/* =========================================================================
   Delta Foundry · Innovation Mandate Assessment
   Editorial landing page styles
   ========================================================================= */

@import url('tokens.css');

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: var(--leading-body);
  color: var(--df-ink-900);
  background: var(--df-bone-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ---------- Color grounds ---------- */
.dark {
  background: var(--df-ink-900);
  color: var(--df-bone-100);
}
.light {
  background: var(--df-bone-100);
  color: var(--df-ink-900);
}

/* Soft paper grain on light grounds */
.light {
  background-color: var(--df-bone-100);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(138, 90, 26, 0.04) 0%, transparent 45%),
    radial-gradient(circle at 88% 70%, rgba(11, 11, 11, 0.025) 0%, transparent 50%);
}

/* ---------- Section frame: poster rule + side-rail labels ---------- */
section {
  position: relative;
  padding: clamp(80px, 10vw, 140px) clamp(32px, 6vw, 96px);
  border-top: 1px solid var(--df-ink-900);
}
section.dark {
  border-top-color: var(--df-amber-500);
}
section:first-child { border-top: none; }

/* Editorial section number — left rail (mono caption) */
section::before {
  content: attr(data-section);
  position: absolute;
  top: 32px;
  left: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--df-ink-300);
  pointer-events: none;
}
.dark::before { color: var(--df-ink-500); }

/* ---------- Headings — DM Serif Display ---------- */
h1, h2, h3 {
  font-family: var(--font-editorial);
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: 1.05;
  color: inherit;
}
h2 { font-size: clamp(34px, 4.5vw, 64px); line-height: 1.08; }
h3 { font-size: 13px; }

p { color: inherit; }

/* =========================================================================
   SECTION 1 — HERO
   ========================================================================= */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(80px, 12vw, 160px);
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: clamp(40px, 5vw, 64px);
}
.hero::before { content: "— § 01 / OVERTURE"; color: var(--df-amber-500); }

.hero-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(244, 184, 96, 0.25);
  padding-bottom: 28px;
}
.logo {
  height: 72px;
  width: auto;
  object-fit: contain;
}
.geo-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--df-amber-500);
}

.hero-content {
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-headline {
  font-family: var(--font-editorial);
  font-weight: 400;
  font-size: clamp(32px, 4.6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--df-bone-100);
  max-width: 26ch;
  margin-bottom: 56px;
}
.stat-line {
  display: block;
  text-wrap: balance;
}
.stat-line + .stat-line {
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid rgba(244, 184, 96, 0.25);
}
.stat-emphasis {
  color: var(--df-amber-500);
  font-style: italic;
}

.hero-subheadline {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--df-amber-500);
  max-width: 56ch;
  border-left: 2px solid var(--df-amber-500);
  padding-left: 20px;
}
.hero-subheadline::before {
  content: "— SOURCE / ";
  color: var(--df-ink-300);
}

.hero-image-placeholder {
  background: var(--df-ink-800);
  border: 1px solid rgba(244, 184, 96, 0.18);
  height: clamp(280px, 38vh, 460px);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--df-ink-300);
  position: relative;
}
.hero-image-placeholder::before {
  content: "PLATE I — ARCHITECTURE FIELD STUDY";
  position: absolute;
  top: 20px;
  left: 24px;
  color: var(--df-amber-500);
}
.hero-image-placeholder::after {
  content: "FIG. 01 · MMXXVI";
  position: absolute;
  top: 20px;
  right: 24px;
  color: var(--df-ink-300);
}

/* =========================================================================
   SECTION 2 — THE GAP
   ========================================================================= */
.gap::before { content: "— § 02 / THE GAP"; }

.gap h2 {
  max-width: 22ch;
  margin-bottom: clamp(56px, 8vw, 96px);
  text-wrap: balance;
}
.gap h2::before {
  content: "Field note 02 — ";
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--df-ink-500);
  display: block;
  margin-bottom: 18px;
  font-style: normal;
}

.two-column-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .two-column-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

