/* Focus Tracker — landing page styles */
:root {
  --bg: #FAFAF7;
  --bg-2: #F4F1EA;
  --ink: #0F172A;
  --ink-2: #1F2937;
  --muted: rgba(15, 23, 42, 0.58);
  --muted-2: rgba(15, 23, 42, 0.42);
  --line: rgba(15, 23, 42, 0.10);
  --line-soft: rgba(15, 23, 42, 0.06);
  --card: #FFFFFF;
  --card-soft: #FBFAF6;
  --accent: #FF6B3D;
  --accent-soft: rgba(255, 107, 61, 0.10);
  --serif: 'Instrument Serif', 'Cormorant Garamond', Georgia, serif;
  --sans: 'Inter', -apple-system, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --container: 1180px;
  --radius: 16px;
}

[data-theme="dark"] {
  --bg: #0B0D11;
  --bg-2: #12151B;
  --ink: #F5F2EC;
  --ink-2: #E8E5DE;
  --muted: rgba(245, 242, 236, 0.58);
  --muted-2: rgba(245, 242, 236, 0.42);
  --line: rgba(245, 242, 236, 0.12);
  --line-soft: rgba(245, 242, 236, 0.06);
  --card: #14171D;
  --card-soft: #181B22;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'ss01', 'cv11';
  font-size: 16px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.serif { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -0.005em; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: 32px; }

/* Animations */
@keyframes ftFadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ftFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ────────────────────────────────────────────────────────── */
/* Nav                                                         */
/* ────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  padding: 18px 0;
  transition: all 0.25s ease;
  background: transparent;
}
.nav-scrolled {
  padding: 10px 0;
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav-logo {
  font-size: 19px; font-weight: 700; letter-spacing: -0.02em;
  display: flex; align-items: baseline; gap: 4px;
}
.nav-logo-tracker { font-weight: 400; color: var(--muted); margin-left: 2px; letter-spacing: -0.01em; }
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-size: 14px; color: var(--muted); transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.lang-switch {
  display: flex; gap: 2px; padding: 3px;
  background: var(--line-soft); border-radius: 999px;
}
.lang-switch button {
  border: 0; background: transparent; padding: 5px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--muted); cursor: pointer; transition: all 0.15s;
  font-family: var(--mono);
}
.lang-switch button.on {
  background: var(--ink); color: var(--bg);
}
.nav-cta {
  font-size: 13.5px; font-weight: 500;
  background: var(--ink); color: var(--bg);
  padding: 9px 14px; border-radius: 999px;
  transition: transform 0.15s, opacity 0.15s;
}
.nav-cta:hover { transform: translateY(-1px); opacity: 0.92; }

.theme-btn {
  width: 32px; height: 32px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card-soft);
  color: var(--ink); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.theme-btn:hover { background: var(--card); border-color: var(--line); color: var(--accent); }

@media (max-width: 720px) {
  .nav-links { display: none; }
}

/* ────────────────────────────────────────────────────────── */
/* Hero                                                        */
/* ────────────────────────────────────────────────────────── */
.hero {
  padding: 56px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(900px 500px at 80% 0%, var(--accent-soft), transparent 60%),
    radial-gradient(700px 400px at 0% 30%, color-mix(in oklab, var(--accent-soft) 40%, transparent), transparent 60%);
}
.hero-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center;
  position: relative;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted);
  padding: 7px 12px; border-radius: 999px;
  background: var(--card-soft); border: 1px solid var(--line);
  margin-bottom: 24px;
}
.eyebrow-dot { width: 6px; height: 6px; border-radius: 99px; box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent); }

.hero-h {
  font-size: clamp(40px, 5.6vw, 78px);
  line-height: 1.02; letter-spacing: -0.035em;
  margin: 0 0 24px; font-weight: 600;
  text-wrap: balance;
}
.hero-h .serif {
  font-size: 1.04em;
  font-weight: 400;
}
.hero-sub {
  font-size: 18px; line-height: 1.5; color: var(--muted);
  max-width: 520px; margin: 0 0 32px; text-wrap: pretty;
}

