/* ============================
   Premium UI/UX: Glassmorphism & Neon Theme
   ============================ */
:root {
  --bg-primary:    #030712;
  --bg-secondary:  #111827;
  --bg-card:       rgba(17, 24, 39, 0.6);
  --bg-card-hover: rgba(31, 41, 55, 0.8);
  --bg-input:      rgba(17, 24, 39, 0.9);

  --accent-radar:  #00f0ff;
  --accent-purple: #b026ff;
  --accent-green:  #10b981;
  --accent-yellow: #f59e0b;
  --accent-red:    #ef4444;
  --accent-orange: #f97316;
  --accent-pink:   #ec4899;

  --cat-cosmetics-bg:  rgba(236,72,153,0.15);
  --cat-cosmetics-clr: #ff7eb3;
  --cat-health-bg:     rgba(16,185,129,0.15);
  --cat-health-clr:    #34d399;

  --text-primary:   #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted:     #4b5563;

  --border-subtle: rgba(255,255,255,0.08);
  --border-glow:   rgba(0,240,255,0.4);
  --border-glow-hover: rgba(176,38,255,0.5);

  --shadow-card:  0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-radar: 0 0 50px rgba(0,240,255,0.15);
  --shadow-neon:  0 0 15px rgba(0,240,255,0.3);

  --radius-sm:   10px;
  --radius-md:   16px;
  --radius-lg:   24px;
  --radius-full: 9999px;

  --font: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  max-width: 480px;
  margin: 0 auto;
  padding-bottom: 60px;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(0, 240, 255, 0.08), transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(176, 38, 255, 0.08), transparent 50%);
  background-attachment: fixed;
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

/* ============================
   Header & Nav
   ============================ */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 7, 18, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 12px;
}

.header-logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 24px; filter: drop-shadow(0 0 8px rgba(0,240,255,0.6)); }

.logo-text {
  font-size: 18px;
  font-weight: 900;
  background: linear-gradient(90deg, var(--accent-radar), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.update-label {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0, 242, 254, 0.1);
  color: #00f2fe;
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.logout-btn {
  background: transparent;
  color: #94a3b8;
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.logout-btn:hover {
  color: #fff;
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.tab-nav { display: flex; border-top: 1px solid rgba(255,255,255,0.03); }
.tab {
  flex: 1; padding: 14px 8px; background: none; border: none;
  font-family: var(--font); font-size: 14px; font-weight: 700;
  color: var(--text-muted); cursor: pointer; position: relative;
  transition: all 0.3s ease;
}
.tab::after {
  content: ''; position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%); width: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent-radar), var(--accent-purple));
  border-radius: var(--radius-full) var(--radius-full) 0 0;
  opacity: 0; transition: all 0.3s ease;
}
.tab.active { color: #fff; text-shadow: 0 0 10px rgba(255,255,255,0.3); }
.tab.active::after { width: 40%; opacity: 1; box-shadow: var(--shadow-neon); }

/* ============================
   Tab Panels & Filter
   ============================ */
.tab-panel { padding: 20px; display: flex; flex-direction: column; gap: 20px; }
.tab-panel.hidden { display: none; }

.filter-bar { display: flex; gap: 10px; }
.filter-btn {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full); padding: 8px 18px; font-size: 13px;
  font-weight: 600; color: var(--text-secondary); cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.filter-btn:hover { background: rgba(255,255,255,0.08); transform: translateY(-1px); }
.filter-btn.active {
  background: rgba(0,240,255,0.15); border-color: var(--accent-radar);
  color: #fff; box-shadow: inset 0 0 12px rgba(0,240,255,0.2), 0 0 15px rgba(0,240,255,0.1);
  text-shadow: 0 0 5px rgba(255,255,255,0.5);
}

/* ============================
   Radar Heatmap (Top 5)
   ============================ */
.radar-heatmap {
  background: linear-gradient(145deg, rgba(17,24,39,0.7), rgba(3,7,18,0.9));
  backdrop-filter: blur(12px); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-radar);
  position: relative; overflow: hidden;
}
.radar-heatmap::before {
  content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(176,38,255,0.05) 0%, transparent 50%);
  animation: rotateGlow 15s linear infinite; pointer-events: none;
}
@keyframes rotateGlow { 100% { transform: rotate(360deg); } }

.radar-title { font-size: 15px; font-weight: 800; color: #fff; margin-bottom: 18px; display: flex; align-items: center; gap: 8px;}
.radar-title::before { content: ''; display: block; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-red); box-shadow: 0 0 10px var(--accent-red); animation: pulseDot 2s infinite; }
@keyframes pulseDot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

