* {
  box-sizing: border-box;
}

:root {
  --navy: #0f1f3d;
  --blue: #1f5fa8;
  --light-blue: #eef4ff;
  --bg: #f5f7fb;
  --text: #172033;
  --muted: #46566f;
  --border: #dfe7f2;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(13, 28, 62, .10);
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--blue);
  text-decoration: none;
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

/* Header */

.site-header {
  background: var(--navy);
  color: #fff;
  padding: 16px 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  color: #fff;
  font-weight: 800;
  font-size: 23px;
}

nav {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

nav a {
  color: #dbe7ff;
  font-weight: 700;
}

.nav-btn {
  background: #ffffff;
  color: var(--navy);
  padding: 9px 14px;
  border-radius: 8px;
}

/* General */

.section {
  padding: 54px 0;
}

.section h2 {
  font-size: 34px;
  margin: 0 0 18px;
}

.section-intro {
  max-width: 780px;
  margin: -4px 0 26px;
  color: var(--muted);
  font-size: 18px;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 800;
  color: #dbe7ff;
}

.eyebrow.dark {
  color: var(--blue);
}

.btn {
  display: inline-block;
  background: #ffffff;
  color: var(--navy);
  padding: 13px 18px;
  border-radius: 10px;
  font-weight: 800;
  border: 0;
  cursor: pointer;
}

.btn.secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.75);
}

.btn.full {
  display: block;
  text-align: center;
}

/* Home page */

.hero {
  padding: 72px 0;
  background: linear-gradient(135deg, #10234a, #1f5fa8);
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 34px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.05;
  margin: 0 0 18px;
}

.hero-subtitle,
.hero p {
  font-size: 20px;
  max-width: 760px;
  margin: 0 0 24px;
}

.btn-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.card,
.page-card {
  background: #fff;
  border-radius: 18px;
  padding: 30px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.mock-phone {
  background: #ffffff;
  color: var(--text);
  border-radius: 22px;
  padding: 22px;
}

.mock-phone h3 {
  margin-top: 0;
}

.message-box {
  background: var(--light-blue);
  border-left: 5px solid var(--blue);
  padding: 16px;
  border-radius: 10px;
  margin: 14px 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature,
.message-type,
.mini-card {
  background: #fff;
  border-radius: 16px;
  padding: 22px;
  border: 1px solid var(--border);
}

.alt {
  background: #fff;
}

.mini-card {
  background: var(--bg);
  font-weight: 800;
}

.message-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.message-type h3 {
  margin-top: 0;
}

.store-card {
  background: #fff;
  border-radius: 20px;
  padding: 34px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 28px;
  align-items: center;
}

.store-panel {
  background: var(--light-blue);
  border-radius: 16px;
  padding: 24px;
  border: 1px solid #d7e5ff;
}

.store-panel h3 {
  margin-top: 0;
}

/* App Prototype */

.app-hero {
  padding: 48px 0;
  background: linear-gradient(135deg, #10234a, #1f5fa8);
  color: #fff;
}

.app-hero h1 {
  font-size: clamp(32px, 4vw, 50px);
  line-height: 1.1;
  margin: 0 0 14px;
}

.app-hero p {
  max-width: 760px;
  font-size: 19px;
  margin: 0;
}

.app-section {
  padding-top: 36px;
}

.app-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 24px;
  align-items: start;
}

.app-form {
  display: grid;
  gap: 18px;
}

.form-card,
.output-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.form-card h2,
.output-card h2 {
  margin: 0 0 18px;
  font-size: 27px;
}

label {
  display: block;
  font-weight: 800;
  margin: 14px 0 7px;
  color: var(--text);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #ccd6e6;
  border-radius: 10px;
  padding: 12px 13px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(31, 95, 168, .18);
  border-color: var(--blue);
}

textarea {
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.app-btn {
  width: 100%;
  margin-top: 18px;
  background: var(--blue);
  color: #fff;
}

.output-card {
  position: sticky;
  top: 18px;
}

.output-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: start;
  margin-bottom: 14px;
}

.output-header .eyebrow {
  margin-bottom: 6px;
}

.copy-btn,
.small-btn {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
  background: var(--navy);
  color: #fff;
}

#generatedMessage {
  min-height: 280px;
  background: #f8fbff;
  line-height: 1.55;
}

.output-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.small-btn {
  background: var(--light-blue);
  color: var(--navy);
  border: 1px solid #d7e5ff;
}

