@import url("https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@300;400;600&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Merriweather:wght@300;600&display=swap");

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

:root {
  --ink: #1a1a1a;
  --paper: #f5f0e8;
  --cream: #ede7d4;
  --accent: #c0392b;
  --green: #2c7a4b;
  --blue: #1a5276;
  --muted: #7a7165;
  --border: #c8bfa8;
  --green-bg: #eaf5ee;
  --yellow-bg: #fef9e7;
  --red-bg: #fdecea;
}

body {
  font-family: "Source Sans Pro", sans-serif;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.modal-open {
  overflow: hidden;
}

/* Privacy Modal Styles */
.privacy-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  backdrop-filter: blur(3px);
}

.privacy-banner {
  background: #fffbe6;
  border: 3px solid #e6a817;
  border-radius: 12px;
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #5a4a1a;
  max-width: 550px;
  width: 90%;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  position: relative;
}

.privacy-banner .pb-icon {
  font-size: 2.2rem;
  flex-shrink: 0;
  text-align: center;
}

.privacy-banner .pb-body {
  flex: 1;
}

.privacy-banner .pb-title {
  font-weight: 600;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #3d2e00;
  margin-bottom: 0.75rem;
  text-align: center;
}

.privacy-banner .pb-content {
  font-size: 0.9rem;
  text-align: left;
}

.privacy-banner a {
  color: #3d2e00;
  text-underline-offset: 2px;
}

.privacy-banner .pb-dismiss {
  background: #e6a817;
  border: none;
  color: #fff;
  font-family: "Source Sans Pro", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.9rem 1.5rem;
  border-radius: 6px;
  cursor: pointer;
  letter-spacing: 0.1em;
  transition: background 0.15s;
  width: 100%;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

.privacy-banner .pb-dismiss:hover {
  background: #c98c0a;
}

/* Main content (initially blurred) */
.main-content {
  filter: blur(4px);
  pointer-events: none;
  user-select: none;
  transition: filter 0.3s ease;
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
}

.main-content.content-enabled {
  filter: blur(0);
  pointer-events: auto;
  user-select: auto;
}

/* Decorative elements */
.bg-decoration {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bg-circle {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(200, 191, 168, 0.1) 0%,
    rgba(200, 191, 168, 0.05) 100%
  );
  top: -150px;
  right: -150px;
}

.bg-circle-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(44, 122, 75, 0.03) 0%,
    rgba(44, 122, 75, 0.01) 100%
  );
  bottom: -200px;
  left: -200px;
}

/* Header Styles */
header {
  background: linear-gradient(135deg, var(--ink) 0%, #2a2a2a 100%);
  color: var(--paper);
  padding: 1rem 3rem 1rem;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(232, 200, 154, 0.2);
}

header::before {
  content: "AssistLearnWorlds";
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: "Merriweather", serif;
  font-size: 9rem;
  font-weight: 600;
  color: rgba(232, 200, 154, 0.08);
  pointer-events: none;
  line-height: 1;
  white-space: nowrap;
}

header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #e8c89a, transparent);
}

header h1 {
  font-family: "Merriweather", serif;
  font-weight: 300;
  font-size: 3.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  position: relative;
  display: inline-block;
}

header h1 span {
  font-style: normal;
  color: #e8c89a;
  position: relative;
}

header h1 span::after {
  content: "";
  position: absolute;
  bottom: 5px;
  left: 0;
  right: 0;
  height: 2px;
  background: #e8c89a;
  opacity: 0.3;
}

header p {
  color: #999;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  position: relative;
  padding-left: 1.5rem;
}

header p::before {
  content: "→";
  position: absolute;
  left: 0;
  color: #e8c89a;
}

.hero-tagline {
  display: flex;
  gap: 2rem;
  margin-top: 1rem;
  font-size: 0.75rem;
  color: #e8c89a;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-top: 1px solid rgba(232, 200, 154, 0.2);
  padding-top: 1rem;
}

.hero-tagline span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-tagline span::before {
  content: "▶";
  font-size: 0.6rem;
  color: #e8c89a;
  opacity: 0.6;
}

/* Container */
.container {
  max-width: 1200px;
  width: 95%;
  margin: 0 auto;
  padding: 2rem 2rem 8rem;
  flex: 1 0 auto;
  position: relative;
}

/* Feature badges */
.feature-badges {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: -1rem 0 2rem 0;
}

.feature-badge {
  background: rgba(26, 26, 26, 0.03);
  padding: 0.5rem 1.2rem;
  border-radius: 30px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  border: 1px solid rgba(200, 191, 168, 0.3);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-badge::before {
  content: "✓";
  color: var(--green);
  font-weight: bold;
}

/* Stats preview cards */
.stats-preview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0 1rem 0;
}

.stat-preview-card {
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(200, 191, 168, 0.3);
  border-radius: 16px;
  padding: 1.2rem;
  text-align: center;
  transition: transform 0.2s;
}

.stat-preview-card:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.8);
}

.stat-preview-value {
  font-family: "Merriweather", serif;
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--ink);
  line-height: 1.2;
}

.stat-preview-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.stat-preview-desc {
  font-size: 0.6rem;
  color: var(--muted);
  margin-top: 0.3rem;
  opacity: 0.7;
}

/* Upload row */
.upload-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
  position: relative;
}

.upload-row::before {
  content: "⤚";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  color: var(--border);
  opacity: 0.5;
  z-index: 1;
}

