/* ==========================================================================
   Auxo Health — Premium Healthcare Intelligence
   Brand CSS — Calm, Assured, Precise, Elevated, Human
   ========================================================================== */

/* ---------- Custom Properties ---------- */
:root {
  /* Brand Colors */
  --midnight: #0B1420;
  --carbon: #18212B;
  --paper: #F7F3EC;
  --stone: #E8E2D8;
  --champagne: #B79A72;
  --brass: #9E8158;
  --sage: #7D9485;
  --slate: #637081;

  /* Typography */
  --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing scale (8px base) */
  --space-1: 0.25rem;   /* 4 */
  --space-2: 0.5rem;    /* 8 */
  --space-3: 0.75rem;   /* 12 */
  --space-4: 1rem;      /* 16 */
  --space-5: 1.5rem;    /* 24 */
  --space-6: 2rem;      /* 32 */
  --space-7: 2.5rem;    /* 40 */
  --space-8: 3rem;      /* 48 */
  --space-9: 4rem;      /* 64 */
  --space-10: 5rem;     /* 80 */
  --space-11: 6rem;     /* 96 */
  --space-12: 8rem;     /* 128 */
  --space-13: 10rem;    /* 160 */

  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.75rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-slow: 800ms;
  --duration-base: 500ms;
  --duration-fast: 300ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--midnight);
  background-color: var(--paper);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

input {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background-color: var(--champagne);
  color: var(--midnight);
}

/* ---------- Container ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-9);
  }
}

/* ---------- Fade-in Animation ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Section Labels ---------- */
.section-label {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: var(--space-5);
}

.section-label--light {
  color: var(--champagne);
}

.section-headline {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-3xl);
  line-height: 1.2;
  color: var(--midnight);
  margin-bottom: var(--space-8);
  letter-spacing: -0.01em;
}

.section-headline--light {
  color: var(--paper);
}

@media (min-width: 768px) {
  .section-headline {
    font-size: var(--text-4xl);
  }
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(11, 20, 32, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(183, 154, 114, 0.1);
  transition: background-color var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (min-width: 768px) {
  .nav-inner {
    padding: 0 var(--space-9);
  }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-auxo {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--text-md);
  letter-spacing: 0.15em;
  color: var(--paper);
}

.nav-rule {
  width: 1px;
  height: 14px;
  background-color: var(--champagne);
}

.nav-health {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--paper);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-7);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--slate);
  letter-spacing: 0.02em;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-links a:hover {
  color: var(--paper);
}

.nav-cta {
  font-weight: 500 !important;
  color: var(--champagne) !important;
  border: 1px solid rgba(183, 154, 114, 0.3);
  padding: var(--space-2) var(--space-5);
  border-radius: 2px;
  transition: all var(--duration-fast) var(--ease-out) !important;
}

.nav-cta:hover {
  background-color: rgba(183, 154, 114, 0.1);
  border-color: var(--champagne);
}

/* Mobile nav toggle */
.nav-mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-2);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .nav-mobile-toggle {
    display: none;
  }
}

.nav-mobile-toggle span {
  width: 20px;
  height: 1.5px;
  background-color: var(--paper);
  transition: all var(--duration-fast) var(--ease-out);
  display: block;
}

.nav-mobile-toggle.is-open span:first-child {
  transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav-mobile-toggle.is-open span:last-child {
  transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* Mobile dropdown */
.nav-mobile-menu {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(11, 20, 32, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-5);
  border-bottom: 1px solid rgba(183, 154, 114, 0.1);
}

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

.nav-mobile-menu a {
  font-size: var(--text-base);
  color: var(--slate);
  padding: var(--space-2) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-mobile-menu a:hover {
  color: var(--paper);
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  background-color: var(--midnight);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 40%, rgba(183, 154, 114, 0.04) 0%, transparent 100%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
  width: 100%;
}

@media (min-width: 768px) {
  .hero-inner {
    padding: var(--space-13) var(--space-9);
  }
}

.hero-content {
  max-width: 720px;
}

.hero-mark-wrapper {
  margin-bottom: var(--space-8);
}

.hero-mark {
  opacity: 0.9;
}

.hero-headline {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-4xl);
  line-height: 1.1;
  color: var(--paper);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .hero-headline {
    font-size: var(--text-5xl);
  }
}

