/* TankSensei marketing pages (/, /display). One stylesheet, shared by
   every page that uses site/partials. The /app SPA has its own. */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --blue-deep: #0c1e42;
  --blue-dark: #0a1834;
  --cyan: #7dd3ff;
  --cyan-text: #041a33;
  --alert: #ff7a7a;
  --text: #ffffff;
  --text-muted: #b4c8e6;
  --text-dim: #8fa6cc;
  --surface: rgba(130, 190, 255, 0.06);
  --surface-strong: rgba(12, 30, 66, 0.72);
  --surface-border: rgba(150, 198, 255, 0.18);
  --glass-shadow: 0 18px 44px -14px rgba(3, 9, 26, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --glass-blur: blur(18px) saturate(120%);
  --header-h: 60px;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
html,
body {
  background:
    radial-gradient(1100px 620px at 50% -10%, rgba(45, 91, 181, 0.35) 0%, transparent 60%),
    linear-gradient(180deg, #0c1e42 0%, #091634 52%, #060f24 100%);
  background-attachment: fixed;
  color: var(--text);
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body {
  position: relative;
  line-height: 1.5;
}
a {
  color: var(--cyan);
}
img {
  max-width: 100%;
}
.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;
}
.center {
  text-align: center;
}
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 300;
  background: var(--cyan);
  color: var(--cyan-text);
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: top 0.18s ease;
}
.skip-link:focus {
  top: 12px;
  outline: 2px solid var(--cyan-text);
  outline-offset: 2px;
}
.bubbles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.bubbles span {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
main,
.site-footer {
  position: relative;
  z-index: 1;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}
.wrap.narrow {
  max-width: 820px;
}

.wm-aqua {
  color: var(--text);
}
.wm-sensei {
  color: var(--cyan);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease,
    background 0.2s;
}
.btn-primary {
  background: var(--cyan);
  color: var(--cyan-text);
  box-shadow: 0 20px 40px -15px rgba(125, 211, 255, 0.6);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 50px -15px rgba(125, 211, 255, 0.7);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--surface-border);
}
.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--cyan);
}
.btn-sm {
  min-height: 38px;
  padding: 8px 16px;
  font-size: 12px;
  box-shadow: none;
  white-space: nowrap;
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
.linklike {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font: inherit;
  color: var(--text-muted);
  text-align: left;
}
.linklike:hover {
  color: var(--cyan);
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 150;
  background: rgba(10, 24, 52, 0.72);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.scrolled {
  border-bottom-color: var(--surface-border);
}
.header-row {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.brand img {
  width: 28px;
  height: 28px;
}
.wordmark {
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.01em;
}
.nav-desktop {
  display: none;
  gap: 24px;
}
.nav-desktop a,
.signin {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 15px;
}
.nav-desktop a:hover,
.signin:hover {
  color: var(--text);
}
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.signin {
  display: none;
}
.menu-btn {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  cursor: pointer;
}
.mobile-menu {
  display: flex;
  flex-direction: column;
  padding: 8px 20px 16px;
  border-top: 1px solid var(--surface-border);
}
.mobile-menu[hidden] {
  display: none;
}
.mobile-menu a {
  color: var(--text);
  text-decoration: none;
  padding: 12px 0;
  font-size: 17px;
  border-bottom: 1px solid rgba(150, 198, 255, 0.08);
}
@media (min-width: 768px) {
  .nav-desktop,
  .signin {
    display: flex;
  }
  .menu-btn,
  .mobile-menu {
    display: none !important;
  }
}

/* ============ SECTION SCAFFOLD ============ */
.sec {
  padding: 72px 0;
}
.sec-head {
  text-align: center;
  margin-bottom: 36px;
}
.eyebrow {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}
.eyebrow a {
  color: inherit;
}
h1,
h2,
h3 {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  letter-spacing: 0.01em;
}
h2 {
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.15;
  text-transform: uppercase;
}
h3 {
  font-size: 20px;
  line-height: 1.2;
  text-transform: uppercase;
}
.lede {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.6;
  max-width: 640px;
  margin: 14px auto 0;
}
.sec-foot {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
  text-align: center;
  margin-top: 28px;
}
.small-muted {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 14px;
}

