:root {
    --color-naranja: #fe9e03;
    --color-azul: #0faceb;
    --color-azul-oscuro: #007bb5;
    --white: #ffffff;
    --text-dark: #333333;
    --text-muted: #666666;
    --border-color: #ddd;
    --error: #ec1c24;
    --success: #27ae60;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #c3d6dd 0%, #49636f 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 20px;
}

.watermark {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('logo.jpg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.main-container {
    z-index: 1;
    width: 100%;
    display: flex;
    justify-content: center;
}

.card-etica {
    background-color: var(--white);
    width: 100%;
    max-width: 600px; /* Un poco más ancha para el textarea */
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.25);
    padding: 30px;
}

.card-header h2 {
    color: var(--color-azul-oscuro);
    text-align: center;
    margin-bottom: 5px;
    font-size: 1.8rem;
}

.card-header p {
    color: var(--text-muted);
    text-align: center;
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.divider {
    height: 4px;
    width: 60px;
    background: linear-gradient(to right, var(--color-naranja), #ffd600);
    margin: 0 auto 25px auto;
    border-radius: 2px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-weight: bold; color: var(--text-dark); margin-bottom: 8px; font-size: 0.95rem;
}
.form-group .req { color: var(--error); }
.form-group .opcional { color: #999; font-size: 0.8rem; font-weight: normal; }

input[type="text"], textarea {
    width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 6px;
    font-family: 'Roboto', sans-serif; font-size: 1rem; outline: none; transition: border-color 0.3s;
}
input[type="text"]:focus, textarea:focus { border-color: var(--color-azul); box-shadow: 0 0 5px rgba(15, 172, 235, 0.2); }
textarea { resize: vertical; min-height: 100px; }

/* Estilizar el input File */
.file-upload-wrapper {
    position: relative; display: flex; align-items: center; gap: 15px;
}
.file-input {
    position: absolute; left: 0; top: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer;
}
.file-custom-btn {
    background-color: #eee; color: #555; padding: 10px 20px; border-radius: 6px; border: 1px solid #ccc; font-weight: bold; pointer-events: none;
}
.file-upload-wrapper:hover .file-custom-btn { background-color: #e0e0e0; }
.file-name-text { font-size: 0.9rem; color: #666; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 250px; }

.form-group small { display: block; margin-top: 5px; color: #888; font-size: 0.8rem; }

.btn {
    width: 100%; padding: 14px; border: none; border-radius: 6px; font-size: 1.1rem;
    font-weight: bold; cursor: pointer; transition: background 0.2s; color: white;
}
.btn-primary { background-color: var(--color-naranja); }
.btn-primary:hover:not(:disabled) { background-color: #e58e02; }
.btn:disabled { background-color: #ccc; cursor: not-allowed; }

.msg-box { padding: 15px; border-radius: 6px; margin-bottom: 20px; text-align: center; font-weight: bold; }
.msg-success { background-color: #d4efdf; color: #1e8449; border: 1px solid #a9dfbf; }
.msg-error { background-color: #fadbd8; color: #c0392b; border: 1px solid #e6b0aa; }