/* ============================================
   link.takk.space — Encurtador de Links
   Web3/DeFi Dark Theme
   ============================================ */

:root {
  --bg: #030304;
  --surface: #0F1115;
  --fg: #FFFFFF;
  --muted: #94A3B8;
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(247, 147, 26, 0.5);
  --orange: #F7931A;
  --orange-dark: #EA580C;
  --gold: #FFD600;
  --glow-orange: rgba(234, 88, 12, 0.5);
  --glow-soft: rgba(247, 147, 26, 0.15);

  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --container: 640px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;
}

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

body {
  font-family: var(--font-body);
  color: var(--fg);
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ==================== Background ==================== */
.bg-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-size: 50px 50px;
  background-image:
    linear-gradient(to right, rgba(30,41,59,.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,41,59,.5) 1px, transparent 1px);
  mask-image: radial-gradient(circle at 50% 30%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 20%, transparent 70%);
}

.glow-blob { position: fixed; pointer-events: none; z-index: 0; border-radius: 50%; filter: blur(120px); }
.glow-1 { width: 500px; height: 500px; top: -150px; left: 50%; transform: translateX(-50%); background: var(--orange); opacity: 0.06; }
.glow-2 { width: 300px; height: 300px; bottom: 10%; right: 10%; background: var(--gold); opacity: 0.03; }

/* ==================== Container ==================== */
.container {
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.center { text-align: center; }

/* ==================== Nav ==================== */
.nav { padding: 14px 0; position: relative; z-index: 10; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1280px; margin: 0 auto; padding: 0 20px; }

.nav-brand {
  font-family: var(--font-heading); font-weight: 600; font-size: 1rem;
  color: var(--fg); text-decoration: none; display: flex; align-items: center; gap: 8px;
}
.nav-icon { color: var(--orange); }

.nav-links { display: flex; gap: 4px; }
.nav-link {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted);
  text-decoration: none; padding: 8px 16px; border-radius: var(--radius-full);
  border: 1px solid transparent; transition: color 200ms, border-color 200ms, background 200ms;
}
.nav-link:hover { color: var(--fg); border-color: var(--border); background: rgba(255,255,255,0.05); }

/* ==================== Main ==================== */
.main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 40px 0;
}

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--orange);
  letter-spacing: 0.05em; text-transform: uppercase;
  background: rgba(247,147,26,0.1); border: 1px solid rgba(247,147,26,0.3);
  border-radius: var(--radius-full); padding: 6px 16px; margin-bottom: 20px;
}
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); animation: pulse-dot 2s ease-in-out infinite; }
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }

.title {
  font-family: var(--font-heading); font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 12px;
}

.gradient-text {
  background: linear-gradient(to right, var(--orange), var(--gold));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.05rem; color: var(--muted); margin-bottom: 32px;
}

/* ==================== Card ==================== */
.card {
  background: rgba(15,17,21,0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: 0 0 50px -10px var(--glow-soft);
  transition: border-color 300ms;
  text-align: left;
}

/* ==================== Input state ==================== */
.url-input {
  width: 100%;
  padding: 18px 20px;
  background: rgba(0,0,0,0.5);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--fg);
  outline: none;
  transition: border-color 200ms, box-shadow 200ms;
}

.url-input::placeholder { color: rgba(255,255,255,0.25); }
.url-input:focus { border-color: var(--orange); box-shadow: 0 0 20px -5px var(--glow-orange); }
.url-input.invalid { border-color: #ef4444; }

.error-msg {
  font-family: var(--font-mono); font-size: 0.75rem; color: #ef4444;
  margin-top: 8px; text-align: left;
}

.btn-shorten {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; margin-top: 16px; padding: 18px 32px;
  background: linear-gradient(to right, var(--orange-dark), var(--orange));
  color: white; border: none; border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: 1rem; font-weight: 600;
  cursor: pointer; box-shadow: 0 0 20px -5px var(--glow-orange);
  transition: transform 300ms, box-shadow 300ms; min-height: 52px;
}

.btn-shorten:hover { transform: scale(1.02); box-shadow: 0 0 30px -5px rgba(247,147,26,0.6); }
.btn-shorten:active { transform: scale(0.98); }
.btn-shorten:disabled { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-shorten:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

/* ==================== Result state ==================== */
.result-state { animation: fade-in 0.3s ease; }
@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.result-label {
  font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--muted); margin-bottom: 12px; text-align: center;
}

.copy-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 18px 20px;
  background: rgba(247,147,26,0.1); border: 2px solid rgba(247,147,26,0.3);
  border-radius: var(--radius-lg); color: var(--orange);
  font-family: var(--font-mono); font-size: 1rem; font-weight: 500;
  cursor: pointer; transition: background 200ms, border-color 200ms; min-height: 52px;
}

.copy-btn:hover { background: rgba(247,147,26,0.2); border-color: var(--orange); }
.copy-btn:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

.copy-feedback {
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--orange);
  margin-top: 10px; text-align: center; animation: fade-out 1.5s ease forwards;
}
@keyframes fade-out { 0% { opacity: 0; } 20% { opacity: 1; } 80% { opacity: 1; } 100% { opacity: 0; } }

.result-meta {
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 6px;
}

.meta-item { display: flex; justify-content: space-between; align-items: center; }
.meta-label { font-family: var(--font-mono); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.meta-value { font-family: var(--font-mono); font-size: 0.75rem; color: var(--fg); max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.btn-new {
  width: 100%; margin-top: 16px; padding: 14px 20px;
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); border-radius: var(--radius-full);
  font-family: var(--font-mono); font-size: 0.8rem; cursor: pointer;
  transition: color 200ms, border-color 200ms; min-height: 44px;
}
.btn-new:hover { color: var(--fg); border-color: var(--fg); }

/* ==================== Ad / Footer ==================== */
.ad-section { padding: 16px 0; }

.footer { padding: 20px 0; border-top: 1px solid var(--border); position: relative; z-index: 1; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.footer-copy { font-family: var(--font-body); font-size: 0.8rem; color: var(--muted); }
.footer-nav { display: flex; gap: 24px; }
.footer-nav a { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); text-decoration: none; transition: color 200ms; }
.footer-nav a:hover { color: var(--orange); }

/* ==================== Utilities ==================== */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
button, a { min-height: 44px; min-width: 44px; }
input { font-size: max(16px, 1rem); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .glow-blob { display: none; }
}