/* ============ HERO ============ */
.hero {
  padding: 36px 0 40px;
}
.hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}
.hero-copy {
  text-align: center;
}
.hero h1 {
  font-size: clamp(38px, 7vw, 64px);
  line-height: 1.04;
  text-transform: none;
  margin-bottom: 16px;
}
.hero-sub {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.6;
  max-width: 560px;
  margin: 0 auto 24px;
}
.ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 14px;
}
.hero-meta {
  color: var(--text-dim);
  font-size: 14px;
}
.hero-phones {
  margin: 0;
  text-align: center;
}
.phones {
  position: relative;
  display: flex;
  justify-content: center;
}
.ph {
  display: block;
  height: auto;
  border-radius: 28px;
  border: 1px solid var(--surface-border);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
}
.ph-front {
  width: 230px;
  position: relative;
  z-index: 2;
}
.ph-left,
.ph-right {
  display: none;
}
.hero-phones figcaption {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 14px;
}
@media (min-width: 960px) {
  .hero {
    padding: 64px 0 56px;
  }
  .hero-grid {
    grid-template-columns: 1.05fr 1fr;
    gap: 40px;
  }
  .hero-copy {
    text-align: left;
  }
  .hero-sub {
    margin-left: 0;
  }
  .ctas {
    justify-content: flex-start;
  }
  .phones {
    height: 560px;
  }
  .ph-front {
    width: 256px;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
  }
  .ph-left,
  .ph-right {
    display: block;
    position: absolute;
    width: 214px;
    top: 48px;
    opacity: 0.92;
  }
  .ph-left {
    left: calc(50% - 250px);
    transform: rotate(-7deg);
  }
  .ph-right {
    left: calc(50% + 36px);
    transform: rotate(7deg);
  }
}

/* ============ WORKS WITH ============ */
.works-with {
  padding: 28px 0 8px;
  text-align: center;
}
.strip-label {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  max-width: 900px;
  margin: 0 auto;
}
.chips li {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--surface-border);
  background: var(--surface);
  font-size: 14px;
  color: var(--text);
}
.strip-note {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 12px;
}

/* ============ WHERE TANKS GO WRONG ============ */
.problem-list {
  list-style: none;
  display: grid;
  gap: 12px;
}
.problem-row {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
}
.problem {
  color: var(--text-muted);
  font-size: 15px;
}
.answer {
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
}
.answer strong {
  color: var(--cyan);
  font-weight: 600;
}
@media (min-width: 768px) {
  .problem-row {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 24px;
    align-items: center;
  }
}

/* ============ CARDS ============ */
.pillar-grid {
  display: grid;
  gap: 16px;
}
@media (min-width: 768px) {
  .pillar-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.pillar,
.how-step,
.device-card,
.pricing-card,
.about-card,
.panel {
  background: linear-gradient(160deg, rgba(150, 200, 255, 0.1) 0%, rgba(130, 190, 255, 0.03) 100%);
  border: 1px solid var(--surface-border);
  border-radius: 20px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
}
.pillar {
  padding: 26px 24px;
}
.num {
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.pillar h3,
.how-step h3 {
  margin-bottom: 10px;
}
.pillar p,
.how-step p,
.device-card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* ============ HOW ============ */
.how-grid {
  list-style: none;
  display: grid;
  gap: 16px;
}
@media (min-width: 900px) {
  .how-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.how-step {
  padding: 26px 24px;
}

/* ============ DOT LISTS ============ */
.dot-grid {
  list-style: none;
  display: grid;
  gap: 18px 32px;
}
@media (min-width: 700px) {
  .dot-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 1000px) {
  .dot-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
.dot-grid li {
  position: relative;
  padding-left: 22px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}
.dot-grid li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
}
.dot-grid li strong {
  color: var(--text);
  font-weight: 600;
}

/* ============ DISPLAYS ============ */
.device-cards {
  display: grid;
  gap: 16px;
  margin-bottom: 28px;
}
@media (min-width: 640px) {
  .device-cards {
    grid-template-columns: 1fr 1fr;
  }
  .device-cards-one {
    grid-template-columns: minmax(0, 360px);
    justify-content: center;
  }
}
.device-card {
  padding: 24px;
  text-align: center;
}