.hero-cta-row {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-micro { font-size: 12.5px; color: var(--muted-2); max-width: 240px; line-height: 1.4; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--ink); color: var(--bg);
  padding: 14px 22px; border-radius: 999px;
  font-size: 15px; font-weight: 500; letter-spacing: -0.005em;
  border: 0; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 1px 0 rgba(255,255,255,0.1) inset, 0 4px 14px rgba(15,23,42,0.18);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 1px 0 rgba(255,255,255,0.1) inset, 0 8px 24px rgba(15,23,42,0.25); }
.btn-primary:disabled { opacity: 0.6; cursor: progress; transform: none; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--ink);
  padding: 10px 16px; border-radius: 999px;
  font-size: 13.5px; font-weight: 500;
  border: 1px solid var(--line); cursor: pointer;
  transition: background 0.15s;
}
.btn-ghost:hover { background: var(--line-soft); }

.hero-rail {
  display: flex; align-items: center; gap: 22px;
  padding-top: 26px; border-top: 1px solid var(--line-soft);
}
.rail-item .rail-num {
  font-family: var(--serif); font-style: italic; font-size: 28px; line-height: 1;
  color: var(--ink); letter-spacing: -0.02em;
}
.rail-item .rail-lbl {
  font-family: var(--mono); font-size: 10.5px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted-2); margin-top: 5px;
}
.rail-divider { width: 1px; height: 28px; background: var(--line); }

.hero-device-wrap {
  position: relative; display: flex; justify-content: center; align-items: center;
  min-height: 720px;
}
.hero-device-glow {
  position: absolute; inset: -10% -20% -10% -20%;
  filter: blur(40px); pointer-events: none;
}
.hero-device {
  position: relative;
  transform: rotate(-2deg);
  filter: drop-shadow(0 40px 60px rgba(15,23,42,0.18));
}
.hero-try-hint {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  z-index: 2;
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--muted); font-family: var(--mono);
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.10em;
  padding: 8px 14px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--line);
  box-shadow: 0 4px 16px rgba(15,23,42,0.06);
  animation: ftFloat 3.5s ease-in-out infinite;
  white-space: nowrap;
}
.hero-try-hint svg { color: var(--accent); }

@media (max-width: 960px) {
  .hero { padding: 32px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-device-wrap { min-height: auto; }
  .hero-device { transform: rotate(0); }
  .hero-try-hint { display: none; }
}

/* ────────────────────────────────────────────────────────── */
/* Section shell                                               */
/* ────────────────────────────────────────────────────────── */
.section { padding: 96px 0; position: relative; }
.section + .section { border-top: 1px solid var(--line-soft); }
.section-head { max-width: 800px; margin-bottom: 56px; }
.section-head.center { text-align: center; margin-inline: auto; }
.kicker {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.10em; color: var(--accent);
  margin-bottom: 18px;
}
.section-h {
  font-size: clamp(30px, 3.6vw, 50px);
  line-height: 1.08; letter-spacing: -0.025em;
  margin: 0 0 18px; font-weight: 600;
  text-wrap: balance;
}
.section-h .serif { font-weight: 400; font-size: 1.04em; }
.section-p {
  font-size: 17px; line-height: 1.55; color: var(--muted);
  max-width: 640px; margin: 0; text-wrap: pretty;
}
.hero-h.serif { display: inline; }

@media (max-width: 720px) { .section { padding: 64px 0; } }

/* ────────────────────────────────────────────────────────── */
/* Problem                                                     */
/* ────────────────────────────────────────────────────────── */
.section-problem .two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start;
}
.prose p { font-size: 17px; line-height: 1.6; color: var(--muted); margin: 0; }
.bullets { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.bullets li {
  display: flex; gap: 16px; padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 16px; line-height: 1.45;
}
.bullets li:last-child { border-bottom: 0; }
.bullet-num {
  font-family: var(--mono); font-size: 11.5px; color: var(--muted-2);
  letter-spacing: 0.08em; padding-top: 3px; flex-shrink: 0;
}
@media (max-width: 720px) {
  .section-problem .two-col { grid-template-columns: 1fr; gap: 32px; }
}

