/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand: #16a34a;
  --brand-light: #dcfce7;
  --brand-dark: #15803d;
  --green: #22c55e;
  --green-bg: #f0fdf4;
  --yellow: #eab308;
  --yellow-bg: #fefce8;
  --orange: #f97316;
  --orange-bg: #fff7ed;
  --red: #ef4444;
  --red-bg: #fef2f2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.08);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

.container { max-width: 900px; margin: 0 auto; padding: 0 16px; }

/* === Header === */
.header {
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  position: sticky; top: 0; z-index: 100;
}
.header-inner { display: flex; align-items: center; padding: 12px 0; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { font-size: 32px; }
.logo-title { font-size: 18px; font-weight: 700; color: var(--gray-900); }
.logo-sub { font-size: 12px; color: var(--gray-500); }

/* === Main === */
.main { padding: 32px 0 64px; }

/* === Card === */
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-100);
  margin-bottom: 24px;
}

/* === Hero === */
.hero { text-align: center; margin-bottom: 32px; }
.hero-title { font-size: 36px; font-weight: 800; letter-spacing: -0.02em; }
.hero-sub { font-size: 18px; color: var(--gray-500); margin-top: 8px; }

/* === Form === */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.form-section { display: flex; flex-direction: column; gap: 14px; }
.section-title {
  font-size: 17px; font-weight: 700; color: var(--gray-800);
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 4px;
}
.field { display: flex; flex-direction: column; }
.field-label {
  font-size: 13px; font-weight: 500; color: var(--gray-600);
  margin-bottom: 6px;
}
.tooltip { color: var(--gray-400); cursor: help; font-size: 12px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.input {
  width: 100%;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-900);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
  font-family: inherit;
}
.input::placeholder { color: var(--gray-400); font-weight: 400; }
.input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-light);
}
.input-wrap { position: relative; }
.input-currency { padding-right: 36px; }
.input-suffix {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  font-size: 14px; color: var(--gray-400); pointer-events: none;
}

/* Number inputs: hide spinners */
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; }

/* === Warning === */
.warning {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--yellow-bg);
  border: 1px solid #fde68a;
  color: #92400e;
  font-size: 14px;
  font-weight: 500;
}

/* === Installment Toggle === */
.installment-toggle {
  margin-top: 20px;
  border: none;
}
.installment-toggle summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-500);
  transition: color .2s;
  user-select: none;
}
.installment-toggle summary:hover { color: var(--gray-700); }
.installment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

/* === Button === */
.btn-primary {
  display: block;
  width: 100%;
  margin-top: 28px;
  padding: 16px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(22,163,74,.3);
  transition: background .2s, transform .1s, box-shadow .2s;
}
.btn-primary:hover { background: var(--brand-dark); box-shadow: 0 6px 20px rgba(22,163,74,.35); }
.btn-primary:active { transform: scale(.98); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }

.btn-small {
  padding: 6px 14px;
  border: none;
  border-radius: 8px;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background .2s;
}
.btn-small:hover { background: var(--gray-200); }

.btn-text-danger {
  background: none; border: none; cursor: pointer;
  font-size: 12px; color: var(--gray-400); font-family: inherit;
  margin-top: 14px; transition: color .2s;
}
.btn-text-danger:hover { color: var(--red); }

/* === Result Card === */
.result-card { text-align: center; }
.result-header { margin-bottom: 20px; }
.result-name { font-size: 24px; font-weight: 800; color: var(--gray-900); }
.result-price { font-size: 32px; font-weight: 700; color: var(--gray-800); margin-top: 4px; }

.status-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 17px; font-weight: 700;
  margin-bottom: 24px;
}
.status-badge.green  { background: var(--green-bg);  border: 1.5px solid #bbf7d0; color: #166534; }
.status-badge.yellow { background: var(--yellow-bg); border: 1.5px solid #fde68a; color: #854d0e; }
.status-badge.orange { background: var(--orange-bg); border: 1.5px solid #fed7aa; color: #9a3412; }
.status-badge.red    { background: var(--red-bg);    border: 1.5px solid #fecaca; color: #991b1b; }
.status-emoji { font-size: 22px; }

.stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
}
.stat-block {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--gray-50);
  text-align: center;
}
.stat-block.highlight { background: var(--red-bg); border: 1px solid #fecaca; }
.stat-label { font-size: 12px; font-weight: 500; color: var(--gray-500); }
.stat-value { font-size: 22px; font-weight: 700; color: var(--gray-900); margin-top: 4px; }
.stat-block.highlight .stat-value { color: var(--red); }
.stat-sub { font-size: 11px; color: var(--gray-400); margin-top: 2px; }

.verdict {
  margin-top: 20px;
  font-size: 15px;
  color: var(--gray-600);
}

/* === Work Time Card === */
.card-title { font-size: 17px; font-weight: 700; color: var(--gray-800); margin-bottom: 16px; }
.card-sub { font-size: 13px; color: var(--gray-500); margin-top: -12px; margin-bottom: 16px; }

.worktime-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.worktime-box {
  padding: 20px;
  border-radius: var(--radius-sm);
  background: var(--green-bg);
  border: 1px solid #bbf7d0;
  text-align: center;
}
.worktime-label { font-size: 13px; font-weight: 500; color: #16a34a; }
.worktime-value { font-size: 32px; font-weight: 800; color: #15803d; margin-top: 4px; }