/* ============ VERSUS ============ */
.vs-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}
.vs-table th,
.vs-table td {
  padding: 14px 16px;
  text-align: left;
  font-size: 15px;
  line-height: 1.5;
  border-bottom: 1px solid var(--surface-border);
}
.vs-table thead th {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
}
.vs-table thead th:last-child {
  color: var(--cyan);
}
.vs-table tbody th {
  font-weight: 500;
  color: var(--text);
}
.vs-table td {
  color: var(--text-muted);
}
.vs-table td:last-child {
  color: var(--text);
}
@media (max-width: 699px) {
  .vs-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }
  .vs-table,
  .vs-table tbody,
  .vs-table tr,
  .vs-table th,
  .vs-table td {
    display: block;
    width: 100%;
  }
  .vs-table tr {
    padding: 16px 18px;
    margin-bottom: 12px;
    border-radius: 18px;
    background: var(--surface);
    border: 1px solid var(--surface-border);
  }
  .vs-table th,
  .vs-table td {
    border: none;
    padding: 3px 0;
  }
  .vs-table tbody th {
    margin-bottom: 6px;
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-size: 16px;
  }
  .vs-table td::before {
    content: attr(data-label) ': ';
    color: var(--text-dim);
  }
}

/* ============ ABOUT ============ */
.about-card {
  padding: 28px;
}
@media (min-width: 720px) {
  .about-card {
    padding: 36px;
  }
}
.about-body h2 {
  margin-bottom: 16px;
}
.about-body p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 14px;
}
.about-body .signoff {
  color: var(--text);
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 14px;
}

/* ============ PRICING ============ */
.pricing-card {
  padding: 36px 28px;
  text-align: center;
}
.pricing-card h2 {
  margin-bottom: 22px;
}
.pricing-list {
  list-style: none;
  text-align: left;
  max-width: 520px;
  margin: 0 auto 28px;
  display: grid;
  gap: 10px;
}
.pricing-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
.pricing-list li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
}
.pricing-card .note {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 520px;
  margin: 16px auto 0;
}

/* ============ FAQ ============ */
.faq-list {
  display: grid;
  gap: 10px;
}
.faq-item {
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  background: var(--surface);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 48px 18px 20px;
  position: relative;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.4;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cyan);
  font-size: 22px;
}
.faq-item[open] summary::after {
  content: '\2212';
}
.faq-item .a {
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ============ FINAL CTA ============ */
.final-cta h2 {
  margin-bottom: 4px;
}
.final-cta .lede {
  margin-bottom: 26px;
}

/* ============ FOOTER ============ */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 48px 0 40px;
  margin-top: 24px;
}
.footer-cols {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr 1fr;
}
@media (min-width: 860px) {
  .footer-cols {
    grid-template-columns: repeat(4, 1fr);
  }
}
.footer-h {
  font-family: 'Oswald', sans-serif;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 12px;
}
.footer-col ul {
  list-style: none;
  display: grid;
  gap: 4px;
}
.footer-col a,
.footer-col .linklike {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 15px;
  display: inline-block;
  padding: 6px 0;
}
.footer-col a:hover {
  color: var(--cyan);
}
.footer-legal {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
  margin-top: 32px;
}

/* ============ STICKY MOBILE CTA ============ */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 140;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(10, 24, 52, 0.9);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--surface-border);
}
.sticky-cta[hidden] {
  display: none;
}
.sticky-cta .btn {
  width: 100%;
}
@media (min-width: 768px) {
  .sticky-cta {
    display: none !important;
  }
}

