:root {
    --primary-blue: #3b82f6;
    --accent-dark: #2563eb;
    --bg-white: #ffffff;
    --text-dark: #1a1b1e;
    --text-gray: #4b5563;
    --border-light: #e2e8f0;
    --shadow-medium: 0 4px 12px rgba(0,0,0,0.1);
    --success-green: #10b981;
    --warning-orange: #f59e0b;
    --danger-red: #ef4444;
    --transition-speed: 0.2s;
}

* { margin:0; padding:0; box-sizing:border-box; font-family:'Segoe UI',Arial,sans-serif; }

body {
    background: linear-gradient(135deg,#f5f7fa 0%,#e5e9f2 100%);
    min-height: 100vh;
    color: var(--text-dark);
    padding-bottom: 115px;
}

/* ── HEADER ────────────────────────────────────────────────── */
header {
    background: var(--bg-white);
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 56px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.logo-container { display:flex; align-items:center; gap:0.75rem; }
.logo-image { height:36px; width:auto; object-fit:contain; }
.logo { font-weight:700; font-size:1.05rem; color:var(--text-dark); }
.user-info { display:flex; align-items:center; gap:0.75rem; font-size:0.85rem; color:var(--text-gray); }
#userName { font-weight:500; color:var(--text-dark); }

.logout-button {
    background: transparent;
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s ease;
    font-size: 0.85rem;
}
.logout-button:hover { background:var(--primary-blue); color:white; }

.config-button {
    background: transparent;
    border: 1px solid #8b5cf6;
    color: #8b5cf6;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s ease;
    font-size: 0.85rem;
}
.config-button:hover { background: #8b5cf6; color: white; }

/* ── MAIN ──────────────────────────────────────────────────── */
.main-container { max-width: 1200px; margin: 1rem auto; padding: 0 1.25rem; }

/* ── FORM CARD ─────────────────────────────────────────────── */
.form-card { background:var(--bg-white); border-radius:16px; box-shadow:var(--shadow-medium); overflow:hidden; }
.form-card-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-dark));
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.form-card-header i { font-size: 1.1rem; }
.form-card-header h2 { font-size:1.1rem; font-weight:700; margin:0; }
.form-card-body { padding: 1.5rem 1.75rem; }

/* ── SECTION LABEL ─────────────────────────────────────────── */
.section-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.section-label i { font-size: 0.85rem; }
.form-divider { height:1px; background:var(--border-light); margin:1.25rem 0; }

/* ── FORM GROUP ────────────────────────────────────────────── */
.form-group { display:flex; flex-direction:column; gap:0.3rem; }
.form-group label { font-size:0.78rem; font-weight:600; color:var(--text-gray); }
.form-group input,
.form-group select {
    padding: 0.65rem 1rem;
    border: 1.5px solid var(--border-light);
    border-radius: 10px;
    background: #f8fafc;
    color: var(--text-dark);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    height: 44px;
}
.form-group input:focus,
.form-group select:focus {
    border-color:var(--primary-blue);
    background:white;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.form-group select {
    cursor:pointer;
    appearance:none;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat:no-repeat;
    background-position:right 1rem center;
    padding-right:2.25rem;
}

/* ── GRIDS ─────────────────────────────────────────────────── */
.compact-grid-3 { display:grid; grid-template-columns:1fr 1fr 1fr; gap:1rem; }
.compact-grid-4 { display:grid; grid-template-columns:1fr 1fr 1fr 1fr; gap:1rem; }

/* ── PRODUCTOS GRID ────────────────────────────────────────── */
.productos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.loading-msg { color:#94a3b8; font-size:0.9rem; padding:0.75rem; grid-column:1/-1; }

.producto-btn {
    border: 2px solid var(--border-light);
    border-radius: 12px;
    padding: 0.75rem 0.5rem;
    cursor: pointer;
    background: #f8fafc;
    text-align: center;
    transition: all 0.18s ease;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.4;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    min-height: 72px;
    justify-content: center;
}
.producto-btn .prod-icono { font-size:1.5rem; }
.producto-btn:hover {
    border-color:var(--primary-blue);
    transform:translateY(-2px);
    box-shadow: 0 4px 12px rgba(59,130,246,0.15);
    background: white;
}
.producto-btn.selected {
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(37,99,235,0.06));
    color: var(--accent-dark);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(59,130,246,0.25);
}