.app-note {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 0;
}

/* Footer */

.site-footer {
  background: var(--navy);
  color: #dbe7ff;
  padding: 28px 0;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: start;
}

.footer-grid h3 {
  color: #fff;
  margin: 0 0 8px;
}

.footer-grid p,
.footer-bottom p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-links a {
  color: #dbe7ff;
  font-weight: 700;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15);
  margin-top: 22px;
  padding-top: 18px;
  font-size: 14px;
}

/* Mobile */

@media (max-width: 1000px) {
  .app-layout,
  .hero-grid,
  .store-card {
    grid-template-columns: 1fr;
  }

  .output-card {
    position: static;
  }
}

@media (max-width: 900px) {
  .grid-4,
  .message-grid {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .wrap {
    width: min(100% - 24px, 1120px);
  }

  .site-header {
    padding: 15px 0;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    font-size: 20px;
  }

  nav {
    width: 100%;
    gap: 10px;
  }

  nav a {
    font-size: 14px;
  }

  .nav-btn {
    padding: 7px 11px;
  }

  .hero,
  .app-hero {
    padding: 44px 0;
  }

  .hero h1,
  .app-hero h1 {
    font-size: 35px;
  }

  .hero-subtitle,
  .app-hero p {
    font-size: 18px;
  }

  .btn,
  .copy-btn,
  .small-btn {
    width: 100%;
    text-align: center;
  }

  .grid-4,
  .message-grid,
  .footer-grid,
  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .section {
    padding: 42px 0;
  }

  .section h2 {
    font-size: 30px;
  }

  .page-card,
  .store-card,
  .form-card,
  .output-card {
    padding: 22px;
  }

  .output-header,
  .output-actions {
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .hero h1,
  .app-hero h1 {
    font-size: 32px;
  }

  .message-box {
    font-size: 15px;
  }
}

/* Extra app form polish */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 700px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* SMS character count */

.sms-count-box {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: #eef4ff;
  border: 1px solid #d7e5ff;
  color: #0f1f3d;
  font-size: 14px;
  font-weight: 800;
}

.sms-divider {
  margin: 0 8px;
  color: #6b7890;
}

.sms-warning {
  background: #fff8e6;
  border-color: #f0cf75;
  color: #6f4b00;
}

.sms-danger {
  background: #fff0f0;
  border-color: #e3a0a0;
  color: #8a1f1f;
}

/* Save business details */

.business-save-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.small-btn.light {
  background: #ffffff;
  color: #0f1f3d;
  border: 1px solid #ccd6e6;
}

.saved-status {
  margin: 10px 0 0;
  color: #46566f;
  font-size: 14px;
}

@media (max-width: 700px) {
  .business-save-actions {
    flex-direction: column;
  }
}

/* Business type dropdown polish */

#businessType {
  font-weight: 700;
}

/* Copy version buttons */

.copy-version-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0 0 14px;
}

.copy-version-actions .small-btn {
  width: 100%;
}

@media (max-width: 700px) {
  .copy-version-actions {
    grid-template-columns: 1fr;
  }
}

/* Message preview mode */

.preview-mode {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid #dfe7f2;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.preview-header h3 {
  margin: 0;
  font-size: 22px;
}

.preview-card {
  background: #f8fbff;
  border: 1px solid #d7e5ff;
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
}

.preview-title-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}

.preview-title-row h4 {
  margin: 0;
  font-size: 16px;
}

.preview-card p {
  margin: 0;
  color: #172033;
  font-size: 14px;
  line-height: 1.5;
}

.mini-copy-btn {
  border: 0;
  border-radius: 8px;
  padding: 7px 10px;
  font-weight: 800;
  cursor: pointer;
  background: #0f1f3d;
  color: #fff;
  font-size: 13px;
}

.preview-sms-count {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 9px;
  background: #eef4ff;
  border: 1px solid #d7e5ff;
  color: #0f1f3d;
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 700px) {
  .preview-header,
  .preview-title-row {
    flex-direction: column;
    align-items: stretch;
  }

  .mini-copy-btn {
    width: 100%;
  }
}

/* Preview-only output panel */

.preview-only-card {
  padding: 24px;
}

.preview-mode-main {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.preview-mode-main .preview-header h2 {
  margin: 0;
  font-size: 27px;
}

.preview-mode-main .preview-card {
  background: #ffffff;
}

.preview-actions {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #dfe7f2;
}

/* Quick note dropdown */

#quickNote {
  font-weight: 700;
}