@media (min-width: 1024px) {
  .hero-headline {
    font-size: var(--text-6xl);
  }
}

.hero-rule {
  width: 48px;
  height: 1px;
  background-color: var(--champagne);
  margin-bottom: var(--space-6);
}

.hero-sub {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.8;
  color: var(--slate);
  max-width: 520px;
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .hero-sub {
    font-size: var(--text-lg);
  }
}

.hero-gradient-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent 0%, var(--paper) 100%);
  pointer-events: none;
}

/* ---------- Primary Button ---------- */
.btn-primary {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--midnight);
  background-color: var(--champagne);
  padding: var(--space-4) var(--space-7);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-primary:hover {
  background-color: var(--brass);
  color: var(--paper);
}

/* ==========================================================================
   VALUE PROPOSITION
   ========================================================================== */

.value-prop {
  background-color: var(--paper);
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .value-prop {
    padding: var(--space-13) 0;
  }
}

.value-prop-inner {
  max-width: 680px;
}

.value-statement {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-2xl);
  line-height: 1.4;
  color: var(--midnight);
  margin-bottom: var(--space-7);
}

@media (min-width: 768px) {
  .value-statement {
    font-size: var(--text-3xl);
    line-height: 1.35;
  }
}

.value-rule {
  width: 48px;
  height: 1px;
  background-color: var(--brass);
  margin: var(--space-8) 0;
}

.value-coda {
  font-family: var(--font-serif);
  font-weight: 300;
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--champagne);
}

@media (min-width: 768px) {
  .value-coda {
    font-size: var(--text-2xl);
  }
}

/* ==========================================================================
   WHAT WE DO
   ========================================================================== */

.what-we-do {
  background-color: var(--stone);
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .what-we-do {
    padding: var(--space-13) 0;
  }
}

.offerings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
}

@media (min-width: 768px) {
  .offerings-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-9);
  }
}

.offering-card {
  background-color: var(--paper);
  padding: var(--space-6);
  border-radius: 2px;
  border: 1px solid rgba(158, 129, 88, 0.12);
}

@media (min-width: 768px) {
  .offering-card {
    padding: var(--space-8);
  }
}

.offering-icon {
  margin-bottom: var(--space-6);
}

.offering-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--text-xl);
  letter-spacing: 0.01em;
  color: var(--midnight);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .offering-title {
    font-size: var(--text-2xl);
  }
}

.offering-rule {
  width: 32px;
  height: 1px;
  background-color: var(--champagne);
  margin-bottom: var(--space-5);
}

.offering-desc {
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--slate);
  font-weight: 300;
}

@media (min-width: 768px) {
  .offering-desc {
    font-size: var(--text-base);
  }
}

/* ==========================================================================
   HOW IT WORKS
   ========================================================================== */

.how-it-works {
  background-color: var(--paper);
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .how-it-works {
    padding: var(--space-13) 0;
  }
}

.steps-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
}

@media (min-width: 768px) {
  .steps-grid {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
  }
}

.step {
  flex: 1;
}

.step .step-icon {
  display: inline-block;
}

@media (min-width: 768px) {
  .step {
    padding: 0 var(--space-7);
  }
  .step:first-child {
    padding-left: 0;
  }
  .step:last-child {
    padding-right: 0;
  }
}

.step-number {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: var(--text-3xl);
  color: var(--stone);
  margin-bottom: var(--space-4);
  line-height: 1;
}

.step-icon {
  margin-bottom: var(--space-5);
}

.step-title {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--text-xl);
  color: var(--midnight);
  margin-bottom: var(--space-3);
}

.step-desc {
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--slate);
  font-weight: 300;
}

.step-divider {
  display: none;
}

@media (min-width: 768px) {
  .step-divider {
    display: block;
    width: 1px;
    min-height: 160px;
    background: linear-gradient(to bottom, transparent, var(--brass), transparent);
    align-self: stretch;
    flex-shrink: 0;
  }
}

/* ==========================================================================
   TRUST / SOCIAL PROOF
   ========================================================================== */

.trust {
  position: relative;
  background-color: var(--midnight);
  padding: var(--space-12) 0;
  overflow: hidden;
}