.image-placeholder {
  background: #2A2724;
  height: 320px;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--df-ink-300);
}
.image-placeholder::before {
  content: "PLATE — IMAGE PLACEHOLDER";
  position: absolute;
  top: 20px;
  left: 24px;
  color: var(--df-amber-500);
}
.image-placeholder::after {
  content: "FIG.";
  position: absolute;
  top: 20px;
  right: 24px;
  color: var(--df-ink-300);
}
.gap .two-column-grid .image-placeholder:nth-child(1)::after { content: "FIG. 02·A"; }
.gap .two-column-grid .image-placeholder:nth-child(2)::after { content: "FIG. 02·B"; }

/* hide raw "IMAGE PLACEHOLDER" text inside placeholders, replace with caption */
.image-placeholder, .hero-image-placeholder, .architecture-placeholder {
  color: transparent;
  text-indent: -9999px;
  overflow: hidden;
}
.image-placeholder::before, .image-placeholder::after,
.hero-image-placeholder::before, .hero-image-placeholder::after,
.architecture-placeholder::before, .architecture-placeholder::after {
  text-indent: 0;
  font-size: 10px;
  color: var(--df-amber-500);
}
.image-placeholder::after, .hero-image-placeholder::after, .architecture-placeholder::after {
  color: var(--df-ink-300);
}

/* =========================================================================
   SECTION 3 — WHY DF
   ========================================================================= */
.why-df::before { content: "— § 03 / MANDATE"; }

.why-df {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(48px, 6vw, 80px);
}

.gold-heading {
  color: var(--df-amber-500) !important;
  max-width: 16ch;
  font-size: clamp(40px, 5.5vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.gold-heading em {
  font-style: italic;
  color: var(--df-bone-100);
}

.why-df-copy {
  max-width: 62ch;
  border-top: 1px solid rgba(244, 184, 96, 0.3);
  padding-top: 32px;
}
.why-df-copy p {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.3vw, 18px);
  line-height: 1.65;
  color: var(--df-bone-100);
  opacity: 0.82;
  margin-bottom: 22px;
}
.why-df-copy p:last-child { margin-bottom: 0; }
.why-df-copy p:first-child {
  font-family: var(--font-editorial);
  font-style: italic;
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  opacity: 1;
  color: var(--df-bone-100);
  margin-bottom: 32px;
}

.architecture-placeholder {
  background: var(--df-ink-800);
  border: 1px solid rgba(244, 184, 96, 0.25);
  height: 380px;
  width: 100%;
}
.architecture-placeholder::before { content: "PLATE III — OPERATING FRAMEWORK"; }
.architecture-placeholder::after { content: "FIG. 03"; }

/* =========================================================================
   SECTION 3B — TRUST STRIP
   ========================================================================= */
.trust-strip {
  padding: clamp(40px, 5vw, 64px) clamp(32px, 6vw, 96px);
  text-align: center;
  border-top: 1px solid var(--df-ink-900);
  border-bottom: 1px solid var(--df-ink-900);
}
.trust-strip::before { content: "— § 03·B / NETWORK"; }

.trust-text {
  font-family: var(--font-editorial);
  font-style: italic;
  font-size: clamp(20px, 2.2vw, 30px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--df-ink-900);
  max-width: 28ch;
  margin: 0 auto;
  text-wrap: balance;
}
.trust-text::before {
  content: "— TRUSTED NETWORK";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--df-ink-500);
  margin-bottom: 24px;
  font-style: normal;
}

/* =========================================================================
   SECTION 4 — PROOF OF WORK
   ========================================================================= */
.proof::before { content: "— § 04 / PROOF"; }

.proof-header {
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-bottom: 1px solid rgba(244, 184, 96, 0.4);
  padding-bottom: 40px;
  margin-bottom: clamp(48px, 6vw, 80px);
}
.proof-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--df-amber-500);
}
.proof-label::before { content: "— "; }

.proof-client {
  font-family: var(--font-editorial);
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--df-bone-100);
  max-width: 22ch;
}

