/* ─── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --bg:       #0c0c0e;
  --bg2:      #131316;
  --bg3:      #1c1c21;
  --border:   #2a2a32;
  --text:     #e8e8f0;
  --muted:    #6b6b80;
  --accent:   #7c6af7;
  --accent-h: #9b8cff;
  --danger:   #f76a6a;
  --success:  #6af79b;
  --mono:     'DM Mono', monospace;
  --serif:    'Instrument Serif', Georgia, serif;
  --radius:   10px;
  --max-w:    720px;
}

/* ─── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

/* ─── Nav ───────────────────────────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(12,12,14,0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  opacity: 0.9;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 1; }

.nav-links { display: flex; gap: 1.5rem; }

.nav-link {
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }

/* ─── Main ──────────────────────────────────────────────────────────────────── */
main { flex: 1; }

/* ─── Hero (index) ──────────────────────────────────────────────────────────── */
.hero {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-w);
  width: 100%;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  font-family: var(--mono);
}

.hero-title {
  font-family: var(--serif);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 400;
  line-height: 1.0;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1.75rem;
}

.hero-title em {
  font-style: italic;
  color: var(--accent-h);
}

.hero-sub {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 400px;
}

.hero-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

/* ─── Deco grid ─────────────────────────────────────────────────────────────── */
.hero-deco {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.deco-grid {
  position: absolute;
  right: -10%;
  top: 10%;
  width: 55%;
  height: 80%;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 70% 80% at 70% 50%, black 30%, transparent 100%);
}

/* ─── Shortener hero ────────────────────────────────────────────────────────── */
.shortener-hero {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5rem 2rem 4rem;
}

.sh-inner {
  width: 100%;
  max-width: var(--max-w);
}

.sh-title {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
}

.sh-title em {
  font-style: italic;
  color: var(--accent-h);
}

/* ─── Form ──────────────────────────────────────────────────────────────────── */
.sh-form { display: flex; flex-direction: column; gap: 1.25rem; }

.input-group { display: flex; flex-direction: column; gap: 0.45rem; }

.input-label {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.optional {
  font-size: 0.68rem;
  color: var(--muted);
  opacity: 0.6;
  text-transform: none;
  letter-spacing: 0;
}

.sh-input {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.85rem 1rem;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sh-input::placeholder { color: var(--muted); opacity: 0.5; }

.sh-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,106,247,0.12);
}

.slug-wrap {
  display: flex;
  align-items: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.slug-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,106,247,0.12);
}

.slug-prefix {
  font-size: 0.8rem;
  color: var(--muted);
  padding: 0.85rem 0 0.85rem 1rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.sh-input--slug {
  border: none;
  border-radius: 0;
  padding-left: 0.15rem;
  box-shadow: none !important;
  flex: 1;
}

.sh-input--slug:focus { border-color: transparent; }

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.75rem 1.4rem;
  transition: background 0.2s, transform 0.15s, opacity 0.2s;
  text-decoration: none;
}

.btn-primary:hover { background: var(--accent-h); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-large { padding: 1rem 1.75rem; font-size: 0.9rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.6rem 1.1rem;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--text); color: var(--text); }

/* Loading state */
.btn-loader {
  display: none;
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.loading .btn-text { display: none; }
.loading .btn-loader { display: block; }
.loading { pointer-events: none; opacity: 0.75; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Error ─────────────────────────────────────────────────────────────────── */
.error-msg {
  font-size: 0.8rem;
  color: var(--danger);
  min-height: 1.2rem;
}

/* ─── Result ────────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

.sh-result {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-label {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.result-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}

.result-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-h);
  word-break: break-all;
  flex: 1;
  transition: color 0.2s;
}
.result-link:hover { color: #fff; }

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem;
  flex-shrink: 0;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { background: rgba(106,247,155,0.1); border-color: var(--success); color: var(--success); }

.result-original {
  font-size: 0.78rem;
  color: var(--muted);
  word-break: break-all;
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

.footer-sep { opacity: 0.4; }

.footer-link {
  color: var(--muted);
  transition: color 0.2s;
}
.footer-link:hover { color: var(--text); }

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav { padding: 1rem 1.25rem; }
  .hero, .shortener-hero { padding: 3rem 1.25rem; }
  .footer { padding: 1rem 1.25rem; }
  .deco-grid { display: none; }
}