: 20px; border-radius: 16px; border: 1px solid var(--border); }
.sz-box h5 { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 8px; }
.sz-val { font-size: 28px; font-weight: 800; }
.sz-val.after { color: #34d399; text-shadow: 0 0 20px rgba(16,185,129,0.3); }
.compare-row .arrow { font-size: 28px; color: #34d399; animation: pulse 2s infinite; }
.saving { margin-top: 24px; font-size: 16px; font-weight: 700; color: #34d399; display: inline-block; padding: 8px 16px; background: rgba(16,185,129,0.1); border-radius: 100px; border: 1px solid rgba(16,185,129,0.2); }

@media(max-width: 600px) {
  header { padding: 16px 20px; }
  main { padding: 100px 16px 60px; }
  .option-grid.cols3 { grid-template-columns: repeat(1, 1fr); }
  .option-grid.cols2 { grid-template-columns: repeat(1, 1fr); }
  .page-title { font-size: 32px; }
}