@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg:        #f0f4ff;
  --bg-2:      #e8eeff;
  --surface:   rgba(255, 255, 255, 0.85);
  --surface-2: rgba(255, 255, 255, 0.65);
  --border:    rgba(99, 102, 241, 0.12);
  --border-mid: rgba(99, 102, 241, 0.22);
  --border-bright: rgba(99, 102, 241, 0.35);

  --text-1: #1e1b4b;
  --text-2: #4338ca;
  --text-3: #7c87a8;

  /* Vivid accent palette */
  --violet:  #7c3aed;
  --indigo:  #4f46e5;
  --blue:    #2563eb;
  --cyan:    #0891b2;
  --emerald: #059669;
  --pink:    #db2777;
  --orange:  #ea580c;
  --yellow:  #d97706;

  /* Gradients */
  --grad-hero:    linear-gradient(135deg, #7c3aed 0%, #4f46e5 45%, #0891b2 100%);
  --grad-btn:     linear-gradient(135deg, #059669 0%, #0891b2 55%, #4f46e5 100%);
  --grad-soft:    linear-gradient(135deg, rgba(124,58,237,0.07) 0%, rgba(8,145,178,0.05) 100%);
  --grad-card:    linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(240,244,255,0.8) 100%);

  --shadow-card:  0 8px 40px rgba(99,102,241,0.1), 0 2px 8px rgba(99,102,241,0.06);
  --shadow-btn:   0 8px 28px rgba(5,150,105,0.35), 0 2px 8px rgba(8,145,178,0.2);
  --shadow-glow:  0 0 60px rgba(124,58,237,0.1), 0 0 120px rgba(8,145,178,0.06);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text-1);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── LIGHT MESH BACKGROUND ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 15% 10%,  rgba(124,58,237,0.1)  0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 85% 85%,  rgba(8,145,178,0.1)   0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 55% 45%,  rgba(79,70,229,0.07)  0%, transparent 55%),
    radial-gradient(ellipse 40% 50% at 10% 75%,  rgba(219,39,119,0.06) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

/* Soft grid */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
}

/* Animated orbs */
.orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 9s ease-in-out infinite alternate;
}
.orb-1 { width: 480px; height: 480px; background: rgba(124,58,237,0.12); top: -180px; left: -160px; animation-delay: 0s; }
.orb-2 { width: 380px; height: 380px; background: rgba(8,145,178,0.1);   bottom: -120px; right: -120px; animation-delay: -3s; }
.orb-3 { width: 280px; height: 280px; background: rgba(219,39,119,0.07); top: 35%; left: 55%; animation-delay: -6s; }

@keyframes orbFloat {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(24px,-30px) scale(1.08); }
}

/* ── LAYOUT ── */
.app-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── HEADER ── */
.app-header {
  text-align: center;
  padding: 2.5rem 0 2rem;
}

.header-badges {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 50px;
  border: 1px solid var(--border-mid);
  text-decoration: none;
  transition: all 0.2s ease;
}

.badge i {
  width: 14px;
  height: 14px;
}

.badge-watermark {
  background: rgba(99, 102, 241, 0.1);
  color: var(--indigo);
  border-color: rgba(99, 102, 241, 0.25);
}
.badge-watermark:hover {
  background: rgba(99, 102, 241, 0.2);
  transform: translateY(-1px);
}

.badge-pdf-snap {
  background: linear-gradient(135deg, #059669 0%, #0891b2 100%);
  color: #fff;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.18), 0 4px 16px rgba(8, 145, 178, 0.35);
}
.badge-pdf-snap:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px rgba(8, 145, 178, 0.25), 0 6px 20px rgba(8, 145, 178, 0.45);
  color: #fff;
}

.badge-secure {
  background: rgba(5, 150, 105, 0.08);
  color: var(--emerald);
  border-color: rgba(5, 150, 105, 0.2);
}

.badge-visitors {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border-color: transparent;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.45rem 1rem;
  gap: 0.5rem;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.18), 0 4px 16px rgba(99, 102, 241, 0.35);
  position: relative;
  overflow: visible;
  letter-spacing: 0.01em;
}

.badge-visitors::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  z-index: -1;
  opacity: 0.35;
  animation: visitor-pulse 2.5s ease-in-out infinite;
}

@keyframes visitor-pulse {
  0%, 100% { transform: scale(1); opacity: 0.35; }
  50%       { transform: scale(1.06); opacity: 0.18; }
}

.badge-visitors i {
  width: 16px;
  height: 16px;
  color: #fff;
  opacity: 0.9;
}

