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

:root {
  --bg-dark: #081116;
  --bg-card: rgba(14, 28, 36, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);

  --accent-green: #10b981;
  --accent-cyan: #06b6d4;
  --accent-emerald: #34d399;
  --accent-amber: #f59e0b;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --radius-md: 14px;
  --radius-lg: 20px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Plus Jakarta Sans', 'Noto Sans KR', sans-serif;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 10% 10%, rgba(16, 185, 129, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 90% 90%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
}

.header {
  background: rgba(8, 17, 22, 0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-box {
  background: linear-gradient(135deg, #10b981, #06b6d4);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.logo-title h1 {
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(90deg, #34d399, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-title p {
  font-size: 11px;
  color: var(--text-secondary);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 24px;
  flex: 1;
}

@media (max-width: 900px) {
  .container { grid-template-columns: 1fr; }
}

.panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(14px);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.panel-title {
  font-size: 17px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  background: #060e14;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 16px;
  color: white;
  font-size: 14px;
  outline: none;
}

.form-input:focus {
  border-color: var(--accent-green);
}

.result-card {
  background: linear-gradient(135deg, rgba(6, 14, 20, 0.9), rgba(14, 28, 36, 0.95));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.metric-big {
  font-size: 32px;
  font-weight: 900;
  color: #34d399;
}

.btn-report {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
  border: none;
  padding: 14px 20px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

/* Mobile Responsive */
@media (max-width: 640px) {
  .header {
    padding: 12px 16px;
  }
  .logo-title h1 {
    font-size: 16px;
  }
  .logo-title p {
    font-size: 10px;
  }
  .container {
    padding: 12px 16px;
    gap: 16px;
  }
  .panel {
    padding: 16px;
    gap: 14px;
  }
}