/* ============================================================
   InterAlign.org — Phase 0 Holding Page
   Plain CSS, no build step.
   Phase 1 migrates to Astro + Tailwind configured as brand tokens.
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:       #1A1410;
  --text:     #EDE8DF;
  --gold:     #C8964B;
  --amber:    #E0A647;
  --dim:      #8A7B72;

  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
}

html {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100dvh;
}

/* --- Page grid -------------------------------------------- */

.page {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: clamp(1.75rem, 5vw, 3.5rem) clamp(1.5rem, 7vw, 5rem);
  max-width: 56rem;
  margin: 0 auto;
}

/* --- Header ----------------------------------------------- */

.site-header {
  display: flex;
  align-items: flex-start;
}

.site-header a {
  display: inline-block;
  line-height: 0;
}

.logo {
  width: clamp(140px, 22vw, 220px);
  height: auto;
  display: block;
}

/* --- Main ------------------------------------------------- */

.main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 4vw, 3rem) 0;
  animation: emerge 1.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes emerge {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Coming-soon label */
.label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: clamp(1rem, 2vw, 1.5rem);
}

/* Book title */
.title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 9.5vw, 7rem);
  font-weight: 700;
  font-variation-settings: 'opsz' 144, 'SOFT' 15, 'WONK' 0;
  line-height: 0.97;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: clamp(0.625rem, 1.25vw, 1rem);
}

.title-line {
  display: block;
}

.title-line--for {
  /*
    "for Healthcare" reads as subordinate to "Design Thinking" —
    slightly lighter weight gives the intended hierarchy without
    two separate type sizes.
  */
  font-weight: 400;
  font-variation-settings: 'opsz' 144, 'SOFT' 30, 'WONK' 0;
  color: var(--text);
}

/* Subtitle */
.subtitle {
  font-family: var(--font-body);
  font-size: clamp(0.75rem, 1.4vw, 0.9375rem);
  font-weight: 300;
  color: var(--dim);
  letter-spacing: 0.01em;
  margin-bottom: clamp(1.25rem, 2.5vw, 2rem);
}

/* Publication block */
.publication {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.foreword {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1rem, 2.2vw, 1.4375rem);
  font-weight: 400;
  font-variation-settings: 'opsz' 18, 'SOFT' 0;
  color: var(--gold);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.imprint {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--dim);
  letter-spacing: 0.06em;
}

/* --- Email capture ---------------------------------------- */

.capture {
  max-width: 26rem;
}

.form {
  display: flex;
  gap: 0;
  margin-bottom: 0.75rem;
}

.form input[type="email"] {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 1px solid #3A3028;
  border-right: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 300;
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s ease;
  -webkit-appearance: none;
}

.form input[type="email"]::placeholder {
  color: var(--dim);
}

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

.form button {
  flex-shrink: 0;
  background: var(--gold);
  border: 1px solid var(--gold);
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.25rem;
  cursor: pointer;
  transition: background-color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}

.form button:hover:not(:disabled) {
  background: var(--amber);
  border-color: var(--amber);
}

.form button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-note {
  font-size: 0.6875rem;
  color: var(--dim);
  letter-spacing: 0.02em;
}

.form-status {
  font-family: var(--font-body);
  font-size: 0.875rem;
  min-height: 1.5em;
  margin-bottom: 0.375rem;
}

.form-status.success {
  color: var(--gold);
}

.form-status.error {
  color: #c07060;
}

/* --- Footer ----------------------------------------------- */

.site-footer {
  padding-top: 1.5rem;
}

.site-footer p {
  font-size: 0.6875rem;
  color: var(--dim);
  letter-spacing: 0.04em;
}

/* --- Screen-reader only ----------------------------------- */

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

/* --- Responsive ------------------------------------------- */

@media (max-width: 480px) {
  .form {
    flex-direction: column;
  }

  .form input[type="email"] {
    border-right: 1px solid #3A3028;
    border-bottom: none;
  }

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

  .form button {
    width: 100%;
    text-align: center;
  }
}

/* --- Reduced motion --------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .main {
    animation: none;
  }

  .form button,
  .form input[type="email"] {
    transition: none;
  }
}