/* ────────────────────────────────────────────────────────── */
/* Solution visual                                             */
/* ────────────────────────────────────────────────────────── */
.section-solution { background: var(--bg-2); border-top: 0; }
.section-solution + .section { border-top: 1px solid var(--line-soft); }
.solution-vis {
  margin-top: 48px;
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 32px;
  align-items: stretch;
  padding: 32px;
  background: var(--card); border-radius: 24px;
  border: 1px solid var(--line-soft);
  max-width: 920px; margin-inline: auto;
}
.vis-col { display: flex; flex-direction: column; gap: 14px; }
.vis-label {
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted-2);
}
.vis-stack { display: flex; flex-direction: column; gap: 10px; }
.vis-row { display: flex; align-items: center; gap: 10px; }
.vis-dot { width: 6px; height: 6px; border-radius: 99px; background: var(--muted-2); flex-shrink: 0; }
.vis-bar { height: 8px; border-radius: 99px; background: var(--line); }
.vis-row-on { animation: ftFadeUp 0.4s ease backwards; }
.vis-row-on:nth-child(2) { animation-delay: 0.1s; }
.vis-row-on:nth-child(3) { animation-delay: 0.2s; }
.vis-dot-on { background: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.vis-bar-on { background: linear-gradient(90deg, var(--accent), color-mix(in oklab, var(--accent) 60%, transparent)); height: 10px; }
.vis-arrow {
  display: flex; align-items: center; justify-content: center; color: var(--muted-2);
}
.vis-col-narrow .vis-stack { justify-content: center; flex: 1; }
@media (max-width: 720px) {
  .solution-vis { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .vis-arrow { transform: rotate(90deg); }
}

/* ────────────────────────────────────────────────────────── */
/* How it works                                                */
/* ────────────────────────────────────────────────────────── */
.steps {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.step {
  display: flex; flex-direction: column; gap: 16px;
  padding: 32px 24px 32px 0;
  border-right: 1px solid var(--line-soft);
  position: relative;
}
.step:last-child { border-right: 0; padding-right: 0; }
.step:not(:first-child) { padding-left: 24px; }
.step-num {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: 0.08em; color: var(--accent);
}
.step-t {
  font-family: var(--serif); font-style: italic;
  font-size: 26px; line-height: 1.15; letter-spacing: -0.02em;
  color: var(--ink); margin-bottom: 8px;
}
.step-d {
  font-size: 14.5px; line-height: 1.5; color: var(--muted);
}
@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(2) { border-right: 0; }
  .step { padding: 28px 20px; }
  .step:not(:first-child) { padding-left: 20px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .step { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .step:last-child { border-bottom: 0; }
}

/* ────────────────────────────────────────────────────────── */
/* Context cards                                               */
/* ────────────────────────────────────────────────────────── */
.section-context { background: var(--bg-2); }
.ctx-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: 20px; overflow: hidden;
}
.ctx-card {
  background: var(--card); padding: 32px 28px;
  display: flex; flex-direction: column; gap: 8px;
  transition: background 0.2s;
}
.ctx-card:hover { background: var(--card-soft); }
.ctx-num {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: 0.08em; color: var(--accent); margin-bottom: 8px;
}
.ctx-t {
  font-size: 20px; font-weight: 600; letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.ctx-d { font-size: 14.5px; line-height: 1.5; color: var(--muted); }
@media (max-width: 860px) {
  .ctx-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .ctx-grid { grid-template-columns: 1fr; }
}

/* ────────────────────────────────────────────────────────── */
/* Who                                                         */
/* ────────────────────────────────────────────────────────── */
.who-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.who-card {
  padding: 28px 24px; border: 1px solid var(--line);
  border-radius: 18px; background: var(--card);
  display: flex; flex-direction: column; gap: 10px;
  transition: transform 0.2s, border-color 0.2s;
}
.who-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.who-t {
  font-family: var(--serif); font-style: italic;
  font-size: 24px; line-height: 1.1; letter-spacing: -0.02em;
}
.who-d { font-size: 14px; line-height: 1.5; color: var(--muted); }
@media (max-width: 960px) { .who-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .who-grid { grid-template-columns: 1fr; } }

/* ────────────────────────────────────────────────────────── */
/* Benefits                                                    */
/* ────────────────────────────────────────────────────────── */
.benefits-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 56px;
}
.benefit {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 18px 0; border-bottom: 1px solid var(--line-soft);
  font-size: 16px; line-height: 1.45;
}
.benefit:last-child, .benefit:nth-last-child(2) { /* last row no border */ }
@media (max-width: 720px) { .benefits-grid { grid-template-columns: 1fr; gap: 0; } }