.visitor-badge-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: rgba(255,255,255,0.88);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.visitor-count-number {
  font-size: 0.95rem;
  font-weight: 800;
  color: #fff;
  background: rgba(0, 0, 0, 0.22);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  margin-left: 0.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1rem;
}

.logo-icon {
  width: 2.75rem;
  height: 2.75rem;
  padding: 8px;
  background: var(--grad-hero);
  border-radius: 14px;
  color: #fff;
  box-shadow: 0 8px 24px rgba(124,58,237,0.35);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.logo:hover .logo-icon {
  transform: rotate(-8deg) scale(1.1);
  box-shadow: 0 12px 32px rgba(124,58,237,0.5);
}

.logo h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo h1 span {
  background: linear-gradient(135deg, #0891b2, #4f46e5);
  -webkit-background-clip: text;
  background-clip: text;
}

.subtitle {
  color: #5b6990;
  font-size: clamp(0.9rem, 2vw, 1rem);
  max-width: 510px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── MAIN CARD ── */
.app-card {
  background: var(--surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  padding: 2.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad-hero);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.app-card::after {
  content: '';
  position: absolute;
  top: -50px; right: -50px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(124,58,237,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ── HIDDEN ── */
.hidden { display: none !important; }

/* ── UPLOAD SECTION ── */
.upload-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 380px;
}

.drop-zone {
  width: 100%;
  max-width: 680px;
  min-height: 300px;
  border: 2px dashed rgba(124,58,237,0.28);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(124,58,237,0.04), rgba(8,145,178,0.03));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--violet);
  background: rgba(124,58,237,0.06);
  box-shadow: 0 0 0 5px rgba(124,58,237,0.08), 0 16px 48px rgba(124,58,237,0.12);
  transform: translateY(-4px);
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.drop-zone-content {
  text-align: center;
  padding: 3rem 2rem;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Icon ring */
.icon-ring {
  position: relative;
  width: 100px;
  height: 100px;
  margin-bottom: 2rem;
}
.icon-ring::before, .icon-ring::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  animation: ringPulse 3s ease-in-out infinite;
}
.icon-ring::before {
  inset: -10px;
  border: 1.5px solid rgba(124,58,237,0.2);
}
.icon-ring::after {
  inset: -22px;
  border: 1px solid rgba(124,58,237,0.1);
  animation-delay: 0.5s;
}
@keyframes ringPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(1.06); }
}

.icon-wrapper {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(8,145,178,0.08));
  border: 1.5px solid rgba(124,58,237,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s var(--ease);
  box-shadow: 0 8px 24px rgba(124,58,237,0.12);
}
.drop-zone:hover .icon-wrapper {
  background: linear-gradient(135deg, rgba(124,58,237,0.18), rgba(8,145,178,0.12));
  transform: scale(1.08) rotate(-6deg);
  box-shadow: 0 16px 40px rgba(124,58,237,0.25);
}

.upload-icon { width: 40px; height: 40px; color: var(--violet); }

.drop-zone-content h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 0.5rem;
}

.file-type-hint {
  color: #7c87a8;
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

.upload-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 4px 11px;
  border-radius: 6px;
}
.tag-violet { background: rgba(124,58,237,0.1);  color: #7c3aed; border: 1px solid rgba(124,58,237,0.2); }
.tag-cyan   { background: rgba(8,145,178,0.1);   color: #0891b2; border: 1px solid rgba(8,145,178,0.2); }
.tag-pink   { background: rgba(219,39,119,0.09); color: #db2777; border: 1px solid rgba(219,39,119,0.18); }

.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: #7c87a8;
  background: rgba(5,150,105,0.06);
  border: 1px solid rgba(5,150,105,0.15);
  padding: 7px 14px;
  border-radius: 100px;
}
.security-badge i { width: 13px; height: 13px; color: var(--emerald); }

/* ── WORKSPACE ── */
.workspace-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 2rem;
  align-items: start;
}

/* ── LEFT PANEL ── */
.panel-left { display: flex; flex-direction: column; gap: 1rem; }

.card-inner {
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 12px rgba(99,102,241,0.05);
}
.card-inner:hover {
  border-color: var(--border-bright);
  box-shadow: 0 4px 20px rgba(99,102,241,0.1);
}

/* Colored left accent stripe */
.file-info-card { border-left: 3px solid var(--violet); }
.controls-card  { border-left: 3px solid var(--cyan); }
.features-card  { border-left: 3px solid var(--pink); }

