/* =========================================
   JabJab — Pediatric Vaccine Scheduler
   Design tokens follow .kiro/steering/DESIGN.md
   ========================================= */

:root {
  /* Colors */
  --color-primary: #00408b;
  --color-primary-hover: #003473;
  --color-primary-soft: rgba(0, 87, 184, 0.1);
  --color-primary-bg: rgba(0, 87, 184, 0.05);
  --color-primary-border: rgba(0, 64, 139, 0.2);
  --color-secondary: #6cf8bb;
  --color-secondary-soft: rgba(108, 248, 187, 0.3);
  --color-secondary-bg: rgba(108, 248, 187, 0.2);
  --color-secondary-text: #00714d;
  --color-secondary-text-strong: #006c49;
  --color-tertiary: #4446d2;
  --color-tertiary-soft: rgba(68, 70, 210, 0.1);
  --color-accent-blue-soft: #d3e4fe;
  --color-accent-blue-bg: #eff4ff;

  --color-text-strong: #0b1c30;
  --color-text: #424752;
  --color-text-muted: #727784;

  --color-border: #c2c6d4;
  --color-border-light: #e2e8f0;
  --color-border-dashed: #e5e7eb;
  --color-surface: #ffffff;
  --color-page: #f8f9ff;

  /* Spacing (8px unit) */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-8: 32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;
  --s-24: 96px;
  --s-32: 128px;

  /* Radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-pill: 9999px;

  /* Elevation */
  --shadow-card: 0 1px 1px rgba(0, 0, 0, 0.05);
  --shadow-overlay: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-modal: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-page);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-text-strong);
}

img {
  max-width: 100%;
  display: block;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.25;
  padding: 12px 20px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    transform 0.05s ease, box-shadow 0.15s ease;
  white-space: nowrap;
  min-height: 44px;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-overlay);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-accent-blue-bg);
  border-color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
}
.btn-ghost:hover {
  background: var(--color-accent-blue-bg);
}

.btn-danger-ghost {
  background: transparent;
  color: #b91c1c;
  border-color: transparent;
}
.btn-danger-ghost:hover {
  background: #fee2e2;
}

.btn-pill {
  border-radius: var(--r-pill);
  padding: 14px 28px;
  font-size: 15px;
}

.btn-sm {
  padding: 8px 14px;
  min-height: 32px;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.btn-block {
  width: 100%;
}

.btn .icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn .icon svg {
  width: 100%;
  height: 100%;
}

/* ========== Chips / Badges ========== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  line-height: 16px;
}

.chip-secure {
  background: var(--color-secondary);
  color: var(--color-secondary-text);
}

.chip-eyebrow {
  background: var(--color-secondary);
  color: var(--color-secondary-text);
  padding: 6px 16px;
}

.chip-on-track {
  background: var(--color-secondary-bg);
  color: var(--color-secondary-text);
}

.chip-administered {
  color: var(--color-secondary-text-strong);
  background: transparent;
  text-transform: uppercase;
  padding: 0;
}

.chip-due {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.chip-future {
  background: var(--color-border-light);
  color: var(--color-text-muted);
}

.chip-overdue {
  background: #fee2e2;
  color: #b91c1c;
}

.chip-optional {
  background: var(--color-tertiary-soft);
  color: var(--color-tertiary);
}

/* ========== Forms ========== */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--color-text);
}

.field-input,
.field-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-sm);
  background: #fff;
  color: var(--color-text-strong);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field-input:focus,
.field-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  border-width: 2px;
  padding: 11px 13px;
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.field-textarea {
  resize: vertical;
  min-height: 72px;
  line-height: 1.5;
}

/* ========== Landing Page ========== */

.landing {
  background: var(--color-page);
}

.topnav {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topnav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 22px;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  border-radius: 10px;
  color: var(--color-primary);
}

.logo-mark svg {
  width: 18px;
  height: 18px;
}

/* Hero */
.hero {
  position: relative;
  background: var(--color-page);
  overflow: hidden;
  padding: 96px 0;
}

.hero-blob {
  position: absolute;
  width: 384px;
  height: 384px;
  border-radius: 50%;
  filter: blur(32px);
  pointer-events: none;
}

.hero-blob.blue {
  background: var(--color-accent-blue-soft);
  opacity: 0.5;
  right: -128px;
  top: -128px;
}

.hero-blob.green {
  background: var(--color-secondary);
  opacity: 0.3;
  left: -128px;
  bottom: -128px;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.17;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-strong);
  margin: 0 0 24px;
}

.hero-lead {
  font-size: 18px;
  line-height: 1.55;
  color: var(--color-text);
  margin: 0 0 32px;
  max-width: 512px;
}

.hero-art {
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-modal);
  overflow: hidden;
  background: linear-gradient(180deg, #cfe4ee 0%, #b8d2dd 100%);
  height: 480px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-art-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: radial-gradient(
    ellipse at center,
    #cfe4ee 0%,
    #9bc2cf 70%,
    #7ba8b8 100%
  );
}