.radar-bars { display: flex; flex-direction: column; gap: 14px; position: relative; z-index: 1; }
.radar-bar-item { display: flex; align-items: center; gap: 12px; }
.radar-bar-rank { font-size: 14px; font-weight: 900; color: var(--text-muted); width: 20px; text-align: right; }
.radar-bar-rank.gold { color: #ffd700; text-shadow: 0 0 10px rgba(255,215,0,0.5); }
.radar-bar-rank.silver { color: #e2e8f0; text-shadow: 0 0 10px rgba(226,232,240,0.4); }
.radar-bar-rank.bronze { color: #f59e0b; text-shadow: 0 0 10px rgba(245,158,11,0.4); }

.radar-bar-info { flex: 1; min-width: 0; }
.radar-bar-name { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.radar-bar-track { height: 8px; background: rgba(255,255,255,0.06); border-radius: var(--radius-full); overflow: hidden; box-shadow: inset 0 1px 3px rgba(0,0,0,0.5); }
.radar-bar-fill { height: 100%; border-radius: var(--radius-full); transition: width 1s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: inset 0 0 5px rgba(255,255,255,0.5); }
.radar-bar-score { font-size: 15px; font-weight: 900; color: var(--accent-radar); width: 40px; text-align: right; text-shadow: var(--shadow-neon); }

/* ============================
   Ranking List
   ============================ */
.ranking-list { display: flex; flex-direction: column; gap: 12px; }
.rank-card {
  background: var(--bg-card); backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-md);
  padding: 16px; display: flex; align-items: center; gap: 14px;
  cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.rank-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; opacity: 0; transition: all 0.3s;
}
.rank-card.cat-cosmetics::before { background: var(--cat-cosmetics-clr); box-shadow: 0 0 10px var(--cat-cosmetics-clr); }
.rank-card.cat-health::before    { background: var(--cat-health-clr); box-shadow: 0 0 10px var(--cat-health-clr); }

.rank-card:hover {
  background: var(--bg-card-hover); transform: translateY(-3px) scale(1.01);
  border-color: rgba(255,255,255,0.15); box-shadow: 0 12px 25px rgba(0,0,0,0.4);
}
.rank-card:hover::before { opacity: 1; }

.rank-num { font-size: 16px; font-weight: 900; width: 28px; text-align: center; color: var(--text-muted); }
.rank-num.gold { color: #ffd700; text-shadow: 0 0 10px rgba(255,215,0,0.4); }
.rank-num.silver { color: #e2e8f0; }
.rank-num.bronze { color: #f59e0b; }

.rank-emoji { font-size: 26px; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3)); }
.rank-info { flex: 1; min-width: 0; }
.rank-name { font-size: 16px; font-weight: 800; color: #fff; margin-bottom: 5px; display: flex; align-items: center; gap: 6px; }

.cat-badge { font-size: 10px; font-weight: 800; padding: 3px 8px; border-radius: var(--radius-full); text-transform: uppercase; letter-spacing: 0.5px;}
.cat-badge.cosmetics { background: var(--cat-cosmetics-bg); color: var(--cat-cosmetics-clr); border: 1px solid rgba(255,126,179,0.3); }
.cat-badge.health { background: var(--cat-health-bg); color: var(--cat-health-clr); border: 1px solid rgba(52,211,153,0.3); }

.rank-meta { font-size: 12px; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; opacity: 0.8;}

.rank-right { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.trend-direction { font-size: 15px; font-weight: 900; text-shadow: 0 1px 5px rgba(0,0,0,0.5); }
.dir-hot    { color: #ff3366; text-shadow: 0 0 10px rgba(255,51,102,0.5); }
.dir-up     { color: #00ffaa; text-shadow: 0 0 10px rgba(0,255,170,0.5); }
.dir-stable { color: #ffb800; }
.dir-down   { color: #6b7280; }

.rank-score { font-size: 20px; font-weight: 900; color: var(--accent-radar); text-shadow: var(--shadow-neon); }

/* ============================
   Modal (Premium Glass)
   ============================ */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.85); backdrop-filter: blur(5px); display: flex; align-items: flex-end; z-index: 200; animation: fadeIn 0.3s ease; }
.modal-overlay.hidden { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-card {
  background: linear-gradient(180deg, rgba(17,24,39,0.95), rgba(3,7,18,1));
  backdrop-filter: blur(20px); border-top: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0; padding: 28px 24px 50px;
  width: 100%; max-width: 480px; margin: 0 auto; max-height: 88vh; overflow-y: auto;
  animation: slideUp 0.4s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 -10px 40px rgba(0,0,0,0.8);
}
@keyframes slideUp { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-close-btn { position: absolute; top: 20px; right: 20px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: 50%; width: 36px; height: 36px; font-size: 16px; color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s; }
.modal-close-btn:hover { background: rgba(255,255,255,0.15); transform: rotate(90deg); }

.modal-header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.modal-emoji { font-size: 48px; filter: drop-shadow(0 4px 10px rgba(0,0,0,0.5)); }
.modal-ingredient-name { font-size: 26px; font-weight: 900; color: #fff; text-shadow: 0 2px 4px rgba(0,0,0,0.5); margin-top: 6px;}