.proof-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 768px) {
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .proof-grid { grid-template-columns: repeat(4, 1fr); }
}

.proof-column {
  padding: 32px 24px 32px 0;
  border-top: 1px solid rgba(244, 184, 96, 0.25);
  position: relative;
}
@media (min-width: 1024px) {
  .proof-column {
    padding: 0 28px 0 0;
    border-top: none;
    border-left: 1px solid rgba(244, 184, 96, 0.25);
    padding-left: 28px;
  }
  .proof-column:first-child { padding-left: 0; border-left: none; }
}

.proof-column-header {
  font-family: var(--font-mono) !important;
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--df-amber-500);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 12px;
  display: block;
  position: relative;
}
.proof-column:nth-child(1) .proof-column-header::before { content: "I · "; }
.proof-column:nth-child(2) .proof-column-header::before { content: "II · "; }
.proof-column:nth-child(3) .proof-column-header::before { content: "III · "; }
.proof-column:nth-child(4) .proof-column-header::before { content: "IV · "; }

.proof-column p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.65;
  color: var(--df-bone-100);
  opacity: 0.78;
}

/* =========================================================================
   SECTION 5 — DIAGNOSTIC
   ========================================================================= */
.diagnostic::before { content: "— § 05 / DIAGNOSTIC"; }

.diagnostic-intro {
  text-align: left;
  max-width: 800px;
  margin: 0 auto clamp(56px, 7vw, 96px);
  border-bottom: 1px solid var(--df-ink-200);
  padding-bottom: 40px;
}
.diagnostic-intro h2 {
  font-family: var(--font-editorial);
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--df-ink-900);
  margin-bottom: 20px;
  max-width: 14ch;
}
.diagnostic-intro h2::before {
  content: "— § INTAKE";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--df-amber-700);
  margin-bottom: 18px;
  font-style: normal;
}

.diagnostic-subheading {
  font-family: var(--font-editorial);
  font-style: italic;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.35;
  color: var(--df-ink-700);
  margin-bottom: 20px;
}

.diagnostic-detail {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--df-ink-500);
}
.diagnostic-detail::before { content: "FILE — "; color: var(--df-ink-300); }

.diagnostic-form {
  max-width: 800px;
  margin: 0 auto;
}

.questions-container {
  margin-bottom: 32px;
  counter-reset: question-counter;
}

.question-group { margin-bottom: 48px; }

.question-text {
  font-family: var(--font-editorial);
  font-weight: 400;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--df-ink-900);
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--df-ink-200);
  position: relative;
  padding-left: 56px;
  counter-increment: question-counter;
}
.question-text::before {
  content: "Q.0" counter(question-counter);
  position: absolute;
  left: 0;
  top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--df-amber-700);
}

.card-select-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 768px) {
  .card-select-group {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

.card-select {
  border: 1px solid var(--df-ink-200);
  background: var(--df-bone-50);
  padding: 22px 24px;
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease-standard),
              background var(--dur-base) var(--ease-standard),
              color var(--dur-base) var(--ease-standard);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--df-ink-700);
  border-radius: var(--radius-sm);
  position: relative;
  min-height: 92px;
  display: flex;
  align-items: flex-end;
}
.card-select::before {
  content: "○";
  position: absolute;
  top: 18px;
  right: 22px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--df-ink-300);
  transition: color var(--dur-base);
}
.card-select:hover {
  border-color: var(--df-ink-900);
  background: var(--df-bone-100);
  color: var(--df-ink-900);
}
.card-select:hover::before { color: var(--df-amber-700); }
.card-select.selected {
  border-color: var(--df-ink-900);
  background: var(--df-ink-900);
  color: var(--df-bone-100);
}
.card-select.selected::before {
  content: "●";
  color: var(--df-amber-500);
}

