/* ==========================================================================
   Don't Stop Collecting — Styles
   Mobile-first, single page, no dependencies
   ========================================================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1B2A4A;
  background: #fff;
}

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

a {
  color: #1B2A4A;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3 {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.15rem;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.75rem;
}

.section-title .subtitle {
  font-size: 1rem;
  font-weight: 700;
  opacity: 0.7;
}

.section-gray {
  background: #F5F5F5;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.1s ease;
  min-height: 48px;
  line-height: 1.3;
}

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

.btn-primary {
  background: #1B2A4A;
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-large {
  font-size: 1.1rem;
  padding: 16px 32px;
  width: 100%;
}

.btn-link {
  display: inline-block;
  color: #1B2A4A;
  font-size: 1rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 8px 0;
}

.btn-link:hover {
  opacity: 0.7;
}

.section-cta {
  text-align: center;
  margin-top: 2rem;
}

/* ==========================================================================
   STICKY HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid rgba(27, 42, 74, 0.1);
  transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(27, 42, 74, 0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 960px;
  margin: 0 auto;
  padding: 10px 20px;
}

.header-logo img {
  height: 40px;
  width: auto;
}

/* Logo swap: light mode shows dark logo (navy on white bg) */
.logo-light-mode {
  display: block;
}
.logo-dark-mode {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .logo-light-mode {
    display: none;
  }
  .logo-dark-mode {
    display: block;
  }
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #1B2A4A;
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  min-height: 40px;
  white-space: nowrap;
}

.header-cta:hover {
  opacity: 0.9;
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  padding: 100px 0 60px;
  text-align: center;
  background: #1B2A4A;
  color: #fff;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  opacity: 0.85;
  margin-bottom: 2rem;
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.5rem;
}

.hero .btn-primary {
  background: #fff;
  color: #1B2A4A;
}

.hero .btn-link {
  color: #fff;
  opacity: 0.85;
}

.trust-line {
  font-size: 0.95rem;
  opacity: 0.7;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   HOW IT WORKS
   ========================================================================== */
.how-it-works {
  padding: 60px 0;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.step {
  text-align: center;
}

.step-icon {
  margin-bottom: 1rem;
}

.step-icon svg {
  margin: 0 auto;
}

.step h3 {
  margin-bottom: 0.5rem;
}

.step p {
  max-width: 360px;
  margin: 0 auto;
  color: #444;
}

/* ==========================================================================
   WHAT WE BUY
   ========================================================================== */
.what-we-buy {
  padding: 60px 0;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: #1B2A4A;
  font-weight: 700;
  font-size: 1.1rem;
}

/* ==========================================================================
   WHO WE BUY FROM
   ========================================================================== */
.who-we-buy-from {
  padding: 60px 0;
}

.icon-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.icon-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  top: 0;
  color: #1B2A4A;
  font-weight: 700;
}

/* ==========================================================================
   WHY SELL TO US
   ========================================================================== */
.why-sell {
  padding: 60px 0;
}

.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 1.05rem;
}

.compare-x {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: #e74c3c;
  color: #fff;
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

.why-sell-summary {
  text-align: center;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  margin-top: 2rem;
  color: #1B2A4A;
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq {
  padding: 60px 0;
}

.accordion {
  max-width: 720px;
  margin: 0 auto;
}

.accordion-item {
  border-bottom: 1px solid rgba(27, 42, 74, 0.15);
}

.accordion-item:first-child {
  border-top: 1px solid rgba(27, 42, 74, 0.15);
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: #1B2A4A;
  font-family: inherit;
  line-height: 1.4;
  gap: 16px;
}

.accordion-trigger:hover {
  opacity: 0.8;
}

.accordion-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.2s ease;
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  max-height: 0;
  padding: 0 0 0 0;
}

.accordion-content[hidden] {
  display: block;
  max-height: 0;
  padding: 0;
}

.accordion-content:not([hidden]) {
  max-height: 300px;
  padding: 0 0 18px 0;
}

.accordion-content p {
  color: #444;
  line-height: 1.6;
}

/* ==========================================================================
   CONTACT FORM
   ========================================================================== */
.contact {
  padding: 60px 0;
}

.contact .container {
  max-width: 600px;
}

.section-sub {
  text-align: center;
  margin-bottom: 1.5rem;
  color: #444;
}

#contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-weight: 700;
  font-size: 0.95rem;
}

.required {
  color: #e74c3c;
}

.optional {
  font-weight: 400;
  opacity: 0.6;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 14px;
  border: 2px solid rgba(27, 42, 74, 0.2);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  color: #1B2A4A;
  background: #fff;
  transition: border-color 0.2s ease;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #1B2A4A;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%231B2A4A' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

#contact-form .btn {
  margin-top: 4px;
}

.form-error {
  color: #c62828;
  background: #ffebee;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  font-weight: 600;
}

.form-success {
  text-align: center;
  padding: 24px;
  background: #e8f5e9;
  border-radius: 8px;
  margin-top: 20px;
}

.form-success p {
  color: #2e7d32;
  font-weight: 700;
  font-size: 1.05rem;
}

.form-note {
  text-align: center;
  margin-top: 16px;
  font-size: 0.9rem;
  opacity: 0.6;
}

/* Hide note when success is shown */
.form-note.hidden {
  display: none;
}

/* ==========================================================================
   FOUNDER'S NOTE
   ========================================================================== */
.founder {
  padding: 60px 0;
}

.founder-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}

.founder-photo-placeholder {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(27, 42, 74, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.founder-photo-placeholder span {
  font-size: 0.85rem;
  opacity: 0.5;
}

.founder-text p {
  margin-bottom: 1rem;
  color: #444;
}

.founder-text p:last-child {
  margin-bottom: 0;
}

.founder-sign {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: #1B2A4A !important;
  margin-top: 0.5rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #1B2A4A;
  color: #fff;
  padding: 48px 0 32px;
  text-align: center;
}

.footer-logo {
  margin-bottom: 24px;
}

.footer-logo img {
  margin: 0 auto;
  height: 60px;
  width: auto;
}

.site-footer a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer a:hover {
  opacity: 0.8;
}

.footer-contact {
  margin-bottom: 20px;
}

.footer-contact p {
  margin-bottom: 4px;
}

.footer-area {
  margin-bottom: 24px;
}

.footer-cities {
  font-size: 0.85rem;
  opacity: 0.7;
  max-width: 500px;
  margin: 8px auto 0;
  line-height: 1.5;
}

.footer-copy {
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ==========================================================================
   DESKTOP BREAKPOINTS
   ========================================================================== */
@media (min-width: 640px) {
  h1 {
    font-size: 2.5rem;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero h1 {
    font-size: 2.75rem;
  }

  .hero-subtitle {
    font-size: 1.35rem;
  }

  .btn-large {
    width: auto;
    min-width: 320px;
  }

  .steps {
    flex-direction: row;
    gap: 2rem;
  }

  .step {
    flex: 1;
  }

  .section-title {
    font-size: 2rem;
  }
}

@media (min-width: 768px) {
  .hero {
    padding: 140px 0 100px;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .founder-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 3rem;
  }

  .founder-text {
    flex: 1;
  }

  .check-list,
  .icon-list {
    columns: 2;
    column-gap: 3rem;
  }

  .check-list li,
  .icon-list li {
    break-inside: avoid;
  }
}

@media (min-width: 1024px) {
  .header-logo img {
    height: 48px;
  }

  .hero h1 {
    font-size: 3.25rem;
  }
}