/* ── FILE INFO ── */
.file-info-card { display: flex; flex-direction: column; gap: 0.875rem; }

.file-details { display: flex; align-items: center; gap: 0.75rem; }

.file-icon-wrap {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(79,70,229,0.08));
  border: 1px solid rgba(124,58,237,0.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.detail-file-icon { width: 20px; height: 20px; color: var(--violet); }

.file-meta { flex: 1; min-width: 0; }
.file-name {
  font-size: 0.9rem; font-weight: 700;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  color: var(--text-1); margin-bottom: 2px;
}
.file-size { font-size: 0.75rem; color: var(--text-3); font-weight: 500; }

.btn-icon-danger {
  background: transparent;
  border: 1px solid transparent;
  color: #9ca3af;
  cursor: pointer;
  padding: 7px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s var(--ease);
  flex-shrink: 0;
}
.btn-icon-danger i { width: 16px; height: 16px; }
.btn-icon-danger:hover {
  background: rgba(239,68,68,0.08);
  border-color: rgba(239,68,68,0.2);
  color: #ef4444;
}

.page-count-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem; font-weight: 600;
  background: linear-gradient(135deg, rgba(124,58,237,0.08), rgba(8,145,178,0.06));
  border: 1px solid rgba(124,58,237,0.15);
  color: var(--violet);
  padding: 6px 12px;
  border-radius: 8px;
  width: fit-content;
}
.page-count-badge i { width: 14px; height: 14px; }

/* ── CONTROLS ── */
.controls-card { display: flex; flex-direction: column; gap: 1.125rem; }

.control-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  background: linear-gradient(90deg, #0891b2, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-selector-wrapper {
  display: flex; align-items: center; gap: 0.5rem;
  background: rgba(99,102,241,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px;
}

.btn-step {
  background: rgba(99,102,241,0.06);
  border: 1px solid rgba(99,102,241,0.1);
  color: var(--indigo);
  width: 40px; height: 40px;
  border-radius: 10px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s var(--ease);
  flex-shrink: 0;
}
.btn-step i { width: 18px; height: 18px; }
.btn-step:hover:not(:disabled) {
  background: rgba(124,58,237,0.12);
  border-color: rgba(124,58,237,0.3);
  color: var(--violet);
  box-shadow: 0 2px 8px rgba(124,58,237,0.15);
}
.btn-step:disabled { opacity: 0.3; cursor: not-allowed; }

.input-container {
  display: flex; align-items: center; justify-content: center;
  gap: 0.4rem; flex: 1;
}

.page-input {
  background: transparent; border: none;
  color: var(--text-1);
  font-size: 1.75rem; font-weight: 800;
  width: 70px; text-align: center;
  font-family: 'Outfit', sans-serif;
  outline: none;
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
  appearance: textfield;
}
.page-input::-webkit-outer-spin-button,
.page-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.max-page-indicator { color: var(--text-3); font-size: 1rem; font-weight: 500; }

/* Slider */
.range-slider-container { padding: 0 2px; }

.page-slider {
  -webkit-appearance: none;
  width: 100%; height: 6px;
  border-radius: 10px;
  background: rgba(99,102,241,0.12);
  outline: none; cursor: pointer;
}
.page-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7c3aed, #0891b2);
  border: 2.5px solid #fff;
  box-shadow: 0 2px 10px rgba(124,58,237,0.4);
  cursor: pointer;
  transition: transform 0.2s var(--ease);
}
.page-slider::-webkit-slider-thumb:hover { transform: scale(1.25); }

/* Download button */
.action-buttons { margin-top: 0.25rem; }

.btn-primary {
  background: var(--grad-btn);
  color: #fff;
  border: none;
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 0.92rem; font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 0.75rem;
  transition: all 0.3s var(--ease);
  box-shadow: var(--shadow-btn);
  font-family: 'Plus Jakarta Sans', sans-serif;
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(5,150,105,0.4), 0 4px 12px rgba(8,145,178,0.25);
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-primary i { width: 20px; height: 20px; }

/* Settings card */
.features-card h5 {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  background: linear-gradient(90deg, #db2777, #ea580c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 1rem;
}
.features-card h5 i { width: 14px; height: 14px; color: #ea580c; }

.settings-row {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.setting-label { font-size: 0.8rem; color: #5b6990; font-weight: 500; }

.settings-select {
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--border-mid);
  color: var(--text-1);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.8rem; font-weight: 500;
  outline: none; cursor: pointer;
  transition: border 0.2s, box-shadow 0.2s;
  font-family: 'Plus Jakarta Sans', sans-serif;
}
.settings-select:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.1);
}

