:root[data-theme="dark"] {
    --bg-body: #0b0f17;
    --card-bg: #151b26;
    --card-border: rgba(255, 255, 255, 0.08);
    --input-bg: #0f141e;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: rgba(99, 102, 241, 0.15);
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --danger: #f43f5e;
    --danger-bg: rgba(244, 63, 94, 0.15);
    --warning: #f59e0b;
    --whatsapp: #25d366;
    --whatsapp-hover: #1da851;
    --table-hover: rgba(255, 255, 255, 0.025);
    --shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.5);
}

:root[data-theme="light"] {
    --bg-body: #f1f5f9;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --input-bg: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: rgba(79, 70, 229, 0.1);
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.12);
    --danger: #e11d48;
    --danger-bg: rgba(225, 29, 72, 0.12);
    --warning: #d97706;
    --whatsapp: #16a34a;
    --whatsapp-hover: #15803d;
    --table-hover: #f8fafc;
    --shadow: 0 12px 30px -5px rgba(15, 23, 42, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-variant-numeric: tabular-nums;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 16px 12px 80px;
    touch-action: manipulation;
}

.app-container {
    width: 100%;
    max-width: 820px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 20px 20px;
    position: relative;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--card-border);
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--accent);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.brand-titles h1 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.brand-titles p {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.metrics-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 14px;
    background: var(--input-bg);
    padding: 8px 12px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
}

.metric-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.metric-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--text-muted);
    font-weight: 600;
}

.metric-val {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    width: fit-content;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-connected { color: var(--success); background: var(--success-bg); }
.status-connected .status-dot { background: var(--success); }

.status-updating { color: var(--warning); background: rgba(245, 158, 11, 0.15); }
.status-updating .status-dot { background: var(--warning); animation: pulse 1s infinite alternate; }

.status-offline { color: var(--danger); background: var(--danger-bg); }
.status-offline .status-dot { background: var(--danger); }

@keyframes pulse { 0% { opacity: 0.3; } 100% { opacity: 1; } }

.calculator-card {
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 14px;
}

.calc-header-type {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.calc-type-btn {
    flex: 1;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calc-type-btn.active {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 10px;
    margin-bottom: 12px;
}

.calc-field label {
    display: block;
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.calc-select, .calc-input {
    width: 100%;
    height: 38px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0 10px;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
    font-weight: 600;
}

.calc-result-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    gap: 10px;
    flex-wrap: wrap;
}

.calc-res-info {
    display: flex;
    flex-direction: column;
}

.calc-res-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.calc-res-val {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--success);
    font-family: monospace;
}

.btn-whatsapp {
    background: var(--whatsapp);
    color: #ffffff;
    border: none;
    height: 38px;
    padding: 0 14px;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.btn-whatsapp:hover {
    background: var(--whatsapp-hover);
}

.controls-row {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
}

.search-input-wrapper input {
    width: 100%;
    height: 40px;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 0 12px 0 34px;
    font-size: 0.85rem;
    color: var(--text-primary);
    outline: none;
}

.search-input-wrapper input:focus {
    border-color: var(--accent);
}

.search-input-wrapper svg {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    fill: var(--text-muted);
}

.btn {
    height: 40px;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0 14px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    user-select: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--card-border);
}

.btn-secondary:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-icon-only {
    width: 40px;
    padding: 0;
}

.btn-subtle {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.72rem;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
}

.btn-subtle:hover {
    color: var(--text-secondary);
    background: var(--input-bg);
}

.spinning { animation: spin 0.8s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.table-wrapper {
    border: 1px solid var(--card-border);
    border-radius: 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.82rem;
}

.table th {
    background: var(--input-bg);
    padding: 10px 12px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--card-border);
    white-space: nowrap;
}

.table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--card-border);
    white-space: nowrap;
}

.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background-color: var(--table-hover); }

.currency-cell {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.currency-tag {
    font-size: 0.65rem;
    padding: 2px 5px;
    border-radius: 4px;
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 700;
}

.val-num {
    font-family: monospace;
    font-size: 0.88rem;
    font-weight: 700;
}

.row-up td {
    animation: flashNeonGreen 1.8s ease-out forwards;
}

.row-down td {
    animation: flashNeonRed 1.8s ease-out forwards;
}

@keyframes flashNeonGreen {
    0% {
        background-color: rgba(16, 185, 129, 0.4) !important;
        color: #34d399 !important;
        box-shadow: inset 0 0 12px rgba(16, 185, 129, 0.5);
    }
    100% {
        background-color: var(--success-bg) !important;
        color: var(--success) !important;
    }
}

