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

:root {
  --bg-0: #060913;
  --bg-1: #0f172a;
  --bg-2: #1e293b;
  --surface: #111c34;
  --surface-2: #172142;
  --border: #2a3558;
  --border-soft: rgba(255,255,255,0.08);
  --text: #e6edff;
  --muted: #94a3b8;
  --muted-2: #64748b;

  --primary: #7C3AED;   /* Ungu = Matang */
  --danger:  #DC2626;   /* Merah = Mentah */
  --accent:  #38BDF8;   /* Sky blue aksen */
  --success: #10B981;

  --radius-sm: 10px;
  --radius:    16px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-lg: 0 20px 50px -12px rgba(124,58,237,0.25), 0 10px 24px rgba(0,0,0,0.35);
}

html, body { height: 100%; }

body {
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, "Inter", sans-serif;
  min-height: 100vh;
  line-height: 1.55;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(124,58,237,0.22), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(56,189,248,0.18), transparent 55%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 100%);
  background-attachment: fixed;
  padding: 20px 12px 40px;
  -webkit-font-smoothing: antialiased;
}

.app {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ===================================================== HERO */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(124,58,237,0.18), rgba(56,189,248,0.10) 55%, rgba(220,38,38,0.10));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 22px 22px;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.hero::before{
  content:"";
  position:absolute; inset:-40% -20% auto auto;
  width:280px; height:280px;
  background: radial-gradient(closest-side, rgba(124,58,237,0.25), transparent 70%);
  filter: blur(10px);
  pointer-events:none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16,185,129,0.28);
  color: #6ee7b7;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 14px;
}
.hero-icon { font-size: 3rem; line-height: 1; margin-bottom: 6px; filter: drop-shadow(0 6px 10px rgba(0,0,0,.35)); }
.hero-title {
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, #fff, #e9d5ff 60%, #bae6fd);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}
.hero-subtitle strong { color: var(--text); font-weight: 700; }

.hero-stats {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.hero-stat {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 10px 6px;
}
.hero-stat-num { font-weight: 800; font-size: 1rem; color: #fff; }
.hero-stat-lbl { color: var(--muted-2); font-size: 0.72rem; }

/* ===================================================== INFO CARD (Cara Kerja + Tips) */
.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px;
  box-shadow: var(--shadow-md);
}
.info-card h2,
.result-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.005em;
}

.steps { list-style: none; display: grid; gap: 10px; counter-reset: step; }
.steps li {
  display: flex; align-items: flex-start; gap: 10px;
  color: var(--text);
  font-size: 0.9rem;
  padding: 10px 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
}
.step-num {
  flex: 0 0 26px; width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.8rem; font-weight: 800;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  box-shadow: var(--shadow-sm);
}

/* ===================================================== MODE TABS */
.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  box-shadow: var(--shadow-md);
}
.tab {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 10px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
}
.tab:hover { color: var(--text); background: rgba(255,255,255,0.03); }
.tab.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #5B21B6);
  border-color: rgba(255,255,255,0.12);
  box-shadow: 0 8px 20px -6px rgba(124,58,237,0.55);
}
.tab-icon { font-size: 1.05rem; }
.tab-text { white-space: nowrap; }

/* ===================================================== CANVAS WRAPPER */
.canvas-wrapper {
  position: relative;
  background:
    linear-gradient(180deg, rgba(56,189,248,0.06), rgba(124,58,237,0.06)),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}
#canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  margin: 10px;
  will-change: transform;
  transform: translateZ(0);
  image-rendering: optimizeSpeed;
  backface-visibility: hidden;
}
.placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  text-align: center;
  padding: 24px;
  pointer-events: none;
}
.placeholder-icon { font-size: 3.6rem; opacity: 0.35; margin-bottom: 10px; }
.placeholder-title { font-weight: 700; font-size: 1.02rem; color: #cbd5e1; }
.placeholder-desc { font-size: 0.86rem; margin-top: 4px; color: var(--muted-2); }