/* ============ DISPLAY PAGE ============ */
.page-hero {
  padding: 56px 0 24px;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(36px, 6.5vw, 58px);
  line-height: 1.05;
  margin-bottom: 14px;
}
.check-list {
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto;
}
.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
}
.check-list li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-weight: 700;
}
.panel {
  padding: 32px 28px;
  max-width: 560px;
  margin: 0 auto;
}
.waitlist-form {
  display: grid;
  gap: 16px;
}
.waitlist-form label {
  display: block;
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.waitlist-form input[type='email'],
.waitlist-form select {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(6, 15, 36, 0.6);
  color: var(--text);
  border: 1px solid var(--surface-border);
  font: inherit;
  font-size: 16px;
}
.waitlist-form select option {
  color: #000;
}
.waitlist-form .hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.waitlist-form .btn {
  width: 100%;
}
.fine-print {
  color: var(--text-dim);
  font-size: 13px;
  text-align: center;
}
.waitlist-msg {
  display: none;
  font-size: 16px;
  line-height: 1.6;
  text-align: center;
}
.waitlist.joined .waitlist-msg {
  display: block;
  color: var(--text);
}
.waitlist.joined .waitlist-form {
  display: none;
}
.waitlist.error .waitlist-msg {
  display: block;
  color: var(--alert);
  margin-bottom: 12px;
}
.qa {
  max-width: 680px;
  margin: 0 auto;
  display: grid;
  gap: 22px;
}
.qa h3 {
  text-transform: none;
  font-size: 19px;
  margin-bottom: 6px;
}
.qa p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.65;
}
.breadcrumb {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.breadcrumb a {
  color: var(--text-muted);
}

/* ============ FORM + FEEDBACK MODAL (carried over) ============ */
/* ============ FORM (shared by feedback modal) ============ */
.signup-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.signup-form label {
  display: block;
  font-family: 'Oswald', sans-serif;
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.signup-form input[type='text'],
.signup-form input[type='email'],
.signup-form textarea {
  width: 100%;
  background: transparent;
  color: var(--text);
  border: none;
  border-bottom: 1px solid var(--surface-border);
  padding: 8px 0;
  font-size: 15px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color 0.2s;
  resize: none;
}
.signup-form input:focus,
.signup-form textarea:focus {
  border-bottom-color: var(--cyan);
}
.signup-form textarea {
  min-height: 60px;
  font-family: 'Inter', sans-serif;
}
.signup-form .pill-row {
  display: flex;
  gap: 8px;
}
.signup-form .pill {
  flex: 1;
  padding: 10px 12px;
  background: transparent;
  border: 1px solid var(--surface-border);
  color: var(--text-muted);
  border-radius: 12px;
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}
.signup-form .pill.active {
  background: rgba(125, 211, 255, 0.15);
  border-color: var(--cyan);
  color: var(--cyan);
}
.signup-form .submit {
  margin-top: 16px;
  padding: 16px;
  background: var(--cyan);
  color: var(--cyan-text);
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  letter-spacing: 0.15em;
  font-size: 13px;
  text-transform: uppercase;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  box-shadow: 0 20px 40px -15px rgba(125, 211, 255, 0.5);
  transition: transform 0.15s;
}
.signup-form .submit:hover:not(:disabled) {
  transform: translateY(-2px);
}
.signup-form .submit:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}
.signup-form .note {
  font-size: 11px;
  text-align: center;
  color: var(--text-dim);
  margin-top: 8px;
}
.signup-form .form-error {
  font-size: 13px;
  color: var(--alert);
  margin-top: 8px;
  min-height: 1.2em;
}
.signup-form .form-error:empty {
  display: none;
}
.label-hint {
  color: var(--cyan);
  font-weight: 400;
}
.label-hint--dim {
  color: var(--text-dim);
}

