/* Paleta y variables */
:root {
    --color-bg: linear-gradient(120deg, #e0e7ff 0%, #f9fafb 100%);
    --color-bg-dark: linear-gradient(120deg, #181c2a 0%, #232946 100%);
    --color-card: rgba(255,255,255,0.85);
    --color-card-dark: rgba(30,41,59,0.85);
    --color-acento: #4f8cff;
    --color-acento2: #ff6b6b;
    --color-acento3: #34d399;
    --color-acento4: #fbbf24;
    --color-text: #222;
    --color-text-dark: #f9fafb;
    --color-chip: #f1f5f9;
    --color-chip-dark: #232946;
    --color-shadow: 0 8px 32px #4f8cff22;
    --color-shadow-dark: 0 8px 32px #0008;
    --blur: 16px;
}
body {
    min-height: 100vh;
    background: var(--color-bg);
    font-family: 'Inter', 'Nunito', 'Segoe UI', Arial, sans-serif;
    color: var(--color-text);
    margin: 0;
    padding: 0;
    transition: background 0.4s, color 0.4s;
    line-height: 1.7;
}
body.modo-oscuro {
    background: var(--color-bg-dark);
    color: var(--color-text-dark);
}
.header-glass {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-card);
    backdrop-filter: blur(var(--blur));
    box-shadow: var(--color-shadow);
    border-radius: 0 0 18px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2em 2em 1.2em 1.2em;
    margin-bottom: 2em;
}
body.modo-oscuro .header-glass {
    background: var(--color-card-dark);
    box-shadow: var(--color-shadow-dark);
}
.logo-title {
    font-size: 1.5em;
    font-weight: 800;
    letter-spacing: 0.01em;
    color: var(--color-acento);
    display: flex;
    align-items: center;
    gap: 0.5em;
}
.menu-h {
    display: flex;
    gap: 1.2em;
}
.menu-h a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.08em;
    transition: color 0.2s;
    border-radius: 6px;
    padding: 0.3em 0.8em;
}
.menu-h a:hover, .menu-h a.active {
    color: var(--color-acento2);
    background: var(--color-chip);
}
body.modo-oscuro .menu-h a {
    color: var(--color-text-dark);
}
body.modo-oscuro .menu-h a:hover, body.modo-oscuro .menu-h a.active {
    background: var(--color-chip-dark);
}
#toggle-modo-oscuro {
    background: var(--color-chip);
    color: var(--color-acento2);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    cursor: pointer;
    box-shadow: 0 2px 8px #0002;
    transition: background 0.2s, color 0.2s;
}
body.modo-oscuro #toggle-modo-oscuro {
    background: var(--color-chip-dark);
    color: var(--color-acento4);
}
.container-glass {
    max-width: 600px;
    margin: 0 auto 3em auto;
    background: var(--color-card);
    border-radius: 28px;
    box-shadow: var(--color-shadow);
    padding: 2.8em 2.2em 2.2em 2.2em;
    backdrop-filter: blur(var(--blur));
    position: relative;
    animation: fadeInUp 0.7s;
}
body.modo-oscuro .container-glass {
    background: var(--color-card-dark);
    box-shadow: var(--color-shadow-dark);
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: none; }
}
.card-section {
    margin-bottom: 2.5em;
    padding-bottom: 1.2em;
    border-bottom: 1px solid #e5e7eb44;
}
.card-section:last-child {
    border-bottom: none;
}
.chip {
    display: inline-flex;
    align-items: center;
    background: var(--color-chip);
    color: var(--color-acento2);
    border-radius: 999px;
    padding: 0.5em 1.3em 0.5em 1.1em;
    font-size: 1.08em;
    font-weight: 600;
    margin: 0.4em 0.5em 0.4em 0;
    box-shadow: 0 1px 4px #0001;
    cursor: pointer;
    transition: background 0.18s, color 0.18s, box-shadow 0.18s;
    border: none;
}
.chip:hover {
    background: var(--color-acento);
    color: #fff;
    box-shadow: 0 2px 12px #4f8cff33;
}
body.modo-oscuro .chip {
    background: var(--color-chip-dark);
    color: var(--color-acento4);
}
body.modo-oscuro .chip:hover {
    background: var(--color-acento3);
    color: #fff;
}
.btn-glass {
    background: var(--color-acento);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 0.9em 2em;
    font-size: 1.13em;
    font-weight: 700;
    box-shadow: 0 2px 8px #4f8cff22;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 1.2em;
}
.btn-glass:hover, .btn-glass:focus {
    background: var(--color-acento2);
    color: #fff;
    transform: scale(1.04);
}
.input-glass, .select-glass {
    width: 100%;
    padding: 1em 1em;
    border: 1.5px solid #cbd5e1;
    border-radius: 8px;
    font-size: 1.13em;
    background: rgba(255,255,255,0.7);
    margin-bottom: 1.6em;
    color: var(--color-text);
    transition: border 0.2s, background 0.2s;
}
.input-glass:focus, .select-glass:focus {
    border: 1.5px solid var(--color-acento);
    outline: none;
    background: #fff;
}
body.modo-oscuro .input-glass, body.modo-oscuro .select-glass {
    background: rgba(30,41,59,0.7);
    color: var(--color-text-dark);
    border: 1.5px solid #334155;
}
body.modo-oscuro .input-glass:focus, body.modo-oscuro .select-glass:focus {
    background: #232946;
    border: 1.5px solid var(--color-acento3);
}
.result-glass {
    margin-top: 2.2em;
    font-size: 1.3em;
    text-align: center;
    min-height: 2em;
    color: var(--color-acento2);
    background: rgba(255,255,255,0.7);
    border-radius: 12px;
    box-shadow: 0 1px 8px #0001;
    padding: 1.1em 0.7em;
    animation: fadeInResult 0.5s;
}
body.modo-oscuro .result-glass {
    background: rgba(30,41,59,0.7);
    color: var(--color-acento4);
}
@keyframes fadeInResult {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: none; }
}
.alert-glass {
    background: var(--color-acento4);
    color: #222;
    border-radius: 8px;
    padding: 1em 1.2em;
    margin: 1.3em 0 1em 0;
    font-size: 1.08em;
    text-align: center;
    box-shadow: 0 1px 8px #0001;
}
body.modo-oscuro .alert-glass {
    background: #232946;
    color: var(--color-acento4);
}
footer {
    text-align: center;
    margin-top: 3em;
    color: #64748b;
    font-size: 1.08em;
    background: transparent;
}
::-webkit-scrollbar {
    width: 10px;
    background: #e0e7ff;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 8px;
}
body.modo-oscuro ::-webkit-scrollbar {
    background: #232946;
}
body.modo-oscuro ::-webkit-scrollbar-thumb {
    background: #334155;
}
@media (max-width: 700px) {
    .container-glass {
        max-width: 98vw;
        padding: 1.2em 0.5em 1em 0.5em;
    }
    .card-section {
        padding-bottom: 0.7em;
    }
    .chip {
        font-size: 1em;
        padding: 0.45em 1em 0.45em 0.9em;
    }
    .btn-glass {
        font-size: 1em;
        padding: 0.7em 1.2em;
    }
}