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

:root {
  --bg: #f4f7fb;
  --bg-soft: #eef3f9;
  --surface: #ffffff;
  --surface-soft: #f7faff;
  --text: #1b2430;
  --muted: #5e6a79;
  --border: #d8e1ee;
  --primary: #138a72;
  --primary-strong: #0f6d5b;
  --accent: #2f80ed;
  --danger: #bf3f3f;
  --success: #1e7a4a;
  --shadow-sm: 0 6px 16px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 14px 30px rgba(17, 24, 39, 0.08);
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 9px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  color: var(--text);
  font-family: 'Plus Jakarta Sans', 'Noto Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  line-height: 1.58;
  background:
    radial-gradient(circle at 10% -10%, rgba(47, 128, 237, 0.12), transparent 35%),
    radial-gradient(circle at 90% 8%, rgba(19, 138, 114, 0.11), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, var(--bg) 34%, #f5f8fc 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(216, 225, 238, 0.85);
  background: rgba(248, 251, 255, 0.86);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.62rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.79rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 6px 16px rgba(47, 128, 237, 0.3);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 0.46rem 0.64rem;
  color: var(--text);
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  padding: 0.56rem 0.82rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.93rem;
  transition: all 0.22s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--border);
}

main {
  padding: 2.4rem 0 3.2rem;
}

.page-hero {
  margin-bottom: 1.5rem;
}

.page-hero h1 {
  margin: 0 0 0.58rem;
  letter-spacing: -0.02em;
  font-size: clamp(1.58rem, 2.6vw, 2.35rem);
  line-height: 1.2;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.34rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: #0e6f5d;
  background: #def4ee;
  border: 1px solid #cdece4;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card-grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: linear-gradient(180deg, #ffffff 0%, #fcfdff 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.04rem;
  box-shadow: var(--shadow-sm);
}

.card h2,
.card h3,
.card h4 {
  margin: 0 0 0.52rem;
  letter-spacing: -0.012em;
}

.card p {
  margin: 0;
}

.cta-row {
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.66rem;
}

.btn,
button,
input[type='submit'] {
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.69rem 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover,
button:hover,
input[type='submit']:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 10px 20px rgba(19, 138, 114, 0.24);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0f7a65, #0d6656);
}

.btn-secondary {
  color: var(--text);
  background: #fff;
  border-color: var(--border);
}

.btn-secondary:hover {
  box-shadow: var(--shadow-sm);
}

.form-card {
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.1rem;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.92rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.36rem;
}

.form-field label {
  font-size: 0.91rem;
  font-weight: 700;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.66rem 0.72rem;
  font: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: #9fc6ff;
  box-shadow: 0 0 0 4px rgba(47, 128, 237, 0.12);
}

.form-hint {
  color: var(--muted);
  font-size: 0.86rem;
}

.toggle-row {
  margin: 1.02rem 0;
  padding: 0.82rem;
  border-radius: var(--radius-sm);
  border: 1px dashed #c6d5ea;
  background: #f3f8ff;
}

.optional-fields {
  display: none;
  margin-top: 0.9rem;
}

.optional-fields.show {
  display: grid;
}

.metric {
  display: grid;
  gap: 0.24rem;
}

.metric-value {
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
}

.placeholder {
  min-height: 176px;
  border-radius: var(--radius-md);
  border: 1px dashed #c3d2e8;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted);
  background: linear-gradient(180deg, #f9fbff 0%, #f4f8ff 100%);
}

.history-list {
  display: grid;
  gap: 0.7rem;
}

.history-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.04);
  padding: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 0.8rem;
  flex-wrap: wrap;
}

.history-item strong {
  font-size: 0.9rem;
}

.progress-wrap {
  display: grid;
  gap: 0.5rem;
}

.progress-row {
  display: grid;
  grid-template-columns: 86px 1fr;
  align-items: center;
  gap: 0.5rem;
}

.progress-bar {
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: #e5edf7;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}

.faq-list,
.section-stack {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  padding: 0.88rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #fff;
}

.site-footer {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, #f4f7fb, #edf3fa);
}

.footer-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hidden {
  display: none !important;
}

.form-message {
  margin-bottom: 1rem;
  border-radius: var(--radius-sm);
  padding: 0.76rem 0.86rem;
  border: 1px solid var(--border);
  background: #f8fbff;
}

.form-message.error {
  border-color: #f0b5b5;
  background: #fff4f4;
  color: #8d2a2a;
}

.form-message ul {
  margin: 0.44rem 0 0;
  padding-left: 1rem;
}

.auth-panel {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.58rem;
}

.auth-user-text {
  white-space: nowrap;
  color: var(--muted);
  font-size: 0.86rem;
}

.status-message {
  margin: 0;
  font-size: 0.88rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.65rem;
  background: #f8fbff;
}

.status-message.info {
  color: var(--muted);
}

.status-message.success {
  color: var(--success);
  border-color: #bae4cd;
  background: #eefbf3;
}

.status-message.error {
  color: var(--danger);
  border-color: #efb6b6;
  background: #fff5f5;
}

.plan-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 0.72rem 0.82rem;
}

.plan-block h4 {
  margin: 0 0 0.52rem;
  font-size: 0.99rem;
}

.mini-list {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.28rem;
}

.inline-kcal {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--muted);
}

#historyContent canvas {
  width: 100% !important;
  height: 220px !important;
}

@media (max-width: 960px) {
  .card-grid.cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    padding: 0.74rem 1rem 1rem;
    border-bottom: 1px solid var(--border);
    background: rgba(248, 251, 255, 0.98);
    display: none;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-link {
    text-align: center;
    border: 1px solid var(--border);
    background: #fff;
  }

  .auth-panel {
    width: 100%;
    justify-content: space-between;
    margin-top: 0.5rem;
  }

  .auth-user-text {
    max-width: 56%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .card-grid.cols-2,
  .card-grid.cols-3,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding: 0.8rem 0;
  }
}