:root {
    --bg-main: linear-gradient(180deg, #a8b8ff 0%, #e0e8ff 10%, #f0f8ff 25%);
    --bg-card: #ffffff;
    --text-main: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --accent-color: #4f46e5;
    --accent-hover: #4338ca;
}

html {
    background-color: #f0f8ff;
    height: 100%;
}

*, *::before, *::after {
    -webkit-tap-highlight-color: transparent !important;
    outline: none !important;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    background: transparent;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-main) no-repeat;
    background-size: cover;
    z-index: -1;
}

.app-container {
    display: flex;
    flex-direction: column; /* Apilado vertical premium */
    max-width: 800px;
    margin: 40px auto;
    gap: 30px;
    padding: 0 20px 40px 20px;
}

.panel-config {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    opacity: 0;
    animation: entrarDesdeAbajo 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes entrarDesdeAbajo {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 { margin-top: 0; font-size: 24px; font-weight: 700; color: #1e293b; }
h3 { margin: 0 0 12px 0; font-size: 16px; color: var(--text-muted); border-bottom: 1px solid var(--border-color); padding-bottom: 6px; font-weight: 600; }
h4 { margin: 0 0 6px 0; font-size: 15px; color: #1e293b; font-weight: 700; }

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.input-group label {
    font-size: 14px;
    font-weight: 600;
}

input[type="text"] {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 15px;
    background-color: #f8fafc;
    color: var(--text-main);
    box-sizing: border-box;
}

.row {
    display: flex;
    gap: 12px;
}

#urls-container {
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.url-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #f1f5f9;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    word-break: break-all;
    font-size: 14px;
    font-weight: 500;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 24px;
    font-weight: 700;
    cursor: pointer;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-svg { background-color: var(--accent-color); color: white; }
.btn-svg:hover { background-color: var(--accent-hover); }

#btn-add {
    border-radius: 50%; /* Esfera perfecta */
    width: 42px;        /* Sincronizado milimétricamente con la altura */
    height: 42px;
    padding: 0;
}

.btn-delete {
    background: none;
    border: none;
    cursor: pointer;
    color: #ef4444;
    font-size: 16px;
    padding: 4px 8px;
    font-weight: bold;
}

.hidden { display: none !important; }

/* Estilos de la Guía de Implementación */
.guide-block {
    background-color: #fafafa;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 20px;
}

.guide-block p {
    margin: 0 0 12px 0;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.clipboard-box {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.clipboard-box input {
    flex: 1;
    font-family: monospace;
    font-size: 13px;
    background-color: #edf2f7;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 8px 12px;
    color: #4a5568;
}

/* Botones Copiar URL: Modificados con reducción de escala del 25% y formato cápsula circular */
.btn-inline-apply {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 24px; /* Formato cápsula redondeada premium */
    padding: 0 14px;     /* Reducido para proporcionalidad */
    font-size: 11px;     /* Reducido un ~25% para simetría */
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.btn-inline-apply:hover { background-color: var(--accent-hover); }

pre {
    background-color: #1e293b;
    color: #f8fafc;
    padding: 14px;
    border-radius: 8px;
    font-family: monospace;
    font-size: 12px;
    overflow-x: auto;
    margin: 0;
    white-space: pre-wrap;
    line-height: 1.5;
}

pre span { color: #38bdf8; font-weight: 600; }

/* Transición modular de hundimiento 3D corporativa */
button, .btn, .btn-inline-apply {
    transition: transform 0.1s ease, background-color 0.2s !important;
}
button:active, .btn:active, .btn-inline-apply:active {
    transform: scale(0.97) !important;
}

@media (max-width: 768px) {
    .app-container { margin: 20px auto; gap: 20px; }
    .panel-config { padding: 20px; }
    .clipboard-box { flex-direction: column; }
    .btn-inline-apply { padding: 8px; text-align: center; width: 100%; box-sizing: border-box; }
}

/* Botón de Actualización Principal: Forzado y achicado un 25% anulando los inline del HTML */
#btn-compile {
    width: 100% !important;
    max-width: 240px !important; /* Reducido un 25% frente al original de 320px */
    height: 38px !important;     /* Altura esbelta proporcional */
    padding: 0 18px !important;
    font-size: 13px !important;  /* Texto levemente estilizado */
    margin: 0 auto;
    display: flex;
}