/* ==========================================================
   DIGITAL BRAIN — LANDING PAGE V1
   ========================================================== */

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

:root {
  /* Palette */
  --bg: #0A0A0B;
  --bg-secondary: #111111;
  --card: #141414;
  --card-hover: #181818;
  --border: #252525;
  --border-soft: #1c1c1c;
  --white: #F5F5F5;
  --gray: #A1A1AA;
  --gray-dim: #71717A;
  --orange: #FF6A00;
  --orange-2: #F58220;
  --orange-glow: rgba(255, 106, 0, 0.16);
  --orange-glow-soft: rgba(255, 106, 0, 0.08);
  --success: #22C55E;
  --error: #F87171;

  /* Type */
  --font-display: 'Geist', 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Manrope', 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 680px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --header-h: 68px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .flow-pulse { display: none; }
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--white);
}

p { color: var(--gray); }

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

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

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

ul, ol { list-style: none; }

input, select, textarea { font-family: inherit; font-size: 16px; }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.container--narrow {
  max-width: var(--container-narrow);
}

@media (min-width: 768px) {
  .container { padding-inline: 32px; }
}
@media (min-width: 1024px) {
  .container { padding-inline: 48px; }
}

.section { padding-block: 72px; }
@media (min-width: 768px) { .section { padding-block: 104px; } }

.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); margin-bottom: 16px; }
.section-sub { font-size: 1.0625rem; max-width: 60ch; }

.text-accent { color: var(--orange); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-2);
  margin-bottom: 20px;
}

/* ==========================================================
   BUTTONS
   ========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  transition: transform 0.15s var(--ease), background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
  min-height: 44px;
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--orange);
  color: #0A0A0B;
  box-shadow: 0 1px 0 rgba(255,255,255,0.12) inset;
}
.btn--primary:hover { background: var(--orange-2); }

.btn--ghost {
  border: 1px solid var(--border);
  color: var(--white);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--orange); color: var(--orange-2); }

.btn--sm { padding: 10px 18px; font-size: 0.875rem; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn--block { width: 100%; }

.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--orange-glow), 0 0 0 1px var(--orange);
}

.btn__spinner { display: none; width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(10,10,11,0.3); border-top-color: #0A0A0B; animation: spin 0.7s linear infinite; }
.btn.is-loading .btn__label { opacity: 0.7; }
.btn.is-loading .btn__spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.center-cta { display: flex; justify-content: center; margin-top: 40px; }

/* ==========================================================
   HEADER
   ========================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background: transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border-soft);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
}

.site-header__logo { display: flex; align-items: center; gap: 10px; }
.logo-text { font-family: var(--font-display); font-weight: 700; font-size: 1.0625rem; letter-spacing: -0.01em; }

.site-header__nav { display: none; align-items: center; gap: 32px; font-size: 0.9375rem; color: var(--gray); }
.site-header__nav a { transition: color 0.2s ease; }
.site-header__nav a:hover { color: var(--white); }

.site-header__cta { display: none; }

.site-header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
}
.site-header__burger span { width: 20px; height: 1.5px; background: var(--white); transition: transform 0.2s ease, opacity 0.2s ease; }
.site-header__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.site-header__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(10,10,11,0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 18px;
}
.mobile-nav a { font-size: 1rem; padding: 6px 0; }
.mobile-nav[hidden] { display: none; }

@media (min-width: 1024px) {
  .site-header__nav { display: flex; }
  .site-header__cta { display: inline-flex; }
  .site-header__burger { display: none; }
}

/* ==========================================================
   HERO
   ========================================================== */
.hero { padding-top: 56px; padding-bottom: 64px; }

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

.hero__headline {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  line-height: 1.06;
  margin-bottom: 20px;
}

.hero__sub {
  font-size: 1.125rem;
  max-width: 52ch;
  margin-bottom: 32px;
}

.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 24px; }

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-size: 0.8125rem;
  color: var(--gray-dim);
}
.hero__trust li { display: flex; align-items: center; gap: 8px; }
.hero__trust li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--orange); flex-shrink: 0; }

