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

:root {
  --bg: #0e0e0e;
  --surface: #161616;
  --surface2: #1f1f1f;
  --border: #2a2a2a;
  --accent: #e8c547;
  --accent2: #e87d47;
  --text: #f0ede6;
  --text-muted: #888;
  --radius: 12px;
  --font-display: 'DM Serif Display', serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background grid */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  background: rgba(14,14,14,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--text);
}
.logo span { color: var(--accent); }

.uses-left {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 100px;
}

main {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 140px 24px 80px;
}

/* Hero */
.hero { margin-bottom: 64px; }

.label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.05;
  color: var(--text);
  margin-bottom: 24px;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* Input card */
.input-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 18px;
}
label:first-child { margin-top: 0; }

.hint {
  text-transform: none;
  letter-spacing: 0;
  font-size: 11px;
  opacity: 0.6;
}

input, textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 14px 16px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
  margin-top: 8px;
}

input:focus, textarea:focus {
  border-color: var(--accent);
}

input::placeholder, textarea::placeholder {
  color: #444;
}

button#analyze-btn {
  margin-top: 28px;
  background: var(--accent);
  color: #0e0e0e;
  border: none;
  border-radius: var(--radius);
  padding: 16px 28px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background 0.2s, transform 0.15s;
  width: 100%;
}

button#analyze-btn:hover {
  background: #f0d060;
  transform: translateY(-1px);
}

.btn-arrow {
  font-size: 18px;
  transition: transform 0.2s;
}

button#analyze-btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* Loading */
.loading {
  text-align: center;
  padding: 60px 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 20px;
  animation: spin 0.8s linear infinite;
}

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

/* Results */
.results-section { margin-top: 64px; animation: fadeUp 0.5s ease; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.results-header h2 {
  font-family: var(--font-display);
  font-size: 36px;
}

.overall-score {
  display: flex;
  align-items: baseline;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
}

.score-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-right: 8px;
}

.score-value {
  font-family: var(--font-display);
  font-size: 36px;
  color: var(--accent);
  line-height: 1;
}

.score-max {
  font-size: 14px;
  color: var(--text-muted);
}

/* Cards */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  transition: border-color 0.2s;
}

.result-card:hover { border-color: #3a3a3a; }

.result-card.wide { grid-column: 1 / -1; }

.card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.card-icon {
  width: 32px;
  height: 32px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  flex-shrink: 0;
}

.card-name {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  flex: 1;
}

.card-score {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
}

.issues-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.issues-list li {
  font-size: 14px;
  color: #bbb;
  padding-left: 16px;
  position: relative;
}

.issues-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent2);
  font-size: 12px;
}

.improved-box {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text);
  font-style: italic;
  line-height: 1.5;
}

.card-explanation {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.wins-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 20px;
}

.wins-list li {
  font-size: 15px;
  color: var(--text);
  line-height: 1.5;
}

.wins-list li::marker {
  color: var(--accent);
  font-family: var(--font-mono);
}

.overall-summary {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 32px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent2);
  border-radius: 8px;
}

.url-row {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.url-row input { flex: 1; margin-top: 0; }

#fetch-btn {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s;
}

#fetch-btn:hover { border-color: var(--accent); color: var(--accent); }

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0 4px;
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--font-mono);
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Responsive */
@media (max-width: 580px) {
  header { padding: 16px 20px; }
  main { padding: 120px 16px 60px; }
  .input-card { padding: 24px; }
  .cards-grid { grid-template-columns: 1fr; }
  .result-card.wide { grid-column: 1; }
  .results-header { flex-direction: column; align-items: flex-start; gap: 16px; }
}

.upgrade-btn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 100px;
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.upgrade-btn:hover {
  background: var(--accent);
  color: #0e0e0e;
}