/* LinkShor Frontend Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--ls-text);
  background: var(--ls-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ls-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--ls-primary-hover); }

.ls-container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Buttons */
.ls-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.75rem 1.75rem; border-radius: 0.5rem; font-weight: 600;
  font-size: 0.938rem; transition: all .2s; cursor: pointer; border: none;
  text-decoration: none; line-height: 1.4;
}
.ls-btn-primary { background: var(--ls-primary); color: #fff; }
.ls-btn-primary:hover { background: var(--ls-primary-hover); color: #fff; }
.ls-btn-outline { background: transparent; border: 2px solid var(--ls-primary); color: var(--ls-primary); }
.ls-btn-outline:hover { background: var(--ls-primary); color: #fff; }
.ls-btn-white { background: var(--ls-surface); color: var(--ls-ink); border: 1px solid var(--ls-border); }
.ls-btn-white:hover { border-color: var(--ls-primary); color: var(--ls-primary); }
.ls-btn-sm { padding: 0.5rem 1.25rem; font-size: 0.875rem; }

/* Nav */
.ls-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: color-mix(in srgb, var(--ls-surface) 95%, transparent); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ls-border); padding: 0.875rem 0;
}
.ls-nav-inner { display: flex; align-items: center; justify-content: space-between; }
.ls-nav-brand { font-size: 1.5rem; font-weight: 800; color: var(--ls-ink); }
.ls-nav-brand:hover { color: var(--ls-ink); }
.ls-nav-links { display: flex; align-items: center; gap: 2rem; }
.ls-nav-links a { color: var(--ls-text); font-weight: 500; font-size: 0.938rem; }
.ls-nav-links a:hover { color: var(--ls-primary); }
.ls-nav-actions { display: flex; align-items: center; gap: 0.75rem; }
.ls-nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--ls-ink); }

/* Hero */
.ls-hero {
  padding: 8rem 0 4rem; background: linear-gradient(180deg, var(--ls-surface) 0%, var(--ls-bg) 100%);
  text-align: center;
}
.ls-hero h1 {
  font-size: 3.25rem; font-weight: 800; color: var(--ls-ink);
  line-height: 1.15; margin-bottom: 1.25rem; max-width: 720px; margin-left: auto; margin-right: auto;
}
.ls-hero p {
  font-size: 1.125rem; color: var(--ls-muted); max-width: 640px;
  margin: 0 auto 2.5rem; line-height: 1.7;
}

/* Shortener */
.ls-shortener {
  max-width: 680px; margin: 0 auto; background: var(--ls-surface);
  border-radius: 1rem; padding: 1.5rem; box-shadow: var(--ls-shadow-md);
  border: 1px solid var(--ls-border);
}
.ls-shortener-form { display: flex; gap: 0.75rem; }
.ls-shortener-input {
  flex: 1; padding: 0.875rem 1rem; border: 1px solid var(--ls-border);
  border-radius: 0.5rem; font-size: 1rem; outline: none; transition: border-color .2s;
}
.ls-shortener-input:focus { border-color: var(--ls-primary); }
.ls-shortener-input::placeholder { color: #94A3B8; }
.ls-shortener-result {
  margin-top: 1rem; padding: 1rem; background: #F0FDF4; border: 1px solid #BBF7D0;
  border-radius: 0.5rem; display: none; align-items: center; justify-content: space-between;
}
.ls-shortener-result.active { display: flex; }
.ls-shortener-result a { font-weight: 600; color: var(--ls-primary); word-break: break-all; }
.ls-shortener-error {
  margin-top: 0.75rem; padding: 0.75rem 1rem; background: #FEF2F2; border: 1px solid #FECACA;
  border-radius: 0.5rem; color: #DC2626; font-size: 0.875rem; display: none;
}
.ls-shortener-error.active { display: block; }

/* Feature Strip */
.ls-features-strip {
  padding: 3rem 0; border-bottom: 1px solid var(--ls-border);
}
.ls-features-strip-inner {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 2.5rem;
}
.ls-feature-pill {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.938rem; font-weight: 500; color: var(--ls-muted);
}
.ls-feature-pill i { font-size: 1.125rem; color: var(--ls-primary); }