/* ── PLANTILLA BADGE ───────────────────────────────────────── */
.plantilla-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.8rem;
    background: rgba(16,185,129,0.08);
    border: 1px solid rgba(16,185,129,0.3);
    border-radius: 20px;
    font-size: 0.78rem;
    color: #059669;
    font-weight: 600;
}
.plantilla-badge i { color:#10b981; }

/* ── BOTTOM BAR ────────────────────────────────────────────── */
.bottom-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    padding: 1rem 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    position: sticky;
    bottom: 50px;
    z-index: 50;
}
.resumen-inline { display:flex; align-items:center; gap:1rem; flex:1; flex-wrap:wrap; }
.resumen-item { display:flex; flex-direction:column; gap:0.2rem; min-width:90px; }
.resumen-label { font-size:0.72rem; font-weight:700; text-transform:uppercase; color:var(--text-gray); letter-spacing:0.06em; }
.resumen-value { font-size:0.92rem; font-weight:600; color:var(--text-dark); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:160px; }
.resumen-value.empty { color:#94a3b8; font-weight:400; font-style:italic; }
.resumen-sep { width:1px; height:36px; background:var(--border-light); flex-shrink:0; }

/* ── GENERATE BUTTON ───────────────────────────────────────── */
.btn-generate {
    padding: 0.85rem 2rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-dark));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(59,130,246,0.4);
    white-space: nowrap;
    flex-shrink: 0;
}
.btn-generate:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(59,130,246,0.5); }
.btn-generate:disabled { background:#94a3b8; cursor:not-allowed; box-shadow:none; transform:none; }
.spinner { width:16px; height:16px; border:2.5px solid rgba(255,255,255,0.3); border-radius:50%; border-top-color:white; animation:spin 0.8s linear infinite; display:none; }
@keyframes spin { to { transform:rotate(360deg); } }
.btn-generate.loading .spinner { display:block; }
.btn-generate.loading .btn-text { display:none; }

/* ── HISTORIAL ─────────────────────────────────────────────── */
.historial-list { display:flex; flex-direction:column; gap:0.6rem; }
.historial-item {
    display:flex; align-items:center; justify-content:space-between;
    padding: 0.85rem 1.1rem;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid var(--border-light);
    font-size: 0.88rem;
}
.historial-item:hover { border-color:var(--primary-blue); background: white; }
.historial-info { display:flex; flex-direction:column; gap:0.2rem; }
.historial-title { font-weight:600; color:var(--text-dark); font-size:0.92rem; }
.historial-meta { color:var(--text-gray); font-size:0.8rem; }
.historial-actions { display:flex; gap:0.5rem; }
.btn-historial {
    padding: 0.4rem 0.75rem;
    border: none; border-radius:8px; cursor:pointer;
    font-size:0.8rem; font-weight:500;
    display:flex; align-items:center; gap:0.3rem;
    transition: all 0.15s ease;
}
.btn-historial.download { background:rgba(59,130,246,0.1); color:var(--primary-blue); }
.btn-historial.download:hover { background:var(--primary-blue); color:white; }
.btn-historial.delete { background:rgba(239,68,68,0.1); color:var(--danger-red); }
.btn-historial.delete:hover { background:var(--danger-red); color:white; }
.historial-empty { text-align:center; color:var(--text-gray); padding:2rem; font-size:0.9rem; }
.historial-empty i { font-size:2.5rem; color:#cbd5e1; display:block; margin-bottom:0.75rem; }

/* ── TOAST ─────────────────────────────────────────────────── */
.toast-container { position:fixed; bottom:75px; right:1rem; z-index:9999; display:flex; flex-direction:column; gap:0.4rem; }
.toast {
    display:flex; align-items:center; gap:0.6rem;
    padding: 0.65rem 1rem; border-radius:10px;
    font-size:0.85rem; font-weight:500; color:white;
    box-shadow:0 4px 15px rgba(0,0,0,0.15);
    animation:slideIn 0.25s ease forwards;
    max-width:320px;
}
.toast.success { background:linear-gradient(135deg,#10b981,#059669); }
.toast.error   { background:linear-gradient(135deg,#ef4444,#dc2626); }
.toast.warning { background:linear-gradient(135deg,#f59e0b,#d97706); }
.toast.info    { background:linear-gradient(135deg,var(--primary-blue),var(--accent-dark)); }
@keyframes slideIn { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }
.toast.fade-out { animation:slideOut 0.25s ease forwards; }
@keyframes slideOut { from{transform:translateX(0);opacity:1} to{transform:translateX(100%);opacity:0} }