.hero__visual { display: flex; justify-content: center; }

.flow-diagram {
  position: relative;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 340 / 420;
}
.flow-diagram__svg { width: 100%; height: 100%; }
.flow-node {
  position: absolute;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  white-space: nowrap;
}
.flow-node--right { transform: translate(0, -50%); }

@media (min-width: 1024px) {
  .hero { padding-top: 88px; padding-bottom: 96px; }
  .hero__grid { grid-template-columns: 1.1fr 0.9fr; gap: 64px; }
  .hero__visual { justify-content: flex-end; }
}

/* ==========================================================
   PROBLEM CARDS
   ========================================================== */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.problem-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  text-align: left;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, transform 0.15s var(--ease);
  min-height: 44px;
}
.problem-card:hover { border-color: #3a3a3a; }
.problem-card:active { transform: scale(0.99); }

.problem-card[aria-pressed="true"] {
  border-color: var(--orange);
  background: linear-gradient(180deg, var(--orange-glow-soft), var(--card));
  box-shadow: 0 0 0 1px var(--orange-glow);
}

.problem-card__icon { color: var(--orange-2); flex-shrink: 0; margin-top: 2px; }
.problem-card[aria-pressed="true"] .problem-card__icon { color: var(--orange); }
.problem-card__text { font-size: 0.9375rem; color: var(--white); line-height: 1.4; }

.problem-section__micro { font-size: 0.9375rem; color: var(--gray); max-width: 60ch; }
.problem-section__micro strong { color: var(--white); }

@media (min-width: 640px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .problem-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================
   BEFORE / AFTER
   ========================================================== */
.before-after__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.ba-column {
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border);
}

.ba-column--manual { background: var(--bg-secondary); }
.ba-column--connected {
  background: linear-gradient(160deg, var(--orange-glow-soft), var(--card));
  border-color: var(--orange-glow);
}

.ba-column__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-dim);
  margin-bottom: 20px;
}
.ba-column--connected .ba-column__tag { color: var(--orange-2); }

.ba-steps li {
  font-size: 0.9375rem;
  padding-block: 10px;
  color: var(--gray);
  position: relative;
  padding-left: 20px;
}
.ba-steps li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.ba-steps--fragmented li { border-bottom: 1px dashed var(--border); opacity: 0.75; }
.ba-steps--fragmented li:nth-child(even) { opacity: 0.55; }
.ba-steps--fragmented li::before { background: var(--gray-dim); }
.ba-steps--fragmented li:last-child { border-bottom: none; }

.ba-steps--fluid li { border-bottom: 1px solid var(--border-soft); color: var(--white); }
.ba-steps--fluid li::before { background: var(--orange); box-shadow: 0 0 8px var(--orange-glow); }
.ba-steps--fluid li:last-child { border-bottom: none; }

.before-after__closing {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  max-width: 46ch;
}

@media (min-width: 768px) {
  .before-after__grid { grid-template-columns: 1fr 1fr; gap: 24px; }
}

/* ==========================================================
   CALCULATOR
   ========================================================== */
.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}

.calculator__fields { display: flex; flex-direction: column; gap: 24px; min-width: 0; }

.calc-field { min-width: 0; }

.calc-field__label-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px 12px;
  margin-bottom: 12px;
  min-width: 0;
}

.calc-field__label-row label { min-width: 0; }
.calc-field label { font-size: 0.9375rem; color: var(--white); }
.calc-field output { font-family: var(--font-display); font-weight: 700; color: var(--orange-2); font-size: 0.9375rem; white-space: nowrap; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 44px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  margin-top: -10px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--orange);
  border: 3px solid #0A0A0B;
  box-shadow: 0 0 0 1px var(--orange);
}
input[type="range"]::-moz-range-track {
  height: 4px;
  background: var(--border);
  border-radius: 999px;
}
input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--orange);
  border: 3px solid #0A0A0B;
}