/* Sections */
.ls-section { padding: 5rem 0; }
.ls-section-alt { background: var(--ls-surface); }
.ls-section-header { text-align: center; margin-bottom: 3rem; }
.ls-section-header h2 { font-size: 2.25rem; font-weight: 700; color: var(--ls-ink); margin-bottom: 0.75rem; }
.ls-section-header p { font-size: 1.0625rem; color: var(--ls-muted); max-width: 600px; margin: 0 auto; }

/* Feature Grid */
.ls-grid { display: grid; gap: 1.5rem; }
.ls-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ls-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ls-grid-4 { grid-template-columns: repeat(4, 1fr); }

.ls-card {
  background: var(--ls-surface); border: 1px solid var(--ls-border);
  border-radius: 0.75rem; padding: 2rem; transition: box-shadow .2s, border-color .2s;
}
.ls-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.06); border-color: #CBD5E1; }
.ls-card-icon {
  width: 3rem; height: 3rem; border-radius: 0.5rem; display: flex;
  align-items: center; justify-content: center; margin-bottom: 1rem; font-size: 1.25rem;
}
.ls-card-icon-blue { background: #EFF6FF; color: var(--ls-primary); }
.ls-card-icon-cyan { background: #ECFEFF; color: var(--ls-cyan); }
.ls-card-icon-green { background: #F0FDF4; color: var(--ls-green); }
.ls-card-icon-purple { background: #F5F3FF; color: var(--ls-purple); }
.ls-card-icon-amber { background: #FFFBEB; color: var(--ls-amber); }
.ls-card-icon-ink { background: #F1F5F9; color: var(--ls-ink); }
.ls-card h3 { font-size: 1.125rem; font-weight: 600; color: var(--ls-ink); margin-bottom: 0.5rem; }
.ls-card p { font-size: 0.938rem; color: var(--ls-muted); line-height: 1.6; }

/* Pricing */
.ls-pricing-toggle { display: flex; justify-content: center; gap: 0.5rem; margin-bottom: 2.5rem; }
.ls-pricing-toggle a {
  padding: 0.5rem 1.25rem; border-radius: 2rem; font-size: 0.875rem;
  font-weight: 500; border: 1px solid var(--ls-border); color: var(--ls-text);
}
.ls-pricing-toggle a:hover { border-color: var(--ls-primary); color: var(--ls-primary); }
.ls-pricing-toggle a.active { background: var(--ls-primary); color: #fff; border-color: var(--ls-primary); }

.ls-price-card {
  background: var(--ls-surface); border: 1px solid var(--ls-border);
  border-radius: 1rem; padding: 2.5rem 2rem; text-align: center;
}
.ls-price-card-name { font-size: 1.25rem; font-weight: 600; color: var(--ls-ink); margin-bottom: 1rem; }
.ls-price-card-price { font-size: 2.75rem; font-weight: 800; color: var(--ls-ink); }
.ls-price-card-price .currency { font-size: 1.5rem; vertical-align: super; }
.ls-price-card-price .period { font-size: 0.938rem; font-weight: 400; color: var(--ls-muted); }
.ls-price-card-divider { height: 1px; background: var(--ls-border); margin: 1.5rem 0; }
.ls-price-card ul { list-style: none; padding: 0; text-align: left; margin-bottom: 2rem; }
.ls-price-card ul li {
  padding: 0.5rem 0; font-size: 0.938rem; color: var(--ls-text);
  display: flex; align-items: flex-start; gap: 0.5rem;
}
.ls-price-card ul li i { color: var(--ls-green); margin-top: 0.2rem; }

/* FAQ */
.ls-faq-item { border-bottom: 1px solid var(--ls-border); padding: 1.5rem 0; }
.ls-faq-q {
  font-size: 1.0625rem; font-weight: 600; color: var(--ls-ink); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
}
.ls-faq-q:after { content: '+'; font-size: 1.5rem; color: var(--ls-muted); transition: transform .2s; }
.ls-faq-item.open .ls-faq-q:after { content: '-'; }
.ls-faq-a { padding-top: 0.75rem; color: var(--ls-muted); font-size: 0.938rem; line-height: 1.7; display: none; }
.ls-faq-item.open .ls-faq-a { display: block; }