/* ── RIGHT PANEL ── */
.panel-right { display: flex; flex-direction: column; gap: 0.875rem; }

.preview-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 0.25rem;
}

.preview-title {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.8px;
  background: linear-gradient(90deg, #7c3aed, #0891b2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex; align-items: center; gap: 0.5rem;
}
.preview-title i { width: 15px; height: 15px; color: var(--violet); }

.preview-resolution {
  font-size: 0.75rem; color: var(--text-3); font-weight: 600;
  background: rgba(99,102,241,0.06);
  border: 1px solid var(--border);
  padding: 3px 10px; border-radius: 6px;
}

.preview-container {
  background: #d1d8f0;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-xl);
  min-height: 520px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: 2rem;
  transition: border-color 0.3s, box-shadow 0.3s;
  box-shadow: inset 0 4px 16px rgba(80,90,140,0.15);
}
.preview-container:hover {
  border-color: var(--border-bright);
  box-shadow: 0 4px 24px rgba(99,102,241,0.12), inset 0 4px 16px rgba(80,90,140,0.15);
}

/* Corner brackets */
.preview-container::before, .preview-container::after {
  content: '';
  position: absolute;
  width: 50px; height: 50px;
  pointer-events: none;
}
.preview-container::before {
  top: 14px; left: 14px;
  border-top: 2px solid rgba(124,58,237,0.3);
  border-left: 2px solid rgba(124,58,237,0.3);
  border-radius: 4px 0 0 0;
}
.preview-container::after {
  bottom: 14px; right: 14px;
  border-bottom: 2px solid rgba(8,145,178,0.3);
  border-right: 2px solid rgba(8,145,178,0.3);
  border-radius: 0 0 4px 0;
}

/* Spinner overlay */
.preview-spinner {
  position: absolute; inset: 0;
  background: rgba(240,244,255,0.88);
  backdrop-filter: blur(6px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1.25rem; z-index: 10;
}

.spinner-ring {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 3px solid rgba(124,58,237,0.12);
  border-top-color: var(--violet);
  border-right-color: var(--cyan);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Button spinner */
.spinner {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

.preview-spinner p { color: #5b6990; font-size: 0.875rem; font-weight: 600; }

.preview-wrapper {
  max-width: 100%; max-height: 460px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.15), 0 0 0 1px rgba(255,255,255,0.8);
  border-radius: 8px; overflow: visible;
  display: flex; align-items: center; justify-content: center;
  transition: box-shadow 0.3s;
}
.preview-wrapper canvas {
  display: block;
  max-width: 100%;
  max-height: 460px;
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.08);
}
.preview-wrapper:hover {
  box-shadow: 0 16px 56px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.15), 0 0 0 2px rgba(124,58,237,0.3);
}

#previewCanvas {
  max-width: 100%; max-height: 460px;
  object-fit: contain; display: block;
  background: #ffffff;
}

/* Empty state */
.preview-empty {
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
  padding: 2rem; text-align: center;
}
.preview-empty-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(99,102,241,0.06);
  border: 1px solid rgba(99,102,241,0.12);
  display: flex; align-items: center; justify-content: center;
}
.preview-empty-icon i { width: 28px; height: 28px; color: #b0b8d4; }
.preview-empty p { color: #9ca8c4; font-size: 0.85rem; font-weight: 500; }

/* ── TOASTS ── */
.toast-container {
  position: fixed; bottom: 2rem; right: 2rem;
  display: flex; flex-direction: column; gap: 0.75rem; z-index: 1000;
}

.toast {
  display: flex; align-items: center; gap: 0.875rem;
  background: rgba(255,255,255,0.95);
  border: 1px solid rgba(99,102,241,0.12);
  border-left: 3px solid var(--violet);
  color: var(--text-1);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem; font-weight: 600;
  box-shadow: 0 12px 40px rgba(99,102,241,0.15), 0 2px 8px rgba(0,0,0,0.06);
  transform: translateX(110%);
  animation: toastIn 0.35s cubic-bezier(0.16,1,0.3,1) forwards;
  min-width: 260px; max-width: 360px;
  backdrop-filter: blur(12px);
}
.toast i { width: 18px; height: 18px; flex-shrink: 0; }
.toast.success { border-left-color: var(--emerald); }
.toast.success i { color: var(--emerald); }
.toast.danger  { border-left-color: #ef4444; }
.toast.danger i { color: #ef4444; }
.toast.info i  { color: var(--violet); }
.toast.fade-out { animation: toastOut 0.3s cubic-bezier(0.16,1,0.3,1) forwards; }