/* ── NAV ───────────────────────────────────────────────────── */
.navigation-bar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 50px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 100;
    padding: 5px 0;
    border-top: 1px solid rgba(0,0,0,0.1);
}
.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-gray);
    font-size: 0.9em;
    gap: 0.1rem;
    transition: color 0.2s ease;
    cursor: pointer;
    background: none;
    border: none;
    flex: none;
}
.nav-item i { font-size: 1.5em; }
.nav-item.active, .nav-item:hover { color: var(--primary-blue); }

/* ═══════════════════════════════════════════════════════════════
   MODAL GESTIONAR LISTAS
═══════════════════════════════════════════════════════════════ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeInOverlay 0.2s ease;
}
@keyframes fadeInOverlay { from{opacity:0} to{opacity:1} }

.modal-box {
    background: var(--bg-white);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 860px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUpModal 0.25s ease;
}
@keyframes slideUpModal { from{transform:translateY(30px);opacity:0} to{transform:translateY(0);opacity:1} }

/* ── Modal header ── */
.modal-header {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.modal-header-left { display:flex; align-items:center; gap:0.75rem; }
.modal-header-left i { font-size: 1.1rem; }
.modal-header h2 { font-size:1rem; font-weight:700; margin:0; }
.modal-close-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    color: white;
    width: 32px; height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.2s;
    flex-shrink: 0;
}
.modal-close-btn:hover { background: rgba(255,255,255,0.3); }

/* ── Modal tabs ── */
.modal-tabs {
    display: flex;
    background: #f8fafc;
    border-bottom: 2px solid var(--border-light);
    flex-shrink: 0;
    padding: 0 1rem;
    gap: 0.25rem;
}
.modal-tab {
    padding: 0.75rem 1.25rem;
    border: none;
    background: transparent;
    color: var(--text-gray);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.18s ease;
    border-radius: 8px 8px 0 0;
}
.modal-tab:hover { color: #7c3aed; background: rgba(124,58,237,0.05); }
.modal-tab.active {
    color: #7c3aed;
    border-bottom-color: #7c3aed;
    background: rgba(124,58,237,0.06);
}
.tab-count {
    background: #e0e7ff;
    color: #6d28d9;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.1rem 0.45rem;
    border-radius: 20px;
    min-width: 20px;
    text-align: center;
}
.modal-tab.active .tab-count { background: #7c3aed; color: white; }

/* ── Modal body / panels ── */
.modal-body { flex: 1; overflow-y: auto; padding: 0; }
.tab-panel { display: none; padding: 1.25rem 1.5rem; }
.tab-panel.active { display: block; }

/* ── Panel toolbar ── */
.panel-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.panel-desc { font-size: 0.82rem; color: var(--text-gray); }
.btn-add-row {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s;
    box-shadow: 0 3px 10px rgba(124,58,237,0.3);
}
.btn-add-row:hover { transform: translateY(-1px); box-shadow: 0 5px 15px rgba(124,58,237,0.4); }

/* ── Inline form ── */
.inline-form {
    background: #f0f4ff;
    border: 2px solid #c4b5fd;
    border-radius: 14px;
    padding: 1.1rem 1.25rem 0.9rem;
    margin-bottom: 1rem;
    animation: slideDown 0.2s ease;
}
@keyframes slideDown { from{transform:translateY(-8px);opacity:0} to{transform:translateY(0);opacity:1} }

.inline-form-grid   { display:grid; gap:0.75rem; grid-template-columns:1fr 1fr; }
.inline-form-grid-3 { grid-template-columns:1fr 1fr 1fr; }
.inline-form-grid-4 { grid-template-columns:1fr 1fr 1fr 1fr; }

.inline-form-actions { display:flex; gap:0.5rem; margin-top:0.9rem; }

.btn-inline-save {
    padding: 0.5rem 1.1rem;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex; align-items: center; gap: 0.35rem;
    transition: all 0.2s;
}
.btn-inline-save:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(16,185,129,0.35); }

.btn-inline-cancel {
    padding: 0.5rem 1rem;
    background: #f1f5f9;
    color: var(--text-gray);
    border: 1.5px solid var(--border-light);
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex; align-items: center; gap: 0.35rem;
    transition: background 0.2s;
}
.btn-inline-cancel:hover { background: #e2e8f0; }