.calculator__result {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--orange-glow);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}
.calculator__result-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-dim);
  margin-bottom: 10px;
}
.calculator__result-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  color: var(--orange);
  line-height: 1.1;
}
.calculator__result-value--year { font-size: clamp(1.25rem, 3vw, 1.5rem); color: var(--white); margin-top: 4px; }
.calculator__result-period { font-size: 0.8125rem; color: var(--gray-dim); margin-bottom: 4px; }
.calculator__disclaimer { font-size: 0.75rem; color: var(--gray-dim); margin: 16px 0 20px; line-height: 1.5; }

@media (min-width: 1024px) {
  .calculator { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 40px; padding: 40px; }
}

/* ==========================================================
   LEAD FORM
   ========================================================== */
.lead-form { display: flex; flex-direction: column; gap: 20px; }

.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 0.875rem; font-weight: 500; color: var(--white); }
.form-row .required { color: var(--orange); margin-left: 2px; }
.form-row .optional { color: var(--gray-dim); font-weight: 400; }

.form-row input[type="text"],
.form-row input[type="tel"],
.form-row input[type="email"],
.form-row select {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--white);
  min-height: 44px;
  transition: border-color 0.2s ease;
}
.form-row input:focus, .form-row select:focus { border-color: var(--orange); }
.form-row select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A1A1AA' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }

.form-row.has-error input, .form-row.has-error select { border-color: var(--error); }
.form-error { font-size: 0.8125rem; color: var(--error); min-height: 1em; display: block; }

.form-row--checkbox { flex-direction: row; }
.checkbox-label { display: flex; align-items: flex-start; gap: 10px; font-size: 0.8125rem; color: var(--gray); cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--orange); margin-top: 1px; }
.checkbox-label a { color: var(--orange-2); text-decoration: underline; }

.form-status { font-size: 0.875rem; text-align: center; min-height: 1.2em; }
.form-status.is-error { color: var(--error); }
.form-status.is-success { color: var(--success); }

/* ==========================================================
   DIAGNOSTIC RESULT
   ========================================================== */
.diagnostic-result {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--border-soft);
  animation: fadeSlideUp 0.5s var(--ease) both;
}
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.diagnostic-result__headline { font-size: clamp(1.5rem, 4vw, 2rem); margin-bottom: 12px; }
.diagnostic-result__sub { font-size: 1rem; margin-bottom: 32px; max-width: 60ch; }

.diagnostic-cost {
  background: var(--card);
  border: 1px solid var(--orange-glow);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  margin-bottom: 32px;
}
.diagnostic-cost h3 { font-size: 1.125rem; margin-bottom: 14px; }
.diagnostic-cost p { color: var(--white); line-height: 1.7; }
.diagnostic-cost strong { color: var(--orange); font-family: var(--font-display); }
.diagnostic-cost .diag-note { display: block; margin-top: 14px; font-size: 0.8125rem; color: var(--gray-dim); }

.diagnostic-areas { display: grid; grid-template-columns: 1fr; gap: 14px; margin-bottom: 40px; }
.diagnostic-area-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}
.diagnostic-area-card h4 { font-size: 0.9375rem; margin-bottom: 8px; color: var(--white); }
.diagnostic-area-card h4 span { display: block; font-size: 0.75rem; font-weight: 500; color: var(--orange-2); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 4px; }
.diagnostic-area-card p { font-size: 0.875rem; line-height: 1.6; }
.diagnostic-areas__overflow { font-size: 0.8125rem; color: var(--gray-dim); grid-column: 1 / -1; }

.diagnostic-cta {
  background: linear-gradient(160deg, var(--orange-glow-soft), transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.diagnostic-cta h3 { font-size: 1.25rem; margin-bottom: 10px; }
.diagnostic-cta p { margin-bottom: 20px; max-width: 48ch; margin-inline: auto; }