.modal-trend-row { display: flex; align-items: center; justify-content: space-between; background: rgba(0,0,0,0.3); border: 1px solid rgba(255,255,255,0.05); border-radius: var(--radius-md); padding: 18px 24px; margin-bottom: 24px; box-shadow: inset 0 2px 10px rgba(0,0,0,0.5); }
.modal-score-label { font-size: 13px; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.modal-score { font-size: 40px; font-weight: 900; color: var(--accent-radar); text-shadow: 0 0 20px rgba(0,240,255,0.4); line-height: 1;}
.modal-direction { font-size: 32px; }

.modal-body { display: flex; flex-direction: column; gap: 24px; }
.modal-section-title { font-size: 15px; font-weight: 800; color: var(--accent-purple); margin-bottom: 10px; display: flex; align-items: center; gap: 8px;}
.modal-desc { font-size: 15px; color: #e5e7eb; line-height: 1.8; font-weight: 500;}
.modal-products { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.modal-products li { font-size: 14px; color: #d1d5db; display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: rgba(255,255,255,0.03); border-radius: var(--radius-sm); border: 1px solid rgba(255,255,255,0.02);}
.modal-products li::before { content: "\2728"; font-size: 14px; }
.modal-price-range { font-size: 20px; font-weight: 900; color: var(--accent-yellow); text-shadow: 0 0 10px rgba(245,158,11,0.3); padding: 12px; background: rgba(245,158,11,0.1); border-radius: var(--radius-sm); border: 1px solid rgba(245,158,11,0.2); text-align: center;}
.modal-caution { font-size: 14px; color: #fecaca; line-height: 1.7; background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); border-radius: var(--radius-md); padding: 16px; font-weight: 600; box-shadow: 0 4px 15px rgba(239,68,68,0.1);}

/* ============================
   Calculator Styles
   ============================ */
.calc-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.calc-result-card {
  background: linear-gradient(135deg, rgba(0,240,255,0.1), rgba(176,38,255,0.1));
  border: 1px solid rgba(0,240,255,0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(0,240,255,0.05);
  transition: all 0.3s ease;
}

.calc-result-card.profit {
  border-color: var(--accent-green);
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(16,185,129,0.05));
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(16,185,129,0.1);
}

.calc-result-card.loss {
  border-color: var(--accent-red);
  background: linear-gradient(135deg, rgba(239,68,68,0.15), rgba(239,68,68,0.05));
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(239,68,68,0.1);
  animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-row.primary {
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 16px;
}

.result-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
}

.result-value {
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.result-value.net-profit {
  font-size: 32px;
  color: var(--accent-radar);
  text-shadow: 0 0 15px rgba(0,240,255,0.5);
}

.calc-result-card.profit .result-value.net-profit {
  color: var(--accent-green);
  text-shadow: 0 0 15px rgba(16,185,129,0.5);
}

.calc-result-card.loss .result-value.net-profit {
  color: var(--accent-red);
  text-shadow: 0 0 15px rgba(239,68,68,0.5);
}

.result-row.secondary {
  gap: 20px;
}

.result-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-form {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.calc-input-row {
  display: flex;
  gap: 16px;
}

.calc-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.calc-input-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
}

.calc-input {
  background: rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  transition: all 0.3s;
  font-family: var(--font);
}

.calc-input:focus {
  outline: none;
  border-color: var(--accent-radar);
  background: rgba(0,240,255,0.05);
  box-shadow: inset 0 0 10px rgba(0,240,255,0.1), 0 0 10px rgba(0,240,255,0.2);
}

.calc-input::placeholder {
  color: rgba(255,255,255,0.2);
  font-weight: 500;
}

.btn-reset-calc {
  margin-top: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 14px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-reset-calc:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.btn-reset-calc:active {
  transform: scale(0.98);
}

/* Loaders & Errors */
.loading-overlay, .error-overlay { position: fixed; inset: 0; background: rgba(3,7,18,0.9); backdrop-filter: blur(10px); display: flex; flex-direction: column; align-items: center; justify-content: center; z-index: 999; }
.loading-overlay.hidden, .error-overlay.hidden { display: none; }
.loading-spinner { width: 50px; height: 50px; border: 4px solid rgba(255,255,255,0.1); border-top-color: var(--accent-radar); border-radius: 50%; animation: spin 1s linear infinite; margin-bottom: 20px; box-shadow: 0 0 15px rgba(0,240,255,0.3); }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 16px; font-weight: 700; color: #fff; letter-spacing: 1px; animation: pulseText 1.5s infinite; }
@keyframes pulseText { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.error-content { text-align: center; background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3); padding: 30px; border-radius: var(--radius-lg); box-shadow: 0 10px 30px rgba(239,68,68,0.2); }
.error-content p { font-size: 16px; color: #fecaca; margin-top: 15px; font-weight: 600; line-height: 1.5; }
.error-content small { font-size: 13px; color: #fca5a5; opacity: 0.8; }