:root {
    color-scheme: light;
}

* { box-sizing: border-box; }

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f5f5f5;
    color: #222;
    padding-bottom: env(safe-area-inset-bottom);
}

header {
    background: #16324f;
    color: white;
    padding: 14px 20px;
    padding-top: calc(14px + env(safe-area-inset-top));
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

header span { font-weight: bold; }

main {
    padding: 16px;
    max-width: 640px;
    margin: 0 auto;
}

.pantalla { display: block; }

.card {
    background: white;
    padding: 18px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,.1);
    margin-bottom: 16px;
}

h2 { margin-top: 0; }
h3 { margin-top: 20px; margin-bottom: 8px; }

label { display: block; margin-top: 12px; font-weight: bold; font-size: 0.95em; }

input, textarea, select {
    width: 100%;
    padding: 10px;
    margin-top: 4px;
    font-size: 1em;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    margin-top: 16px;
    padding: 12px 18px;
    background: #16324f;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    width: 100%;
}

button:disabled { opacity: 0.6; cursor: default; }

button.secundario {
    background: white;
    color: #16324f;
    border: 1px solid #16324f;
}

.link-btn {
    background: transparent;
    color: inherit;
    border: none;
    text-decoration: underline;
    width: auto;
    margin-top: 0;
    padding: 0;
    font-size: 0.95em;
}

.error { color: #b00020; font-size: 0.9em; }
.aviso { color: #555; font-size: 0.9em; background: #eef2f6; padding: 10px; border-radius: 6px; }

.deca-item {
    background: white;
    padding: 14px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,.1);
    margin-bottom: 10px;
    cursor: pointer;
}

.deca-item h4 { margin: 0 0 4px 0; }
.deca-item p { margin: 2px 0; font-size: 0.9em; color: #555; }

.envio-card { margin-bottom: 12px; }
.envio-card h4 { margin-top: 0; }

a.enlace-pdf {
    display: inline-block;
    margin-top: 8px;
    color: #16324f;
    font-weight: bold;
}