/* CTA */
.ls-cta {
  padding: 5rem 0; text-align: center;
  background: linear-gradient(135deg, var(--ls-ink) 0%, #1E293B 100%);
  color: #fff;
}
.ls-cta h2 { font-size: 2.25rem; font-weight: 700; margin-bottom: 1rem; color: #fff; }
.ls-cta p { color: #94A3B8; font-size: 1.0625rem; margin-bottom: 2rem; max-width: 500px; margin-left: auto; margin-right: auto; }

/* Footer */
.ls-footer { background: #08111F; color: #94A3B8; padding: 4rem 0 2rem; }
.ls-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.ls-footer-brand { font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 0.75rem; }
.ls-footer-desc { font-size: 0.938rem; line-height: 1.7; }
.ls-footer h4 { color: #fff; font-size: 0.938rem; font-weight: 600; margin-bottom: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }
.ls-footer ul { list-style: none; padding: 0; }
.ls-footer ul li { margin-bottom: 0.5rem; }
.ls-footer ul li a { color: #94A3B8; font-size: 0.938rem; }
.ls-footer ul li a:hover { color: #fff; }
.ls-footer-bottom { border-top: 1px solid #1E293B; padding-top: 2rem; font-size: 0.875rem; text-align: center; }

/* Form elements */
.ls-form-group { margin-bottom: 1.25rem; }
.ls-form-group label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--ls-text); margin-bottom: 0.375rem; }
.ls-form-control {
  width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--ls-border);
  border-radius: 0.5rem; font-size: 0.938rem; outline: none; transition: border-color .2s;
  font-family: inherit;
}
.ls-form-control:focus { border-color: var(--ls-primary); }
textarea.ls-form-control { min-height: 120px; resize: vertical; }

/* Legal pages */
.ls-legal { padding: 8rem 0 4rem; }
.ls-legal h1 { font-size: 2.5rem; font-weight: 700; color: var(--ls-ink); margin-bottom: 2rem; }
.ls-legal-content { max-width: 800px; margin: 0 auto; }
.ls-legal-content p { margin-bottom: 1rem; line-height: 1.8; }
.ls-legal-content h2, .ls-legal-content h3 { color: var(--ls-ink); margin-top: 2rem; margin-bottom: 0.75rem; }
.ls-legal-content ul, .ls-legal-content ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.ls-legal-content li { margin-bottom: 0.5rem; }

/* Alerts */
.ls-alert { padding: 0.875rem 1.25rem; border-radius: 0.5rem; margin-bottom: 1rem; font-size: 0.938rem; }
.ls-alert-danger { background: #FEF2F2; border: 1px solid #FECACA; color: #DC2626; }
.ls-alert-success { background: #F0FDF4; border: 1px solid #BBF7D0; color: #166534; }

/* Mobile */
@media (max-width: 768px) {
  .ls-nav-links { display: none; }
  .ls-nav-toggle { display: block; }
  .ls-nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: var(--ls-surface); padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--ls-border); gap: 1rem;
  }
  .ls-hero { padding: 6rem 0 3rem; }
  .ls-hero h1 { font-size: 2.25rem; }
  .ls-shortener-form { flex-direction: column; }
  .ls-grid-2, .ls-grid-3, .ls-grid-4 { grid-template-columns: 1fr; }
  .ls-footer-grid { grid-template-columns: 1fr; }
  .ls-features-strip-inner { gap: 1.5rem; }
  .ls-section { padding: 3rem 0; }
  .ls-nav-actions .ls-btn { display: none; }
  .ls-nav-actions .ls-btn-sm { display: inline-flex; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .ls-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .ls-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* Spinner */
.ls-spinner { display: inline-block; width: 1rem; height: 1rem; border: 2px solid rgba(255,255,255,0.3); border-radius: 50%; border-top-color: #fff; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }