/* ==========================================================================
   MomDid — Design System CSS
   Hotel Reliability & Loss Intelligence
   ========================================================================== */

:root {
  /* Core palette */
  --momdid-carbon: #171b1a;
  --momdid-linen: #f3f0e8;
  --momdid-white: #ffffff;
  --momdid-sage: #5d6662;
  --momdid-mist: #d9dfda;

  /* Semantic */
  --momdid-resolved: #2f6b57;
  --momdid-resolved-soft: #e6efea;
  --momdid-attention: #8a632a;
  --momdid-attention-soft: #f4ecde;
  --momdid-critical: #994c45;
  --momdid-critical-soft: #f5e9e7;
  --momdid-info: #456978;
  --momdid-info-soft: #e8eff1;

  --color-bg: var(--momdid-linen);
  --color-surface: var(--momdid-white);
  --color-text: var(--momdid-carbon);
  --color-text-muted: var(--momdid-sage);
  --color-border: var(--momdid-mist);
  --color-focus: var(--momdid-resolved);

  /* Radius / shadow */
  --radius-control: 10px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --border-subtle: 1px solid var(--momdid-mist);
  --shadow-card: 0 16px 40px rgba(23, 27, 26, 0.06);

  /* Motion */
  --duration-fast: 160ms;
  --duration-base: 220ms;
  --duration-slow: 360ms;
  --ease-momdid: cubic-bezier(0.22, 1, 0.36, 1);

  /* Layout */
  --container-max: 1280px;
  --container-text: 720px;
  --space-section: clamp(64px, 9vw, 144px);
  --space-section-sm: clamp(48px, 6vw, 96px);
}

/* ==========================================================================
   Reset
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Manrope", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

button {
  font-family: inherit;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  background: var(--momdid-carbon);
  color: var(--momdid-linen);
  padding: 12px 20px;
  border-radius: var(--radius-control);
  z-index: 1000;
  transition: top var(--duration-base) var(--ease-momdid);
}

.skip-link:focus {
  top: 16px;
}

/* ==========================================================================
   Typography
   ========================================================================== */

.display {
  font-size: clamp(3.25rem, 6.4vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  font-weight: 600;
}

h1,
.h1 {
  font-size: clamp(2.75rem, 5vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 600;
}

h2,
.h2 {
  font-size: clamp(2rem, 3.5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 600;
}

h3,
.h3 {
  font-size: clamp(1.375rem, 2vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.body-lg {
  font-size: clamp(1.125rem, 1.5vw, 1.375rem);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.body {
  font-size: 1rem;
  line-height: 1.65;
}

.eyebrow {
  font-size: 0.75rem;
  line-height: 1.2;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-text-muted);
}

.text-container {
  max-width: 65ch;
}

.tabular {
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 48px;
  }
}

@media (min-width: 1100px) {
  .container {
    padding: 0 72px;
  }
}

.section {
  padding: var(--space-section) 0;
}

.section--sm {
  padding: var(--space-section-sm) 0;
}

.section-header {
  max-width: var(--container-text);
  margin-bottom: 48px;
}

.section-header + .section-header {
  margin-top: 0;
}

.section--carbon {
  background: var(--momdid-carbon);
  color: var(--momdid-linen);
}

.section--carbon .eyebrow {
  color: var(--momdid-mist);
}

.section--white {
  background: var(--momdid-white);
}

.divider {
  border: 0;
  border-top: var(--border-subtle);
  margin: 0;
}

.grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: var(--border-subtle);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.momdid-brand-link {
  display: inline-flex;
  align-items: center;
  color: var(--momdid-carbon);
}

.momdid-wordmark {
  display: block;
  max-width: 100%;
  height: auto;
  width: clamp(140px, 13vw, 180px);
  aspect-ratio: 1519 / 291;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 900px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-text);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-momdid);
}

.nav-links a:hover {
  border-color: var(--momdid-sage);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--color-text-muted);
  border: var(--border-subtle);
  border-radius: var(--radius-control);
  padding: 8px 12px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: var(--border-subtle);
  border-radius: var(--radius-control);
  cursor: pointer;
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 24px;
  border-top: var(--border-subtle);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
  max-height: calc(100vh - 76px);
  overflow-y: auto;
  z-index: 100;
}

@media (min-width: 768px) {
  .mobile-menu {
    padding-left: 48px;
    padding-right: 48px;
  }
}

.mobile-menu.is-open {
  display: flex;
}

@media (min-width: 900px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu a {
  padding: 12px 4px;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  border-bottom: var(--border-subtle);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 12px 24px;
  border-radius: var(--radius-control);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--duration-base) var(--ease-momdid),
    color var(--duration-base) var(--ease-momdid),
    border-color var(--duration-base) var(--ease-momdid),
    transform var(--duration-fast) var(--ease-momdid);
}

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

.btn--primary {
  background: var(--momdid-carbon);
  color: var(--momdid-linen);
}

.btn--primary:hover {
  background: #262c2a;
}

.btn--secondary {
  background: transparent;
  color: var(--momdid-carbon);
  border-color: var(--momdid-mist);
}

.btn--secondary:hover {
  border-color: var(--momdid-sage);
}

.btn--on-carbon {
  background: var(--momdid-linen);
  color: var(--momdid-carbon);
}

.btn--on-carbon:hover {
  background: var(--momdid-white);
}

.btn--on-carbon.btn--secondary {
  background: transparent;
  color: var(--momdid-linen);
  border-color: rgba(243, 240, 232, 0.3);
}

.btn--on-carbon.btn--secondary:hover {
  border-color: var(--momdid-linen);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  color: var(--color-text);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 40px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding: clamp(56px, 8vw, 96px) 0 var(--space-section-sm);
}

.hero-content {
  max-width: 820px;
}

.hero .eyebrow {
  margin-bottom: 20px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero .body-lg {
  max-width: 620px;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--color-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 32px;
}

.card--linen {
  background: var(--momdid-linen);
}

.card h3 {
  margin-bottom: 12px;
}

.card p {
  color: var(--color-text-muted);
}

.card-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 20px;
  color: var(--momdid-carbon);
}

/* Numbered problem list */
.problem-list {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  overflow: hidden;
}

@media (min-width: 768px) {
  .problem-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.problem-item {
  background: var(--color-surface);
  padding: 32px;
}

.problem-item .index {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.problem-item h3 {
  margin-bottom: 10px;
}

.problem-item p {
  color: var(--color-text-muted);
}

/* ==========================================================================
   How it works — process steps
   ========================================================================== */

.process {
  display: grid;
  gap: 32px;
}

@media (min-width: 900px) {
  .process {
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
  }
}

.process-step {
  position: relative;
  padding-top: 24px;
  border-top: 2px solid var(--momdid-carbon);
}

@media (min-width: 900px) {
  .process-step {
    padding-right: 20px;
  }
}

.process-step .step-number {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  display: block;
}

.process-step h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.process-step p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ==========================================================================
   Status badges / tags
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge--resolved {
  background: var(--momdid-resolved-soft);
  color: var(--momdid-resolved);
}

.badge--attention {
  background: var(--momdid-attention-soft);
  color: var(--momdid-attention);
}

.badge--critical {
  background: var(--momdid-critical-soft);
  color: var(--momdid-critical);
}

.badge--info {
  background: var(--momdid-info-soft);
  color: var(--momdid-info);
}

.badge--illustrative {
  background: var(--momdid-mist);
  color: var(--momdid-carbon);
}

/* ==========================================================================
   Management view mockup
   ========================================================================== */

.mockup {
  background: var(--color-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: var(--border-subtle);
}

.mockup-header .eyebrow {
  margin: 0;
}

.mockup-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border: var(--border-subtle);
  border-radius: 100px;
  padding: 4px 12px;
}

.mockup-body {
  padding: 8px 0;
}

.mockup-row {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.8fr 1fr;
  gap: 16px;
  align-items: center;
  padding: 18px 28px;
  border-bottom: var(--border-subtle);
}