/* ===================================================== CONTROLS / BUTTON */
.controls {
  display: flex;
  justify-content: center;
}
.controls.hidden { display: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 20px;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  width: 100%;
  max-width: 420px;
}
.btn:hover { transform: translateY(-1px); opacity: 0.96; }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #5B21B6);
}
.btn.danger {
  background: linear-gradient(135deg, var(--danger), #991B1B);
}

/* ===================================================== STATUS */
.status {
  text-align: center;
  padding: 11px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--muted);
  box-shadow: var(--shadow-sm);
}

/* ===================================================== PROGRESS MODEL */
.model-progress-wrap {
  background: linear-gradient(160deg, rgba(124,58,237,0.16), rgba(56,189,248,0.08));
  border: 1px solid rgba(124,58,237,0.35);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow-md);
}
.model-progress-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 9px;
}
.model-progress-label { font-weight: 700; font-size: 0.88rem; color: #e2e8f0; }
.model-progress-pct {
  font-weight: 900;
  font-size: 0.95rem;
  background: linear-gradient(90deg, #a78bfa, #7dd3fc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.model-progress-track {
  width: 100%;
  height: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
}
.model-progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #7C3AED 0%, #A78BFA 55%, #38BDF8 100%);
  background-size: 200% 100%;
  border-radius: 999px;
  transition: width 0.35s cubic-bezier(.22,1,.36,1);
  animation: shimmer 2.4s linear infinite;
  box-shadow: 0 0 14px -2px rgba(124,58,237,0.5);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.model-progress-tip {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(255,255,255,0.1);
  font-size: 0.78rem;
  color: var(--muted);
  text-align: center;
}
.model-progress-tip strong { color: #c4b5fd; }

/* ===================================================== RESULT CARD */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  box-shadow: var(--shadow-lg);
}
.result-header {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  margin-bottom: 14px;
}
.result-header h2 { margin: 0; }
.result-chip {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(100,116,139,0.2);
  color: #cbd5e1;
  border: 1px solid var(--border-soft);
}
.result-chip.ok { background: rgba(16,185,129,0.15); color: #6ee7b7; border-color: rgba(16,185,129,0.3); }
.result-chip.warn { background: rgba(251,191,36,0.14); color: #fcd34d; border-color: rgba(251,191,36,0.3); }
.result-chip.ng { background: rgba(220,38,38,0.16); color: #fca5a5; border-color: rgba(220,38,38,0.32); }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 14px;
}
.result-class {
  border-radius: var(--radius);
  padding: 16px 14px 14px;
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.result-matang { border-color: rgba(124,58,237,0.45); }
.result-matang .result-dot { background: var(--primary); box-shadow: 0 0 0 4px rgba(124,58,237,0.18); }
.result-matang .result-class-value { color: #ddd6fe; }
.result-matang .result-acc-val { color: #c4b5fd; }

.result-mentah { border-color: rgba(220,38,38,0.45); }
.result-mentah .result-dot { background: var(--danger); box-shadow: 0 0 0 4px rgba(220,38,38,0.18); }
.result-mentah .result-class-value { color: #fecaca; }
.result-mentah .result-acc-val { color: #fca5a5; }

.result-class-head {
  display: flex; align-items: center; gap: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 4px;
}
.result-dot {
  width: 10px; height: 10px;
  border-radius: 999px;
  flex: 0 0 auto;
}
.result-class-name { font-weight: 700; color: #e2e8f0; }

.result-class-value {
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}
.result-class-unit {
  font-size: 0.78rem;
  color: var(--muted-2);
  align-self: flex-end;
  padding-bottom: 4px;
}
.result-metric-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
}

.result-metric {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 10px 10px 8px;
  margin-top: 10px;
}
.result-metric-lbl {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #94a3b8;
  margin-bottom: 4px;
}
.result-matang .result-metric {
  border-color: rgba(124,58,237,0.22);
  background: linear-gradient(180deg, rgba(124,58,237,0.08), rgba(124,58,237,0.02));
}
.result-mentah .result-metric {
  border-color: rgba(220,38,38,0.22);
  background: linear-gradient(180deg, rgba(220,38,38,0.08), rgba(220,38,38,0.02));
}