.required { color: #ef4444; }

/* ── Config table ── */
.config-table-wrap { overflow-x: auto; }
.config-table { width:100%; border-collapse:collapse; font-size:0.85rem; }
.config-table thead tr { background: #f1f5f9; }
.config-table th {
    padding: 0.65rem 0.9rem;
    text-align: left;
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-gray);
    white-space: nowrap;
}
.config-table tbody tr {
    border-bottom: 1px solid var(--border-light);
    transition: background 0.15s;
}
.config-table tbody tr:hover { background: #f8fafc; }
.config-table td { padding:0.65rem 0.9rem; color:var(--text-dark); vertical-align:middle; }
.config-table td.td-icon { font-size:1.3rem; text-align:center; width:48px; }
.config-table td.td-id { font-size:0.75rem; color:#94a3b8; font-family:monospace; }
.config-table td.td-trunc { max-width:240px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.config-table td.td-actions { text-align:right; white-space:nowrap; }

.btn-tbl {
    padding: 0.32rem 0.65rem;
    border: none;
    border-radius: 7px;
    cursor: pointer;
    font-size: 0.77rem;
    font-weight: 600;
    display: inline-flex; align-items: center; gap: 0.25rem;
    transition: all 0.15s;
    margin-left: 0.3rem;
}
.btn-tbl-edit { background:rgba(59,130,246,0.1); color:var(--primary-blue); }
.btn-tbl-edit:hover { background:var(--primary-blue); color:white; }
.btn-tbl-del  { background:rgba(239,68,68,0.1);  color:var(--danger-red); }
.btn-tbl-del:hover  { background:var(--danger-red); color:white; }

.config-empty { text-align:center; color:var(--text-gray); padding:2.5rem; font-size:0.88rem; }
.config-empty i { font-size:2rem; color:#cbd5e1; display:block; margin-bottom:0.5rem; }

/* ── Modal footer ── */
.modal-footer {
    background: #f8fafc;
    border-top: 1px solid var(--border-light);
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 1rem;
    flex-wrap: wrap;
}
.modal-footer-hint { font-size:0.78rem; color:var(--text-gray); display:flex; align-items:center; gap:0.4rem; }
.btn-modal-close {
    padding: 0.55rem 1.5rem;
    background: #1e293b;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-modal-close:hover { background: #0f172a; }

/* ── Confirm dialog ── */
.modal-confirm-overlay { z-index: 3000; }
.modal-confirm-box {
    background: white;
    border-radius: 16px;
    padding: 2rem 2.5rem;
    text-align: center;
    max-width: 360px;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    animation: slideUpModal 0.2s ease;
}
.confirm-icon { font-size:2.5rem; color:var(--danger-red); margin-bottom:0.75rem; }
.modal-confirm-box p { font-size:0.95rem; color:var(--text-dark); margin-bottom:1.5rem; font-weight:500; }
.confirm-actions { display:flex; gap:0.75rem; justify-content:center; }
.btn-confirm-yes {
    padding: 0.6rem 1.5rem;
    background: var(--danger-red);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-confirm-yes:hover { background: #dc2626; }
.btn-confirm-no {
    padding: 0.6rem 1.5rem;
    background: #f1f5f9;
    color: var(--text-gray);
    border: 1.5px solid var(--border-light);
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-confirm-no:hover { background: #e2e8f0; }

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .compact-grid-4 { grid-template-columns:1fr 1fr; }
}
@media (max-width: 768px) {
    .productos-grid { grid-template-columns:repeat(3,1fr); }
    .compact-grid-3 { grid-template-columns:1fr 1fr; }
    .compact-grid-4 { grid-template-columns:1fr 1fr; }
    .bottom-bar { flex-direction:column; align-items:stretch; }
    .btn-generate { width:100%; justify-content:center; }
    .resumen-inline { gap:0.75rem; }
    /* Modal */
    .modal-box { max-width:100%; border-radius:16px 16px 0 0; max-height:95vh; align-self:flex-end; }
    .inline-form-grid-3,
    .inline-form-grid-4 { grid-template-columns:1fr 1fr; }
    .modal-tabs { overflow-x:auto; }
}
@media (max-width: 480px) {
    .productos-grid { grid-template-columns:repeat(3,1fr); }
    .compact-grid-3,
    .compact-grid-4 { grid-template-columns:1fr; }
    .form-card-body { padding:1rem; }
    /* Modal */
    .inline-form-grid,
    .inline-form-grid-3,
    .inline-form-grid-4 { grid-template-columns:1fr; }
}