.hero-art-inner svg {
  width: 70%;
  height: auto;
  max-height: 80%;
}

.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 64, 139, 0.2),
    rgba(0, 64, 139, 0)
  );
  pointer-events: none;
}

/* Features */
.section {
  padding: 96px 0;
}

.section.white {
  background: #fff;
}

.section.tinted {
  background: var(--color-accent-blue-bg);
}

.section-head {
  text-align: center;
  margin-bottom: 64px;
}

.section-head h2 {
  font-size: 32px;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-strong);
  margin: 0 0 16px;
}

.section-head p {
  font-size: 18px;
  color: var(--color-text);
  margin: 0 auto;
  max-width: 672px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  grid-template-rows: auto auto;
  gap: 24px;
}

.feature {
  background: var(--color-page);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 240px;
}

.feature.span2 {
  grid-column: span 2;
}

@media (min-width: 1024px) {
  .feature.f2 {
    grid-column: 2 / span 1;
  }
  .feature.f3 {
    grid-column: 1 / span 1;
  }
  /* full grid layout matches Figma: 1+2 / 2+1 */
  .feature-grid {
    grid-template-columns: 1fr 2fr;
  }
  .feature.f1 {
    grid-column: 1;
    grid-row: 1;
  }
  .feature.f2 {
    grid-column: 2;
    grid-row: 1;
  }
  .feature.f3 {
    grid-column: 1 / span 2;
    grid-row: 2;
    /* split into 2/1 */
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    padding: 0;
    background: transparent;
    border: none;
    min-height: 0;
  }
  .feature.f3 > .feature-inner {
    background: var(--color-page);
    border: 1px solid var(--color-border);
    border-radius: var(--r-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  flex-shrink: 0;
}

.feature-icon.green {
  background: var(--color-secondary-soft);
  color: var(--color-secondary-text);
}

.feature-icon.indigo {
  background: var(--color-tertiary-soft);
  color: var(--color-tertiary);
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-strong);
  margin: 4px 0 0;
  line-height: 1.3;
}

.feature p {
  font-size: 15px;
  color: var(--color-text);
  margin: 0;
  line-height: 1.55;
}

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

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
  margin-bottom: 48px;
}

.steps::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-num {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  border: 4px solid var(--color-accent-blue-bg);
  box-shadow: var(--shadow-card);
}

.step.alt .step-num {
  background: var(--color-accent-blue-bg);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.step.muted .step-num {
  background: var(--color-accent-blue-bg);
  color: var(--color-primary);
  border-color: var(--color-border);
}

.step h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-strong);
  margin: 0 0 8px;
}

.step p {
  font-size: 15px;
  color: var(--color-text);
  margin: 0;
}

.cta-center {
  text-align: center;
}

/* Footer */
.footer {
  background: var(--color-accent-blue-soft);
  padding: 48px 40px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand {
  font-weight: 600;
  color: var(--color-primary);
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  opacity: 0.85;
}

.footer-meta {
  color: var(--color-text);
  font-size: 14px;
}

/* ========== App Page ========== */

.app-shell {
  display: grid;
  grid-template-columns: 256px 1fr;
  min-height: 100vh;
  background: var(--color-page);
}

.sidebar {
  background: var(--color-accent-blue-bg);
  border-right: 1px solid var(--color-border);
  padding: 32px 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-brand {
  padding: 0 24px 32px;
}

.sidebar-brand .brand-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}

.sidebar-brand .brand-tag {
  font-size: 13px;
  color: var(--color-text);
  margin-top: 4px;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0 16px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--r-sm);
  color: var(--color-text);
  font-size: 15px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: rgba(0, 87, 184, 0.08);
}

.nav-link.active {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 700;
  border-right: 4px solid var(--color-primary);
  padding-right: 12px;
}

.nav-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-foot {
  padding: 0 16px;
}

/* Main content */
.main {
  padding: 40px;
  max-width: 1280px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.page-header h2 {
  font-size: 30px;
  font-weight: 600;
  color: var(--color-text-strong);
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}

.page-header .lead {
  color: var(--color-text);
  margin: 0;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Card */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.card-soft {
  background: var(--color-primary-bg);
  border: 1px solid var(--color-primary-border);
}

/* Profile card */
.profile-card {
  display: flex;
  align-items: center;
  gap: 24px;
}

.profile-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.profile-avatar svg {
  width: 30px;
  height: 30px;
}

.profile-info h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-strong);
  margin: 0 0 4px;
}

.profile-meta {
  font-size: 14px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.profile-meta svg {
  width: 14px;
  height: 14px;
}

.profile-status {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Profile switcher (select) */
.profile-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
}

.profile-switcher select {
  background: #fff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  font-weight: 600;
  color: var(--color-text-strong);
  min-width: 180px;
  cursor: pointer;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  gap: 0;
}

.tab {
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab:hover {
  color: var(--color-primary);
}

.tab.active {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.timeline-group {
  position: relative;
  padding-left: 32px;
}

