@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

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

:root {
  --bg: #1c1c1c;
  --bg-card: #242424;
  --bg-card-alt: #2e2e2e;
  --border: rgba(99, 93, 90, 0.5);
  --text: #e9e0d1;
  --text-secondary: #d1c2a5;
  --text-muted: rgba(204, 189, 159, 0.5);
  --orange: #ff7038;
  --orange-hover: #de5d35;
  --radius-btn: 275px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Geist', -apple-system, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(36, 36, 36, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-logo {
  height: 28px;
  width: auto;
  vertical-align: middle;
  margin-right: 8px;
  background: #fff;
  border-radius: 6px;
  padding: 2px 6px;
}

.nav-brand-text {
  color: var(--orange);
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 14px;
  transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

/* ── HERO ── */
.hero {
  padding: 80px 20px 60px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 112, 56, 0.1);
  border: 1px solid rgba(255, 112, 56, 0.3);
  color: var(--orange);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 0;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--text);
}

.hero h1 .accent {
  color: var(--orange);
}

.hero p {
  font-size: clamp(15px, 3vw, 17px);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* ── CONVERTER BOX ── */
.converter {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 28px;
  max-width: 640px;
  margin: 0 auto;
}

.input-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.url-input {
  flex: 1;
  min-width: 0;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 14px 16px;
  border-radius: 0;
  outline: none;
  transition: border-color 0.15s;
  min-width: 200px;
}

.url-input::placeholder { color: var(--text-muted); }
.url-input:focus { border-color: var(--orange); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
  white-space: nowrap;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--orange);
  color: #1d1d1d;
}
.btn-primary:hover:not(:disabled) { background: var(--orange-hover); }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--text-secondary); }

.btn-orange {
  background: var(--orange);
  color: #1d1d1d;
}
.btn-orange:hover:not(:disabled) { background: var(--orange-hover); }

/* ── PROGRESS ── */
.progress-wrap {
  margin-top: 20px;
  display: none;
}

.progress-wrap.visible { display: block; }

.progress-bar-track {
  background: var(--bg-card-alt);
  border-radius: 0;
  height: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--orange);
  width: 0%;
  transition: width 0.4s ease;
}

.progress-status {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* ── RESULT ── */
.result-box {
  margin-top: 20px;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 16px 18px;
  display: none;
}

.result-box.visible { display: block; }

.result-box.error {
  border-color: rgba(255, 112, 56, 0.4);
  background: rgba(255, 112, 56, 0.06);
}

.result-box.truncated {
  border-color: rgba(255, 112, 56, 0.4);
}

.result-title {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.result-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.error-msg {
  font-size: 13px;
  color: var(--orange);
}

/* ── STEPS (BENTO GRID) ── */
.steps {
  max-width: 1200px;
  margin: 80px auto 0;
  padding: 0 20px;
}

.steps-header {
  text-align: center;
  margin-bottom: 0;
  padding: 36px 20px;
  border: 1px solid var(--border);
  border-bottom: none;
}

.steps-header h2 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.05em;
  color: var(--text);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
}

.step {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 36px 28px;
  text-align: left;
}

.step:last-child {
  border-right: none;
}

.step-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  font-weight: 500;
  color: var(--orange);
  margin-bottom: 16px;
  display: block;
}

.step h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ── LIMITS BANNER ── */
.limits {
  max-width: 1200px;
  margin: 40px auto 0;
  padding: 0 20px;
}

.limits-inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.limits-text h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.limits-text p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ── FOOTER ── */
footer {
  margin-top: 80px;
  border-top: 1px solid var(--border);
  padding: 28px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

footer a { color: var(--text-secondary); text-decoration: none; }
footer a:hover { color: var(--text); }

/* ── PAGE: ABOUT ── */
.page-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 24px;
}

.page-wrap h1 {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.05em;
  margin-bottom: 12px;
  color: var(--text);
}

.page-wrap .sub {
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-size: 17px;
  line-height: 1.6;
}

.page-wrap h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 14px;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-wrap p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.7;
}

.page-wrap a { color: var(--orange); text-decoration: none; }
.page-wrap a:hover { text-decoration: underline; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin: 20px 0;
  border: 1px solid var(--border);
}

.feature-card {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 24px;
}

.feature-card:nth-child(2n) {
  border-right: none;
}

.feature-card:nth-last-child(-n+2) {
  border-bottom: none;
}

.feature-card h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  margin: 0;
  color: var(--text-secondary);
}

/* ── PAGE: PRO ── */
.pro-hero {
  text-align: center;
  padding: 80px 20px 48px;
  max-width: 600px;
  margin: 0 auto;
}

.pro-hero h1 {
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 700;
  letter-spacing: -0.05em;
  margin-bottom: 16px;
  color: var(--text);
}

.pro-hero h1 .accent {
  color: var(--orange);
}

.pro-hero p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 0;
  line-height: 1.6;
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 640px;
  margin: 0 auto 48px;
  padding: 0 20px;
  border: 1px solid var(--border);
}

.plan {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  padding: 28px;
}

.plan:last-child {
  border-right: none;
}

.plan.pro-plan {
  border: 2px solid var(--orange);
  background: rgba(255, 112, 56, 0.04);
}

.plan-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.plan.pro-plan .plan-name { color: var(--orange); }

.plan ul {
  list-style: none;
  font-size: 14px;
}

.plan ul li {
  padding: 6px 0;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.plan ul li::before { content: '·'; color: var(--text-muted); flex-shrink: 0; }
.plan.pro-plan ul li::before { content: '✓'; color: var(--orange); }

.contact-form {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.contact-form h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  color: var(--text);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: 0;
  outline: none;
  transition: border-color 0.15s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--orange);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-success {
  background: rgba(255, 112, 56, 0.08);
  border: 1px solid rgba(255, 112, 56, 0.3);
  color: var(--orange);
  padding: 16px 18px;
  border-radius: 0;
  font-size: 14px;
  display: none;
  margin-top: 14px;
}

.form-success.visible { display: block; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  nav { padding: 0 16px; position: relative; }

  .nav-hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(28, 28, 28, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    gap: 0;
    z-index: 99;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    padding: 14px 24px;
    font-size: 15px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links a:last-child { border-bottom: none; }

  .hero { padding: 60px 16px 40px; }

  .converter { padding: 20px 16px; }

  .input-row { flex-direction: column; }
  .input-row .btn { width: 100%; border-radius: var(--radius-btn); }

  .steps-grid { grid-template-columns: 1fr; }
  .step { border-right: none; border-bottom: 1px solid var(--border); }
  .step:last-child { border-bottom: none; }

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

  .compare { grid-template-columns: 1fr; }
  .plan { border-right: none; border-bottom: 1px solid var(--border); }
  .plan:last-child { border-bottom: none; }
  .plan.pro-plan { border: 2px solid var(--orange); }

  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { border-right: none; }
  .feature-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--border); }
  .feature-card:last-child { border-bottom: none; }
}