@media (min-width: 768px) {
  .trust {
    padding: var(--space-13) 0;
  }
}

.trust-inner {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.trust-rule {
  width: 48px;
  height: 1px;
  background-color: var(--champagne);
  margin: 0 auto var(--space-9);
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-10);
}

@media (min-width: 600px) {
  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.trust-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.trust-number {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-3xl);
  color: var(--champagne);
  letter-spacing: 0.02em;
}

.trust-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--slate);
}

.trust-quote blockquote {
  border: none;
  padding: var(--space-8);
  position: relative;
}

.trust-quote blockquote::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 1px;
  background-color: rgba(183, 154, 114, 0.3);
}

.trust-quote p {
  font-family: var(--font-serif);
  font-weight: 300;
  font-style: italic;
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--slate);
}

@media (min-width: 768px) {
  .trust-quote p {
    font-size: var(--text-xl);
  }
}

/* ==========================================================================
   WAITLIST / CTA
   ========================================================================== */

.waitlist {
  background-color: var(--stone);
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .waitlist {
    padding: var(--space-13) 0;
  }
}

.waitlist-inner {
  max-width: 560px;
}

.waitlist-sub {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--slate);
  font-weight: 300;
  margin-bottom: var(--space-8);
}

.waitlist-form {
  margin-bottom: var(--space-6);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .form-group {
    flex-direction: row;
  }
}

.form-group input[type="email"] {
  flex: 1;
  padding: var(--space-4) var(--space-5);
  border: 1px solid rgba(158, 129, 88, 0.2);
  border-radius: 2px;
  background-color: var(--paper);
  font-size: var(--text-sm);
  color: var(--midnight);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.form-group input[type="email"]::placeholder {
  color: var(--slate);
  font-weight: 300;
}

.form-group input[type="email"]:focus {
  border-color: var(--champagne);
}

.form-group .btn-primary {
  white-space: nowrap;
  padding: var(--space-4) var(--space-6);
}

.form-note {
  font-size: var(--text-xs);
  color: var(--slate);
  margin-top: var(--space-3);
  font-weight: 300;
}

.waitlist-success {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.waitlist-success.is-visible {
  display: flex;
}

.waitlist-success p {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-lg);
  color: var(--sage);
}

/* Loading state: dim the form and signal that work is in progress. */
.waitlist-form.is-loading {
  opacity: 0.6;
  pointer-events: none;
}

.waitlist-form.is-loading .btn-primary {
  cursor: progress;
}

/* Error state: mirrors the success layout in a measured brass tone. */
.waitlist-error {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.waitlist-error.is-visible {
  display: flex;
}

.waitlist-error p {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: var(--text-lg);
  color: var(--brass);
}

.waitlist-error a {
  color: var(--brass);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background-color: var(--carbon);
  padding: var(--space-10) 0 var(--space-8);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-9);
  padding-bottom: var(--space-9);
  border-bottom: 1px solid rgba(183, 154, 114, 0.1);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-auxo {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: var(--text-md);
  letter-spacing: 0.15em;
  color: var(--paper);
}

.footer-rule {
  width: 1px;
  height: 14px;
  background-color: var(--champagne);
}

.footer-health {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--paper);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--slate);
  font-weight: 300;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: var(--space-10);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--champagne);
  margin-bottom: var(--space-1);
}

.footer-col a {
  font-size: var(--text-sm);
  color: var(--slate);
  font-weight: 300;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-col a:hover {
  color: var(--paper);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-6);
}

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

.footer-bottom p {
  font-size: var(--text-xs);
  color: var(--slate);
  font-weight: 300;
}

.footer-attribution {
  font-size: var(--text-xs);
  color: var(--slate);
  font-weight: 300;
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.footer-attribution:hover {
  opacity: 1;
  color: var(--slate);
}

/* ---------- Large Screen Refinements ---------- */
@media (min-width: 1440px) {
  :root {
    --max-width: 1280px;
  }

  .hero-headline {
    font-size: 5rem;
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ---------- Focus Styles ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 2px;
}

/* ---------- Subtle grain overlay on dark sections ---------- */
.hero::after,
.trust::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

.hero > *,
.trust > * {
  position: relative;
  z-index: 1;
}