.upload-row h3 {
  text-transform: uppercase;
}

.upload-row p {
  text-transform: uppercase;
}

/* Upload cards */
.upload-card {
  border: 2px solid var(--border);
  border-radius: 24px;
  background: linear-gradient(135deg, var(--cream) 0%, #f5f0e8 100%);
  padding: 2.5rem 1.8rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow:
    0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.upload-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 24px;
  padding: 2px;
  background: linear-gradient(135deg, var(--border), transparent);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0.3;
}

.upload-card input[type="file"] {
  display: none;
}

.upload-card:hover {
  border-color: var(--blue);
  background: linear-gradient(135deg, #f9f6f0 0%, #faf8f4 100%);
  box-shadow:
    0 8px 12px -2px rgba(0, 0, 0, 0.15),
    0 4px 8px -2px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px) scale(1.01);
}

.upload-card:active {
  transform: translateY(-2px) scale(0.99);
}

.upload-card .icon {
  font-size: 3.5rem;
  display: block;
  margin-bottom: 0.5rem;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.upload-card:hover .icon {
  transform: scale(1.15) rotate(5deg);
}

.upload-card h3 {
  font-family: "Merriweather", serif;
  font-weight: 300;
  font-size: 1.3rem;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.file-count {
  font-size: 0.63rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  display: block;
  margin: 0.5rem 0;
}

.file-name {
  font-size: 0.9rem;
  color: var(--blue);
  font-weight: 500;
  max-width: 90%;
  margin: 0 auto 0.5rem;
  word-break: break-word;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.upload-card p {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Analyse button */
.analyse-btn {
  background: var(--green);
  color: white;
  border: none;
  padding: 1rem 3rem;
  font-family: "Source Sans Pro", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 40px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  margin: 0 auto;
  display: block;
}

.analyse-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

.analyse-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
}

.analyse-btn:hover::before {
  left: 100%;
}

.analyse-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Status bar */
.status-bar {
  display: none;
  padding: 0.85rem 1.2rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.78rem;
  border-radius: 2px;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.status-bar.visible {
  display: flex;
}

.spinner {
  width: 13px;
  height: 13px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Results header */
.results-header {
  display: none;
  margin-top: 0.5rem;
  padding-bottom: 0.9rem;
  border-bottom: 2px solid var(--ink);
  align-items: baseline;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.results-header.visible {
  display: flex;
}

.results-header h2 {
  font-family: "Merriweather", serif;
  font-weight: 300;
  font-size: 1.5rem;
}

.results-header .meta {
  color: var(--muted);
  font-size: 0.73rem;
  letter-spacing: 0.05em;
}

.btn-group {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
}

.dl-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.55rem 1.1rem;
  font-family: "Source Sans Pro", sans-serif;
  font-size: 0.73rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.15s;
  text-transform: uppercase;
}

.dl-btn:hover {
  background: #a93226;
}

/* Legend */
.legend {
  display: none;
  margin-top: 0.8rem;
  margin-bottom: 0.2rem;
  gap: 1.5rem;
  font-size: 0.68rem;
  color: var(--muted);
  flex-wrap: wrap;
  align-items: center;
}

.legend.visible {
  display: flex;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-dot.good {
  background: var(--green);
}

.legend-rule {
  margin-left: auto;
  font-style: italic;
  font-size: 0.65rem;
  color: var(--muted);
}

/* Question list */
.question-list {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}

/* Result card for display */
.result-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  text-align: center;
}

.result-card-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.result-card-value {
  font-family: "Merriweather", serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--green);
}

/* Footer */
footer {
  background: linear-gradient(135deg, var(--ink) 0%, #2a2a2a 100%);
  color: var(--paper);
  padding: 2.5rem 3rem 2rem;
  width: 100%;
  margin-top: auto;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(232, 200, 154, 0.2);
}

footer::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
  background: var(--paper);
  clip-path: polygon(0 0, 100% 0, 50% 100%, 0 100%);
}

footer::after {
  content: "MCQ";
  position: absolute;
  left: 2rem;
  bottom: 1rem;
  font-family: "Merriweather", serif;
  font-size: 4rem;
  font-weight: 600;
  color: rgba(232, 200, 154, 0.03);
  pointer-events: none;
  line-height: 1;
}

footer p {
  color: #999;
  font-size: 0.8rem;
  text-align: center;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

footer p:first-child {
  margin-bottom: 0.5rem;
  color: #e8c89a;
}

/* ─────────────────────────────────────────
   FLOATING HOME BUTTON
───────────────────────────────────────── */
.home-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  background: linear-gradient(135deg, var(--ink) 0%, #2d2d2d 100%);
  color: var(--paper);
  text-decoration: none;
  font-family: "Source Sans Pro", sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.75rem 1.2rem;
  border-radius: 40px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    background 0.2s;
  border: 1px solid rgba(232, 200, 154, 0.15);
}
.home-btn::before {
  content: "←";
  color: #e8c89a;
  font-size: 0.8rem;
}
.home-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
  background: linear-gradient(135deg, #2d2d2d 0%, #3a3a3a 100%);
}
.home-btn:active {
  transform: translateY(0);
}

/* Responsive design */
@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }

  header::before {
    font-size: 4rem;
  }

  .stats-preview {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .upload-row {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .upload-row::before {
    display: none;
  }

  .upload-card {
    padding: 1.5rem 1rem;
  }

  .upload-card .icon {
    font-size: 2.5rem;
  }

  .upload-card h3 {
    font-size: 1rem;
  }

  .container {
    padding: 1.5rem 1rem 6rem;
  }
}