/* ---------- Tipografía y base ---------- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;500;700&display=swap');

:root{
  --bg: #fff9fb;
  --card: #ffffff;
  --text: #2a2a2a;
  --muted: #6b6b6b;
  --accent: #ff4d6d;
  --accent-2: #ff8fab;
  --ring: rgba(255,77,109,.35);
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --radius: 20px;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  color: var(--text);
  background: radial-gradient(1200px 600px at 25% -10%, #ffe3ec 0%, transparent 60%),
              radial-gradient(900px 500px at 110% 10%, #fce1ff 0%, transparent 55%),
              var(--bg);
  font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
}

/* ---------- Confeti (decoración) ---------- */
.confetti{
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 10% 20%, #ffd166 3px, transparent 4px),
    radial-gradient(circle at 30% 80%, #06d6a0 3px, transparent 4px),
    radial-gradient(circle at 70% 30%, #118ab2 3px, transparent 4px),
    radial-gradient(circle at 85% 60%, #ef476f 3px, transparent 4px),
    radial-gradient(circle at 50% 10%, #ffd166 3px, transparent 4px),
    radial-gradient(circle at 60% 90%, #06d6a0 3px, transparent 4px);
  animation: float 18s linear infinite;
  opacity: .35;
}
@keyframes float{
  from { background-position: 0 0, 0 0, 0 0, 0 0, 0 0, 0 0; }
  to   { background-position: 0 800px, 0 1200px, 0 1000px, 0 900px, 0 1100px, 0 950px; }
}

/* ---------- Hero ---------- */
.hero{
  text-align: center;
  padding: 80px 20px 40px;
}
.hero h1{
  margin: 0;
  font-weight: 700;
  font-size: clamp(2rem, 1.2rem + 3vw, 3.25rem);
  letter-spacing: .5px;
}
.accent{ color: var(--accent); }
.subtitle{
  margin-top: 10px;
  color: var(--muted);
  font-weight: 300;
}

/* ---------- Layout principal ---------- */
.container{
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 28px;
}
@media (max-width: 900px){
  .container{ grid-template-columns: 1fr; }
}

/* ---------- Tarjeta de foto ---------- */
.photo-card{
  position: relative;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.photo-card img{
  width: 100%;
  height: 100%;
  max-height: 520px;
  object-fit: cover;
  display: block;
}
.ribbon{
  position: absolute;
  top: 18px;
  left: -12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  padding: 8px 18px;
  font-weight: 600;
  border-radius: 0 10px 10px 0;
  box-shadow: 0 6px 18px var(--ring);
}

/* ---------- Tarjeta de mensaje ---------- */
.message-card{
  background: var(--card);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}
.message-card h2{
  margin-top: 0;
  font-size: 1.6rem;
}
.signature{
  margin: 18px 0 10px;
  border-left: 4px solid var(--accent);
  padding-left: 12px;
  color: var(--muted);
}
.signature .name{
  font-weight: 600;
  color: var(--text);
}
.signature .date{
  font-size: .95rem;
}

/* ---------- Botón ---------- */
.btn{
  display: inline-block;
  margin-top: 10px;
  text-decoration: none;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 8px 22px var(--ring);
  transition: transform .1s ease, box-shadow .2s ease, opacity .2s ease;
}
.btn:hover{ transform: translateY(-2px); box-shadow: 0 12px 28px var(--ring); }
.btn:active{ transform: translateY(0); opacity: .9; }

/* ---------- Formulario de dedicatoria ---------- */
.form-card{
  grid-column: 1 / -1;
  background: var(--card);
  border-radius: var(--radius);
  padding: 22px 20px;
  box-shadow: var(--shadow);
}
.form-card h3{ margin-top: 0; }
.form-card label{
  display: block;
  margin: 8px 0 6px;
  font-weight: 500;
}
.form-card input,
.form-card textarea{
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #e7e7e7;
  outline: none;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-card input:focus,
.form-card textarea:focus{
  border-color: var(--accent-2);
  box-shadow: 0 0 0 4px var(--ring);
}
.print-hint{
  margin-top: 12px;
  color: var(--muted);
}

/* ---------- Footer ---------- */
.footer{
  text-align: center;
  color: var(--muted);
  padding: 40px 12px 60px;
  font-size: .95rem;
}

/* ---------- Impresión ---------- */
@media print{
  .confetti{ display: none; }
  .btn{ display: none; }
  body{
    background: white;
  }
  .container{
    display: block;
    max-width: none;
    padding: 0;
  }
  .photo-card, .message-card, .form-card{
    box-shadow: none;
    border: 1px solid #eee;
    margin-bottom: 16px;
  }
}