/* ============ FEEDBACK MODAL ============ */
.fb-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 20, 54, 0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.fb-overlay.open {
  display: flex;
}
.fb-modal {
  background: var(--blue-dark);
  border: 1px solid var(--cyan);
  border-radius: 24px;
  padding: 32px 28px;
  max-width: 440px;
  width: 100%;
  position: relative;
}
.fb-title {
  font-family: 'Oswald', sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.fb-modal p {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 20px;
  line-height: 1.55;
}
.fb-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.fb-close:hover {
  background: var(--surface);
  color: var(--text);
}
.fb-msg {
  min-height: 80px;
}
.fb-kinds {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.fb-kind {
  padding: 8px 14px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--surface-border);
  font-family: 'Oswald', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}
.fb-kind:hover {
  color: var(--text);
  border-color: var(--cyan);
}
.fb-kind.active {
  background: var(--cyan);
  color: var(--cyan-text, #001724);
  border-color: var(--cyan);
}
.fb-sev-label {
  font-family: 'Oswald', sans-serif;
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.fb-sevs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.fb-sev {
  padding: 6px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--surface-border);
  font-family: 'Oswald', sans-serif;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}
.fb-sev .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.fb-sev[data-sev='nice-to-have'] .dot {
  background: var(--text-muted);
}
.fb-sev[data-sev='annoying'] .dot {
  background: #ffc166;
}
.fb-sev[data-sev='blocking'] .dot {
  background: var(--alert);
}
.fb-sev.active {
  color: var(--text);
  background: var(--surface);
}
.fb-sev[data-sev='nice-to-have'].active {
  border-color: var(--text-muted);
}
.fb-sev[data-sev='annoying'].active {
  border-color: #ffc166;
}
.fb-sev[data-sev='blocking'].active {
  border-color: var(--alert);
}
.fb-photo-btn {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  background: transparent;
  border: 1px dashed var(--surface-border);
  border-radius: 10px;
  color: var(--text-muted);
  font-family: 'Oswald', sans-serif;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.15s;
}
.fb-photo-btn:hover {
  color: var(--text);
  border-color: var(--cyan);
}
.fb-photo-btn svg {
  width: 14px;
  height: 14px;
}
.fb-photo-preview {
  margin-top: 10px;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
  display: none;
}
.fb-photo-preview.show {
  display: block;
}
.fb-photo-preview img {
  width: 100%;
  max-height: 160px;
  object-fit: cover;
  display: block;
}
.fb-photo-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  font-family: 'Oswald', sans-serif;
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
}
.fb-done {
  display: none;
  text-align: center;
  padding: 10px;
}
.fb-done .kanji {
  width: 40px;
  height: 40px;
  margin: 0 auto 8px;
  display: block;
}
.fb-done .fb-title {
  margin-bottom: 8px;
}
.fb-done p {
  color: var(--text-muted);
  font-size: 13px;
}

/* ============ LEGAL PAGES (privacy, terms) ============ */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
  line-height: 1.65;
}
.legal-meta {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.legal h1 {
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1.1;
  margin-bottom: 14px;
}
.legal .intro {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}
.legal h2 {
  font-size: 19px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  margin: 34px 0 10px;
}
.legal p {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 14px;
}
.legal p strong,
.legal li strong {
  color: var(--text);
}
.legal ul {
  list-style: none;
  margin: 0 0 14px;
}
.legal ul li {
  color: var(--text-muted);
  font-size: 16px;
  padding: 6px 0 6px 22px;
  position: relative;
}
.legal ul li::before {
  content: '\00b7';
  color: var(--cyan);
  position: absolute;
  left: 8px;
  font-size: 22px;
  line-height: 1;
}
.legal a {
  color: var(--cyan);
}
.legal code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}
.legal .badge {
  display: inline-block;
  background: rgba(150, 198, 255, 0.1);
  color: var(--text-muted);
  border: 1px solid var(--surface-border);
  padding: 2px 9px;
  border-radius: 999px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  letter-spacing: 0.04em;
  margin-right: 8px;
}
.legal .gist {
  color: var(--text);
  font-style: italic;
}
.legal .conspicuous {
  color: var(--text);
  font-weight: 500;
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.01em;
}

/* ============ WHAT'S NEW ============ */
.rn-list {
  padding-bottom: 24px;
}
.rn-month h2 {
  font-size: 22px;
  margin: 32px 0 12px;
  color: var(--cyan);
}
.rn-entry {
  padding: 18px 0;
  border-bottom: 1px solid var(--surface-border);
}
.rn-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--text-dim);
}
.rn-kind,
.rn-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-family: 'Oswald', sans-serif;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid var(--surface-border);
  color: var(--text);
}
.rn-new {
  border-color: var(--cyan);
  color: var(--cyan);
}
.rn-fixed {
  border-color: #ffc166;
  color: #ffc166;
}
.rn-tag {
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0.02em;
  font-family: 'Inter', sans-serif;
}
.rn-entry h3 {
  text-transform: none;
  font-size: 19px;
  margin-bottom: 4px;
}
.rn-entry p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.6;
}
.rn-empty {
  color: var(--text-muted);
  text-align: center;
  padding: 32px 0;
}