@media (min-width: 640px) {
  .diagnostic-areas { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================
   AUTOMATION DEMO
   ========================================================== */
.automation-demo { background: var(--bg-secondary); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.automation-demo__highlight {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--white);
  max-width: 50ch;
  margin: 28px 0 32px;
}
.automation-demo__flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 6px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
}
.automation-demo__flow span:not(.flow-arrow) {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
}
.flow-arrow { color: var(--orange); }

/* ==========================================================
   SOLUTIONS
   ========================================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 32px;
}
.solution-card {
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.solution-card__index {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 14px;
}
.solution-card h3 { font-size: 1.25rem; margin-bottom: 10px; }
.solution-card p { font-size: 0.9375rem; max-width: 42ch; }
.solutions-section__closing { font-family: var(--font-display); font-weight: 600; font-size: 1.125rem; color: var(--white); }

@media (min-width: 768px) {
  .solutions-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 40px; }
}

/* ==========================================================
   HOW IT WORKS
   ========================================================== */
.steps-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 32px;
  position: relative;
}
.steps-list__item {
  display: flex;
  gap: 20px;
  padding-block: 24px;
  border-bottom: 1px solid var(--border-soft);
}
.steps-list__item:last-child { border-bottom: none; }
.steps-list__num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--orange);
  flex-shrink: 0;
  width: 44px;
}
.steps-list__item h3 { font-size: 1.0625rem; margin-bottom: 6px; }
.steps-list__item p { font-size: 0.9375rem; }
.how-it-works__closing { font-family: var(--font-display); font-weight: 600; font-size: 1.125rem; color: var(--white); }

@media (min-width: 768px) {
  .steps-list__item { align-items: center; }
}

/* ==========================================================
   FAQ
   ========================================================== */
.accordion__item { border-bottom: 1px solid var(--border-soft); }
.accordion__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  text-align: left;
  padding-block: 22px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  min-height: 44px;
}
.accordion__trigger::after {
  content: '';
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-right: 1.5px solid var(--gray);
  border-bottom: 1.5px solid var(--gray);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after { transform: rotate(-135deg); }
.accordion__panel { padding-bottom: 22px; font-size: 0.9375rem; max-width: 65ch; }

/* ==========================================================
   FINAL CTA
   ========================================================== */
.final-cta {
  position: relative;
  padding-block: 88px;
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--border-soft);
}
.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 0%, var(--orange-glow) 0%, transparent 70%);
  pointer-events: none;
}
.final-cta .container { position: relative; }
.final-cta h2 { font-size: clamp(1.75rem, 4.5vw, 2.5rem); max-width: 20ch; margin-inline: auto; margin-bottom: 16px; }
.final-cta p { max-width: 50ch; margin-inline: auto; margin-bottom: 32px; }
.final-cta__buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer { border-top: 1px solid var(--border-soft); padding-top: 56px; }
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
.site-footer__brand p { font-size: 0.875rem; max-width: 40ch; margin-top: 12px; }
.site-footer__links, .site-footer__contact { display: flex; flex-direction: column; gap: 12px; font-size: 0.875rem; color: var(--gray); }
.site-footer__links a:hover, .site-footer__contact a:hover { color: var(--white); }
.site-footer__copy {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-dim);
  border-top: 1px solid var(--border-soft);
  padding-block: 24px;
}

@media (min-width: 768px) {
  .site-footer__inner { grid-template-columns: 2fr 1fr 1fr; }
}

/* ==========================================================
   WHATSAPP FLOAT
   ========================================================== */
.whatsapp-float {
  position: fixed;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(20px, env(safe-area-inset-bottom));
  z-index: 40;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--orange);
  color: #0A0A0B;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: transform 0.2s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.05); }
.whatsapp-float:active { transform: scale(0.96); }

.whatsapp-float__tooltip {
  position: absolute;
  right: calc(100% + 12px);
  bottom: 50%;
  transform: translateY(50%) translateX(8px);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--white);
  font-size: 0.8125rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.whatsapp-float.show-tooltip .whatsapp-float__tooltip {
  opacity: 1;
  transform: translateY(50%) translateX(0);
}

@media (max-width: 480px) {
  .whatsapp-float__tooltip { display: none; }
}