/* Preview line */
.preview-line {
  background: var(--df-ink-900);
  color: var(--df-bone-100);
  padding: 32px 36px;
  margin: 48px 0;
  font-family: var(--font-editorial);
  font-style: italic;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.4;
  text-align: left;
  border-radius: var(--radius-sm);
  position: relative;
}
.preview-line::before {
  content: "— READING";
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--df-amber-500);
  font-style: normal;
  margin-bottom: 14px;
}

/* Lead form */
.lead-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 40px;
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--df-ink-900);
}
.lead-form::before {
  content: "— § INTRODUCE YOURSELF";
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--df-amber-700);
  margin-bottom: -8px;
}

.form-group { display: flex; flex-direction: column; }

.form-input {
  border: none;
  border-bottom: 1px solid var(--df-ink-300);
  padding: 14px 0 12px;
  font-size: 16px;
  font-family: var(--font-body);
  color: var(--df-ink-900);
  background: transparent;
  transition: border-color var(--dur-base) var(--ease-standard);
}
.form-input::placeholder {
  color: var(--df-ink-300);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.form-input:focus {
  outline: none;
  border-bottom-color: var(--df-amber-700);
}

#submit-btn {
  grid-column: 1 / -1;
  margin-top: 16px;
}

/* Buttons */
.btn-primary {
  background: var(--df-ink-900);
  color: var(--df-bone-100);
  border: 1px solid var(--df-ink-900);
  padding: 20px 28px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-standard),
              color var(--dur-base) var(--ease-standard);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  border-radius: var(--radius-sm);
}
.btn-primary:hover:not(:disabled) {
  background: var(--df-amber-500);
  color: var(--df-ink-900);
  border-color: var(--df-amber-500);
}
.btn-primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.btn-full { width: 100%; padding: 22px; font-size: 13px; }

/* Loading */
.loading-state {
  text-align: center;
  padding: 48px 0;
  border-top: 1px solid var(--df-ink-200);
  margin-top: 32px;
}
.loading-text {
  font-family: var(--font-editorial);
  font-style: italic;
  font-size: 22px;
  color: var(--df-amber-700);
  position: relative;
  display: inline-block;
}
.loading-text::before {
  content: "— ";
  color: var(--df-ink-500);
}

/* =========================================================================
   SECTION 6 — CLOSE
   ========================================================================= */
.close::before { content: "— § 06 / CLOSE"; color: var(--df-amber-500); }

.close {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 64px;
  padding-top: clamp(80px, 10vw, 140px);
  padding-bottom: clamp(40px, 5vw, 64px);
}

.response-zone {
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
}
.response-text {
  font-family: var(--font-editorial);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.45;
  color: var(--df-bone-100);
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}
.response-text p { margin-bottom: 24px; }
.response-text::before {
  content: "— DELTA FOUNDRY · READING";
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--df-amber-500);
  margin-bottom: 24px;
}
.confirmation-line {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--df-ink-300);
  font-style: normal;
  margin-bottom: 32px;
}

#calendar-btn {
  background: var(--df-amber-500);
  color: var(--df-ink-900);
  border-color: var(--df-amber-500);
}
#calendar-btn:hover {
  background: var(--df-bone-100);
  color: var(--df-ink-900);
  border-color: var(--df-bone-100);
}

/* Default close state */
.close-default {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
  align-items: end;
  border-top: 1px solid rgba(244, 184, 96, 0.3);
  padding-top: 48px;
}
.close-eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--df-amber-500);
  margin-bottom: 24px;
}
.close-tagline {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  letter-spacing: 0.04em;
  line-height: 0.95;
  color: var(--df-bone-100);
  text-transform: uppercase;
}
.close-tagline::after {
  content: " ·";
  color: var(--df-amber-500);
}
.close-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.close-meta > div {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid rgba(244, 184, 96, 0.2);
  padding-top: 12px;
}
.meta-label { color: var(--df-ink-500); }
.meta-value { color: var(--df-bone-100); }

@media (max-width: 768px) {
  .close-default { grid-template-columns: 1fr; gap: 32px; }
  .lead-form { grid-template-columns: 1fr; }
  section::before { left: 16px; top: 16px; }
}