.bar-section { margin-top: 20px; }
.bar-header { display: flex; justify-content: space-between; font-size: 11px; color: var(--gray-500); margin-bottom: 4px; }
.bar-track {
  height: 16px; border-radius: 100px;
  background: var(--gray-100);
  overflow: hidden;
}
.bar-fill {
  height: 100%; border-radius: 100px;
  background: linear-gradient(90deg, #4ade80, #16a34a);
  transition: width .8s cubic-bezier(.4,0,.2,1);
}
.bar-caption { text-align: center; font-size: 13px; color: var(--gray-500); margin-top: 10px; }
.hourly-info { text-align: center; font-size: 12px; color: var(--gray-400); margin-top: 8px; }

/* === Goal Card === */
.goal-target { text-align: center; font-size: 14px; color: var(--gray-500); margin-bottom: 16px; }
.goal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.goal-box {
  padding: 18px; border-radius: var(--radius-sm); text-align: center;
}
.goal-box-green { background: var(--green-bg); border: 1px solid #bbf7d0; }
.goal-box-red   { background: var(--red-bg);   border: 1px solid #fecaca; }
.goal-box-label { font-size: 12px; font-weight: 500; }
.goal-box-green .goal-box-label { color: #16a34a; }
.goal-box-red   .goal-box-label { color: #ef4444; }
.goal-box-value { font-size: 24px; font-weight: 700; margin-top: 4px; }
.goal-box-green .goal-box-value { color: #15803d; }
.goal-box-red   .goal-box-value { color: #991b1b; }
.goal-delay { text-align: center; font-size: 14px; color: var(--gray-600); margin-top: 14px; }

/* === Chart === */
.chart-container {
  width: 100%; height: 280px;
  position: relative;
}
.chart-container canvas { width: 100% !important; height: 100% !important; }
.chart-legend {
  display: flex; justify-content: center; gap: 24px; margin-top: 12px;
  font-size: 13px; color: var(--gray-600);
}
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; }
.legend-green { background: var(--green); }
.legend-red   { background: var(--red); }
.chart-caption { text-align: center; font-size: 12px; color: var(--gray-400); margin-top: 8px; }

/* === Scenarios === */
.scenarios-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.scenario-box {
  padding: 20px;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, var(--gray-50), #fff);
  border: 1px solid var(--gray-100);
}
.scenario-box:nth-child(1) { border-color: #bbf7d0; background: linear-gradient(180deg, var(--green-bg), #fff); }
.scenario-box:nth-child(2) { border-color: #bfdbfe; background: linear-gradient(180deg, #eff6ff, #fff); }
.scenario-box:nth-child(3) { border-color: #ddd6fe; background: linear-gradient(180deg, #f5f3ff, #fff); }
.scenario-icon { font-size: 20px; margin-bottom: 8px; }
.scenario-title { font-size: 13px; font-weight: 700; color: var(--gray-800); margin-bottom: 12px; }
.scenario-row { margin-bottom: 10px; }
.scenario-row-label { font-size: 11px; color: var(--gray-500); }
.scenario-row-value { font-size: 18px; font-weight: 700; color: var(--gray-900); }
.scenario-row-value.negative { color: var(--red); }
.scenario-impact { font-size: 13px; font-weight: 600; color: var(--red); }

/* === History === */
.history-header {
  display: flex; justify-content: space-between; align-items: center;
}
.history-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--gray-50);
  margin-bottom: 8px;
  transition: background .2s;
}
.history-item:hover { background: var(--gray-100); }
.history-left { display: flex; align-items: center; gap: 12px; }
.history-emoji { font-size: 18px; }
.history-name { font-weight: 600; color: var(--gray-800); }
.history-date { font-size: 11px; color: var(--gray-400); }
.history-price { font-weight: 700; color: var(--gray-700); }

/* === Modal === */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  width: 100%; max-width: 600px;
  box-shadow: var(--shadow-lg);
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-title { font-size: 20px; font-weight: 700; }
.modal-close {
  width: 32px; height: 32px; border: none; border-radius: 8px;
  background: var(--gray-100); color: var(--gray-500); font-size: 16px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.modal-close:hover { background: var(--gray-200); }

.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare-table th {
  text-align: left; padding: 10px 12px;
  border-bottom: 1.5px solid var(--gray-200);
  font-weight: 700; color: var(--gray-800);
}
.compare-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-100);
}
.compare-table td:first-child { color: var(--gray-500); font-weight: 400; }
.compare-table td:not(:first-child) { font-weight: 600; color: var(--gray-800); }
.compare-table td.negative { color: var(--red); }

/* === Footer === */
.footer {
  text-align: center; padding: 32px 16px;
  font-size: 13px; color: var(--gray-400);
  border-top: 1px solid var(--gray-100);
}

/* === Responsive === */
@media (max-width: 768px) {
  .form-grid { grid-template-columns: 1fr; gap: 24px; }
  .installment-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 28px; }
  .result-price { font-size: 26px; }
  .worktime-value { font-size: 26px; }
  .field-row { grid-template-columns: 1fr; }
  .card { padding: 20px; }
}
@media (max-width: 480px) {
  .installment-grid { grid-template-columns: 1fr; }
  .worktime-grid { grid-template-columns: 1fr; }
  .goal-grid { grid-template-columns: 1fr; }
}