/* ────────────────────────────────────────────────────────── */
/* Beta form                                                   */
/* ────────────────────────────────────────────────────────── */
.section-beta {
  background:
    radial-gradient(700px 400px at 80% 100%, var(--accent-soft), transparent 60%),
    var(--bg-2);
}
.beta-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  align-items: center;
}
.beta-copy .section-h { margin-bottom: 16px; }
.beta-copy .kicker { color: var(--accent); }
.stage-note {
  margin-top: 22px; padding: 14px 16px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; font-size: 13px; line-height: 1.5; color: var(--muted);
}

.beta-form-wrap {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 24px; padding: 32px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset, 0 30px 60px -30px rgba(15,23,42,0.18);
}
.beta-form { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field-lbl {
  font-family: var(--mono); font-size: 10.5px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.10em; color: var(--muted-2);
}
.field-input {
  font: inherit; font-size: 16px;
  padding: 14px 16px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--bg);
  color: var(--ink); outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.field-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.field-input::placeholder { color: var(--muted-2); }
.field-input-err { border-color: #DC2626; }
.field-input-err:focus { box-shadow: 0 0 0 4px rgba(220,38,38,0.10); }
.field-err { font-size: 12.5px; color: #DC2626; }

.consent {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 13px; line-height: 1.5; color: var(--muted);
  cursor: pointer; user-select: none;
  padding: 4px 0;
}
.consent input { position: absolute; opacity: 0; pointer-events: none; }
.consent-box {
  width: 18px; height: 18px; border-radius: 5px;
  border: 1.5px solid var(--line); background: var(--bg);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  margin-top: 1px; color: transparent;
  transition: all 0.15s;
}
.consent input:checked ~ .consent-box {
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.consent-err .consent-box { border-color: #DC2626; }
.consent-txt { flex: 1; }

.privacy-note { font-size: 12px; line-height: 1.5; color: var(--muted-2); margin-top: 4px; }

.beta-success {
  display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
  padding: 8px 0;
  animation: ftFadeUp 0.4s ease;
}
.success-icon {
  width: 44px; height: 44px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 4px;
}
.success-h { font-size: 28px; font-weight: 600; letter-spacing: -0.02em; margin: 0; }
.success-p { font-size: 15px; line-height: 1.55; color: var(--muted); margin: 0; }

@media (max-width: 860px) { .beta-grid { grid-template-columns: 1fr; gap: 32px; } }

/* ────────────────────────────────────────────────────────── */
/* FAQ                                                         */
/* ────────────────────────────────────────────────────────── */
.faq-list {
  border-top: 1px solid var(--line);
  max-width: 820px;
}
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0; gap: 24px;
  background: transparent; border: 0; cursor: pointer;
  font: inherit; font-size: 18px; font-weight: 500; letter-spacing: -0.01em;
  color: var(--ink);
  transition: color 0.15s;
}
.faq-q:hover { color: var(--accent); }
.faq-icon {
  display: flex; color: var(--muted-2);
  transition: transform 0.25s ease;
}
.faq-open .faq-icon { transform: rotate(180deg); color: var(--accent); }
.faq-a-wrap {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}
.faq-open .faq-a-wrap { grid-template-rows: 1fr; }
.faq-a {
  overflow: hidden;
  font-size: 15.5px; line-height: 1.6; color: var(--muted);
  max-width: 620px;
}
.faq-open .faq-a { padding: 0 0 22px; }

/* ────────────────────────────────────────────────────────── */
/* Footer                                                      */
/* ────────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  background: var(--bg-2);
}
.footer-inner {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 32px;
  align-items: center;
}
.footer-brand { display: flex; flex-direction: column; gap: 6px; }
.footer-logo { font-size: 19px; font-weight: 700; letter-spacing: -0.02em; }
.footer-tag { font-size: 13px; color: var(--muted); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13px; color: var(--muted); transition: color 0.15s; }
.footer-links a:hover { color: var(--ink); }
.footer-copy { font-size: 12.5px; color: var(--muted-2); text-align: right; font-family: var(--mono); }

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; gap: 16px; text-align: left; }
  .footer-copy { text-align: left; }
}