@keyframes flashNeonRed {
    0% {
        background-color: rgba(244, 63, 94, 0.4) !important;
        color: #fb7185 !important;
        box-shadow: inset 0 0 12px rgba(244, 63, 94, 0.5);
    }
    100% {
        background-color: var(--danger-bg) !important;
        color: var(--danger) !important;
    }
}

.arrow { font-size: 0.7rem; margin-left: 2px; font-weight: 800; }

.footer-note {
    width: 100%;
    max-width: 820px;
    margin-top: 10px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 10px 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.73rem;
    color: var(--text-secondary);
    box-shadow: var(--shadow);
    text-align: center;
}

.footer-note-badge {
    background: var(--accent-light);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.bottom-admin-container {
    margin-top: 10px;
    text-align: center;
}

.site-footer {
    width: 100%;
    max-width: 820px;
    margin-top: 18px;
    margin-bottom: 10px;
    padding: 0 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.terms-text {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.45;
    max-width: 650px;
    word-break: break-word;
}

.credits-text {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.3px;
}

.credits-text strong {
    color: var(--accent);
    font-weight: 700;
}

.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background-color: #25d366;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    z-index: 999;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.whatsapp-float img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    display: block;
}

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.whatsapp-float:active {
    transform: scale(0.94);
}

.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    display: flex; justify-content: center; align-items: center;
    z-index: 1000; opacity: 0; pointer-events: none;
    transition: opacity 0.2s ease;
    padding: 12px;
}

.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    width: 100%; max-width: 460px;
    padding: 18px;
    box-shadow: var(--shadow);
    max-height: 90vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--card-border);
}

.modal-header h2 { font-size: 0.95rem; font-weight: 700; }
.close-btn { background: transparent; border: none; color: var(--text-muted); font-size: 1.4rem; cursor: pointer; padding: 4px; }

.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 0.75rem; color: var(--text-secondary); margin-bottom: 4px; }
.form-control {
    width: 100%; height: 38px; background: var(--input-bg); border: 1px solid var(--card-border);
    border-radius: 6px; padding: 0 10px; color: var(--text-primary); font-size: 0.85rem; outline: none;
}

.admin-row {
    display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 6px; align-items: center;
    background: var(--input-bg); padding: 8px; border-radius: 6px; margin-bottom: 6px;
}

.switch-box {
    display: flex; align-items: center; justify-content: space-between;
    background: var(--input-bg); padding: 10px; border-radius: 8px; margin-bottom: 12px;
}
.switch { position: relative; width: 36px; height: 20px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--text-muted); transition: .3s; border-radius: 20px;
}
.slider:before {
    position: absolute; content: ""; height: 14px; width: 14px; left: 3px; bottom: 3px;
    background-color: white; transition: .3s; border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent); }
input:checked + .slider:before { transform: translateX(16px); }

.toast-container { 
    position: fixed; 
    bottom: 75px; 
    right: 16px; 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
    z-index: 2000; 
}

.toast {
    background: var(--card-bg); color: var(--text-primary); border: 1px solid var(--card-border);
    border-left: 3px solid var(--accent); padding: 10px 14px; border-radius: 6px; font-size: 0.78rem;
    box-shadow: var(--shadow); animation: fadeInRight 0.25s ease, fadeOut 0.4s ease 2.6s forwards;
}
.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }
@keyframes fadeInRight { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

/* AJUSTES RESPONSIVOS PARA MÓVILES */
@media (max-width: 580px) {
    body { padding: 10px 8px 90px; }
    .app-container { padding: 14px 12px; border-radius: 12px; }
    .metrics-bar { grid-template-columns: repeat(2, 1fr); gap: 10px 6px; }
    .brand-titles h1 { font-size: 0.88rem; }
    .brand-titles p { font-size: 0.68rem; }
    .calc-grid { grid-template-columns: 1fr; }
    .calc-result-box { flex-direction: column; align-items: stretch; }
    .btn-whatsapp { justify-content: center; }
    .controls-row { flex-wrap: wrap; }
    .search-input-wrapper { min-width: 100%; }
    .btn { flex: 1; }
    .btn-icon-only { flex: 0 0 40px; }
    .footer-note { flex-direction: column; gap: 4px; padding: 8px 10px; }
    .admin-row { grid-template-columns: 1fr; gap: 4px; }
    .site-footer { margin-top: 20px; padding: 0 8px; gap: 6px; }
    .terms-text { font-size: 0.7rem; line-height: 1.4; }
    .credits-text { font-size: 0.75rem; }
    .whatsapp-float { bottom: 16px; right: 16px; width: 42px; height: 42px; }
    .whatsapp-float img { width: 22px; height: 22px; }
    .toast-container { bottom: 70px; right: 12px; left: 12px; }
}