@keyframes toastIn  { to { transform: translateX(0); } }
@keyframes toastOut { from { transform: translateX(0); opacity: 1; } to { transform: translateX(110%); opacity: 0; } }

/* ── FOOTER ── */
.app-footer {
  text-align: center;
  padding: 1.5rem 0 0.5rem;
}
.app-footer p { color: #9ca8c4; font-size: 0.78rem; margin-bottom: 0.75rem; }
.app-footer span { color: var(--violet); font-weight: 600; }

.footer-nav {
  display: flex; align-items: center; justify-content: center;
  gap: 1.5rem; flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.75rem; color: var(--text-3);
  text-decoration: none; font-weight: 500;
  transition: color 0.2s;
}
.footer-nav a:hover { color: var(--violet); }

/* ── SEO / AEO / GEO CONTENT SECTION ── */
.seo-content {
  position: relative; z-index: 1;
  margin-top: 3rem;
  padding: 0 0.25rem;
}

/* Feature cards grid */
.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.seo-card {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
  transition: box-shadow 0.2s, border-color 0.2s;
}
.seo-card:hover {
  border-color: var(--border-bright);
  box-shadow: 0 4px 20px rgba(99,102,241,0.1);
}

.seo-card-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(8,145,178,0.08));
  border: 1px solid rgba(124,58,237,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.seo-card-icon i { width: 20px; height: 20px; color: var(--violet); }

.seo-card h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem; font-weight: 700;
  color: var(--text-1);
  margin-bottom: 0.5rem;
}
.seo-card p {
  font-size: 0.85rem; color: #5b6990; line-height: 1.65;
}
.seo-card p strong { color: var(--text-1); font-weight: 600; }

/* How-To block */
.seo-howto {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(12px);
  margin-bottom: 1.25rem;
}
.seo-howto h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem; font-weight: 700;
  color: var(--text-1);
  margin-bottom: 1.25rem;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.howto-steps {
  list-style: none;
  padding: 0;
  counter-reset: steps;
  display: flex; flex-direction: column; gap: 0.875rem;
}
.howto-steps li {
  counter-increment: steps;
  display: flex; align-items: flex-start; gap: 1rem;
  font-size: 0.875rem; color: #5b6990; line-height: 1.6;
}
.howto-steps li::before {
  content: counter(steps);
  display: flex; align-items: center; justify-content: center;
  min-width: 28px; height: 28px;
  background: var(--grad-hero);
  color: #fff; font-weight: 700; font-size: 0.75rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.howto-steps li strong { color: var(--text-1); font-weight: 600; }

/* FAQ block */
.seo-faq {
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(12px);
}
.seo-faq h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem; font-weight: 700;
  color: var(--text-1);
  margin-bottom: 1.25rem;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 0;
}
.faq-item:last-child { border-bottom: none; }

.faq-item summary {
  font-size: 0.9rem; font-weight: 600; color: var(--text-1);
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.2rem; font-weight: 300;
  color: var(--violet); flex-shrink: 0;
  transition: transform 0.25s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--violet); }

.faq-item p {
  font-size: 0.85rem; color: #5b6990; line-height: 1.65;
  padding-top: 0.75rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .workspace-layout { grid-template-columns: 1fr; gap: 1.5rem; }
  .app-card { padding: 1.75rem 1.5rem; }
  .preview-container { min-height: 360px; }
  .seo-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-container { padding: 1rem 1rem 2rem; }
  .app-card { padding: 1.25rem 1rem; border-radius: var(--radius-lg); }
  .logo h1 { font-size: 1.6rem; }
  .drop-zone { min-height: 240px; }
  .drop-zone-content { padding: 2rem 1rem; }
  .icon-ring, .icon-wrapper { width: 80px; height: 80px; }
  .upload-icon { width: 32px; height: 32px; }
  .preview-container { min-height: 300px; padding: 1rem; }
  .toast-container { bottom: 1rem; right: 1rem; left: 1rem; }
  .toast { min-width: unset; max-width: 100%; }
}

.mobile-watermark-btn {
  display: none;
}

@media (max-width: 768px) {
  .mobile-watermark-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #ffffff;
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
    transition: transform 0.2s ease;
    width: 100%;
  }

  .mobile-watermark-btn:active {
    transform: scale(0.98);
  }

  .mobile-snap-btn-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .mobile-watermark-btn i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
  }
}