.mockup-row:last-child {
  border-bottom: none;
}

.mockup-row .cell-title {
  font-weight: 600;
  font-size: 0.9375rem;
}

.mockup-row .cell-meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.mockup-row .cell-number {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.mockup-row-header {
  display: none;
}

@media (min-width: 640px) {
  .mockup-row-header {
    display: grid;
    grid-template-columns: 1.6fr 0.8fr 0.8fr 1fr;
    gap: 16px;
    padding: 14px 28px;
    background: var(--momdid-linen);
    border-bottom: var(--border-subtle);
  }

  .mockup-row-header span {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
  }
}

.mockup-row {
  grid-template-columns: 1fr;
  gap: 6px;
}

@media (min-width: 640px) {
  .mockup-row {
    grid-template-columns: 1.6fr 0.8fr 0.8fr 1fr;
    gap: 16px;
  }
}

.mockup-footnote {
  padding: 16px 28px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  border-top: var(--border-subtle);
  background: var(--momdid-linen);
}

/* ==========================================================================
   Loss category bars (simple data viz, real illustrative data only)
   ========================================================================== */

.loss-bars {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.loss-bar-row {
  display: grid;
  grid-template-columns: 140px 1fr 64px;
  align-items: center;
  gap: 16px;
}

.loss-bar-row .label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.loss-bar-track {
  height: 10px;
  background: var(--momdid-mist);
  border-radius: 100px;
  overflow: hidden;
}

.loss-bar-fill {
  height: 100%;
  background: var(--momdid-carbon);
  border-radius: 100px;
}

.loss-bar-row .value {
  font-size: 0.875rem;
  font-weight: 600;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   Not-list (What MomDid is not)
   ========================================================================== */

.not-list {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .not-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.not-item {
  display: flex;
  gap: 14px;
  padding: 20px 0;
  border-top: var(--border-subtle);
}

.not-item svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--color-text-muted);
}

.not-item p {
  margin: 0;
}

/* ==========================================================================
   Form
   ========================================================================== */

.pilot-form {
  display: grid;
  gap: 20px;
  max-width: 560px;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  font-size: 0.875rem;
  font-weight: 600;
}

.form-row input,
.form-row textarea,
.form-row select {
  font-family: inherit;
  font-size: 1rem;
  padding: 12px 16px;
  border-radius: var(--radius-control);
  border: var(--border-subtle);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: 44px;
}

.form-row textarea {
  min-height: 120px;
  resize: vertical;
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.form-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  border-top: var(--border-subtle);
  padding-top: 16px;
  margin-top: 4px;
}

.form-status {
  font-size: 0.9375rem;
  padding: 12px 16px;
  border-radius: var(--radius-control);
  display: none;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-success {
  background: var(--momdid-resolved-soft);
  color: var(--momdid-resolved);
}

.form-status.is-error {
  background: var(--momdid-critical-soft);
  color: var(--momdid-critical);
}

/* ==========================================================================
   Final CTA
   ========================================================================== */

.final-cta {
  text-align: left;
}

.final-cta .h2 {
  max-width: 720px;
  margin-bottom: 20px;
}

.final-cta .body-lg {
  max-width: 560px;
  margin-bottom: 40px;
  color: var(--momdid-mist);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--momdid-carbon);
  color: var(--momdid-mist);
  padding: 56px 0 40px;
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(243, 240, 232, 0.14);
}

@media (min-width: 768px) {
  .footer-top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand .momdid-wordmark {
  width: 150px;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: rgba(243, 240, 232, 0.6);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 32px;
}

.footer-links a {
  text-decoration: none;
  color: var(--momdid-mist);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: var(--momdid-linen);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 24px;
  font-size: 0.8125rem;
  color: rgba(243, 240, 232, 0.5);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ==========================================================================
   Utility
   ========================================================================== */

.mt-0 { margin-top: 0; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[data-animate] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--duration-slow) var(--ease-momdid),
    transform var(--duration-slow) var(--ease-momdid);
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-animate] {
    opacity: 1;
    transform: none;
  }
}