.result-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
}
.result-row.mt { margin-top: 14px; }
.result-row-lbl {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--muted);
}
.result-row-val {
  font-size: 0.9rem;
  font-weight: 800;
  color: #e2e8f0;
}
.result-acc-val {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-shadow: 0 0 12px rgba(124,58,237,0.2);
}

.progress {
  width: 100%;
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 2px;
}
.progress-soft {
  height: 6px;
  background: rgba(255,255,255,0.04);
}
.progress-bar {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(.22,1,.36,1);
}
.result-matang .progress-bar { background: linear-gradient(90deg, #8B5CF6, #A78BFA); }
.result-mentah .progress-bar { background: linear-gradient(90deg, #EF4444, #F87171); }

.result-summary {
  margin-top: 14px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.03);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}
.result-summary strong { color: var(--text); }

/* ===================================================== PERF / PRESET CARD */
.perf-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  box-shadow: var(--shadow-md);
}
.perf-head {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin-bottom: 12px;
}
.perf-head h2 { font-size: 1rem; font-weight: 700; margin: 0; }
.perf-chip {
  font-size: 0.72rem;
  color: var(--muted);
  padding: 4px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  white-space: nowrap;
}
.perf-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}
@media (max-width: 520px) {
  .perf-options { grid-template-columns: 1fr; }
}
.perf-opt { cursor: pointer; display: block; }
.perf-opt input { position: absolute; opacity: 0; pointer-events: none; }
.perf-card-inner {
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  transition: all 0.18s ease;
}
.perf-opt input:checked + .perf-card-inner {
  border-color: rgba(124,58,237,0.55);
  background: linear-gradient(160deg, rgba(124,58,237,0.18), rgba(56,189,248,0.06));
  box-shadow: 0 6px 18px -6px rgba(124,58,237,0.4);
}
.perf-opt:hover .perf-card-inner { border-color: rgba(255,255,255,0.12); }
.perf-title { font-weight: 700; font-size: 0.88rem; margin-bottom: 2px; color: #e2e8f0; }
.perf-desc { font-size: 0.72rem; color: var(--muted-2); }
.perf-info {
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  padding-top: 6px;
  border-top: 1px dashed var(--border-soft);
}

/* ===================================================== LEGEND */
.legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 22px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.legend-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem;
  color: #cbd5e1;
}
.dot {
  width: 14px; height: 14px;
  border-radius: 4px;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.05);
}

/* ===================================================== TIPS */
.tips-card h2 { color: #fde68a; }
.tips-list { list-style: none; display: grid; gap: 8px; }
.tips-list li {
  position: relative;
  padding-left: 22px;
  color: #e2e8f0;
  font-size: 0.88rem;
}
.tips-list li::before {
  content: "🌿";
  position: absolute;
  left: 0; top: 0;
}
.tips-list strong { color: #fff; }

/* ===================================================== FOOTER */
.footer {
  text-align: center;
  color: var(--muted-2);
  font-size: 0.78rem;
  padding-top: 10px;
}
.footer-sub { margin-top: 2px; color: #475569; }

/* ===================================================== RESPONSIVE (Mobile first) */
@media (max-width: 480px) {
  body { padding: 14px 10px 28px; }
  .hero { padding: 22px 16px 18px; }
  .tab { padding: 11px 8px; font-size: 0.88rem; }
  .canvas-wrapper { min-height: 260px; }
  .result-grid { gap: 10px; }
  .result-class { padding: 12px; }
  .btn { padding: 13px 16px; font-size: 0.96rem; }
}

@media (min-width: 640px) {
  .hero { padding: 30px 28px 24px; }
  .hero-stats { max-width: 460px; margin-left: auto; margin-right: auto; }
}

/* Scrollbar halus (opsional, Chrome/Webkit) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #23304f; border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: #2c3b65; }