.timeline-group::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-group.future::before {
  background: transparent;
  border-left: 2px dashed var(--color-border-dashed);
  width: 0;
}

.timeline-group:last-child::before {
  display: none;
}

.timeline-node {
  position: absolute;
  left: 0;
  top: 6px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-border-light);
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.timeline-node svg {
  width: 12px;
  height: 12px;
}

.timeline-node.done {
  background: var(--color-secondary);
  box-shadow: 0 0 0 1px var(--color-secondary);
  color: var(--color-secondary-text-strong);
}

.timeline-node.upcoming {
  background: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
  color: #fff;
}

.timeline-node.future {
  background: var(--color-accent-blue-soft);
  box-shadow: 0 0 0 1px var(--color-border);
  color: var(--color-primary);
}

.group-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-strong);
  margin: 0 0 16px;
  letter-spacing: 0.01em;
}

.timeline-group.done .group-title {
  color: var(--color-text-strong);
}
.timeline-group.upcoming .group-title {
  color: var(--color-primary);
}
.timeline-group.future .group-title {
  color: var(--color-text-muted);
}

.dose-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Dose card */
.dose {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dose.done {
  opacity: 0.75;
}

.dose.upcoming {
  background: var(--color-primary-bg);
  border-color: var(--color-primary-border);
  opacity: 1;
}

.dose-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.dose-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-strong);
  margin: 0 0 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.dose-meta {
  font-size: 13px;
  color: var(--color-text);
  margin: 0;
}

.dose-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Checkbox */
.check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  color: var(--color-text);
}

.check input {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-border);
  border-radius: 5px;
  background: #fff;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.check input:checked {
  background: var(--color-secondary-text);
  border-color: var(--color-secondary-text);
}

.check input:checked::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'><path d='M13.485 4.0a1 1 0 0 1 .015 1.414L6.7 12.213a1 1 0 0 1-1.414 0L2.515 9.443a1 1 0 1 1 1.414-1.414l2.064 2.064 6.078-6.078a1 1 0 0 1 1.414-0.015z'/></svg>")
    center/14px no-repeat;
}

/* Notes */
.notes-toggle {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
}

.notes-toggle:hover {
  text-decoration: underline;
}

.dose-extra {
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.dose-extra[hidden] {
  display: none !important;
}

.notes-input {
  width: 100%;
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  font-size: 13px;
  color: var(--color-text-strong);
  resize: vertical;
  min-height: 60px;
}

.notes-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}

.date-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.date-row label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.date-row input {
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-sm);
  padding: 6px 10px;
  font-size: 13px;
}

/* Empty state */
.empty {
  background: #fff;
  border: 1px dashed var(--color-border);
  border-radius: var(--r-md);
  padding: 32px;
  text-align: center;
  color: var(--color-text);
}

.empty h3 {
  margin: 0 0 8px;
  color: var(--color-text-strong);
}

/* ========== Modal ========== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 28, 48, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background: #fff;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-modal);
  width: 100%;
  max-width: 460px;
  padding: 28px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-strong);
}

.modal p.modal-sub {
  margin: 0 0 20px;
  color: var(--color-text);
  font-size: 14px;
}

.modal-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.modal-list label {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.modal-list label:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-bg);
}

.modal-list input {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ========== Onboarding modal ========== */
.modal-form {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-text-strong);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--r-sm);
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
  z-index: 200;
  box-shadow: var(--shadow-modal);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .hero {
    padding: 56px 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero-art {
    height: 320px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature.span2,
  .feature.f1,
  .feature.f2,
  .feature.f3 {
    grid-column: auto !important;
    grid-row: auto !important;
  }
  .feature.f3 {
    display: flex !important;
  }
  .feature.f3 > .feature-inner {
    padding: 0;
    border: none;
    background: transparent;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .steps::before {
    display: none;
  }
  .section {
    padding: 56px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .container {
    padding: 0 20px;
  }
  .topnav-inner {
    padding: 14px 20px;
  }
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    height: auto;
    flex-direction: row;
    align-items: center;
    padding: 16px;
    gap: 12px;
    overflow-x: auto;
  }
  .sidebar-brand {
    padding: 0 8px;
  }
  .sidebar-nav {
    flex-direction: row;
    flex: 1;
    padding: 0;
    gap: 4px;
    overflow-x: auto;
  }
  .nav-link {
    padding: 8px 12px;
    white-space: nowrap;
  }
  .nav-link.active {
    border-right: none;
    border-bottom: 3px solid var(--color-primary);
    padding-bottom: 5px;
  }
  .sidebar-foot {
    padding: 0;
    flex-shrink: 0;
  }
  .sidebar-foot .btn {
    padding: 8px 14px;
  }
  .main {
    padding: 24px 16px;
  }
  .page-header h2 {
    font-size: 24px;
  }
  .profile-card {
    flex-wrap: wrap;
  }
  .profile-status {
    margin-left: 0;
  }
}

@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .dose-row {
    flex-direction: column;
    align-items: stretch;
  }
  .dose-actions {
    justify-content: flex-start;
  }
}