/* ============================================================
   Home Stock Manager v2 — Frontend App CSS
   ============================================================ */

:root {
    --hsm-green:        #22c55e;
    --hsm-green-bg:     #f0fdf4;
    --hsm-green-border: #bbf7d0;
    --hsm-orange:       #f97316;
    --hsm-orange-bg:    #fff7ed;
    --hsm-orange-border:#fed7aa;
    --hsm-red:          #ef4444;
    --hsm-red-bg:       #fef2f2;
    --hsm-red-border:   #fecaca;
    --hsm-blue:         #3b82f6;
    --hsm-blue-dark:    #2563eb;
    --hsm-gray-50:      #f9fafb;
    --hsm-gray-100:     #f3f4f6;
    --hsm-gray-200:     #e5e7eb;
    --hsm-gray-400:     #9ca3af;
    --hsm-gray-600:     #4b5563;
    --hsm-gray-800:     #1f2937;
    --hsm-text:         #111827;
    --hsm-radius:       8px;
    --hsm-radius-sm:    5px;
    --hsm-shadow:       0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --hsm-shadow-md:    0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
    --hsm-font:         -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --hsm-transition:   .15s ease;
}

/* ── App wrapper ─────────────────────────────────────────────── */
.hsm-app {
    font-family: var(--hsm-font);
    font-size: 14px;
    color: var(--hsm-text);
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.hsm-app *, .hsm-app *::before, .hsm-app *::after {
    box-sizing: border-box;
}

/* ── Tab nav ─────────────────────────────────────────────────── */
.hsm-tabs {
    display: flex;
    gap: 2px;
    background: var(--hsm-gray-100);
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius);
    padding: 4px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.hsm-tab {
    flex: 1;
    min-width: 120px;
    padding: 9px 16px;
    background: transparent;
    border: none;
    border-radius: var(--hsm-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--hsm-gray-600);
    transition: all var(--hsm-transition);
    white-space: nowrap;
}

.hsm-tab:hover   { background: #fff; color: var(--hsm-text); }
.hsm-tab.active  {
    background: #fff;
    color: var(--hsm-blue);
    box-shadow: var(--hsm-shadow);
    font-weight: 600;
}

/* ── Panels ──────────────────────────────────────────────────── */
.hsm-panel { display: none; }
.hsm-panel.active { display: block; }

/* ── Stats bar ───────────────────────────────────────────────── */
.hsm-stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.hsm-stat {
    background: #fff;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius);
    padding: 14px 16px;
    text-align: center;
    box-shadow: var(--hsm-shadow);
}

.hsm-stat b {
    display: block;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.1;
    color: var(--hsm-text);
}

.hsm-stat span {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--hsm-gray-400);
    margin-top: 3px;
    display: block;
}

.hsm-stat-warning { border-top: 3px solid var(--hsm-orange); }
.hsm-stat-warning b { color: var(--hsm-orange); }
.hsm-stat-danger  { border-top: 3px solid var(--hsm-red); }
.hsm-stat-danger  b { color: var(--hsm-red); }
.hsm-stat-low     { border-top: 3px solid var(--hsm-blue); }
.hsm-stat-low     b { color: var(--hsm-blue); }

/* ── Alert banner ────────────────────────────────────────────── */
.hsm-alert-banner {
    background: var(--hsm-orange-bg);
    border: 1px solid var(--hsm-orange-border);
    border-left: 4px solid var(--hsm-orange);
    color: #9a3412;
    padding: 10px 16px;
    border-radius: var(--hsm-radius);
    margin-bottom: 14px;
    font-size: 13px;
    font-weight: 500;
}

/* ── Toolbar ─────────────────────────────────────────────────── */
.hsm-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.hsm-toolbar-left, .hsm-toolbar-right {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.hsm-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 14px;
    border-radius: var(--hsm-radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--hsm-transition);
    background: var(--hsm-gray-100);
    color: var(--hsm-gray-800);
    text-decoration: none;
    white-space: nowrap;
}

.hsm-btn:hover { background: var(--hsm-gray-200); }

.hsm-btn-primary {
    background: var(--hsm-blue);
    color: #fff;
    border-color: var(--hsm-blue);
}
.hsm-btn-primary:hover { background: var(--hsm-blue-dark); border-color: var(--hsm-blue-dark); }

.hsm-btn-danger {
    background: transparent;
    color: var(--hsm-red);
    border-color: var(--hsm-red-border);
    padding: 4px 9px;
}
.hsm-btn-danger:hover { background: var(--hsm-red-bg); }

.hsm-btn-ghost {
    background: transparent;
    border-color: var(--hsm-gray-200);
    color: var(--hsm-gray-600);
}
.hsm-btn-ghost:hover { background: var(--hsm-gray-100); }

.hsm-btn-outline {
    background: transparent;
    border-color: var(--hsm-gray-200);
    color: var(--hsm-gray-600);
}
.hsm-btn-outline:hover { background: var(--hsm-gray-50); border-color: var(--hsm-gray-400); }

.hsm-btn-sm { padding: 5px 10px; font-size: 12px; }
.hsm-btn-edit { color: var(--hsm-blue); border-color: #bfdbfe; background: #eff6ff; }
.hsm-btn-edit:hover { background: #dbeafe; }

/* ── Selects ─────────────────────────────────────────────────── */
.hsm-select, .hsm-input {
    padding: 7px 10px;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius-sm);
    font-size: 13px;
    background: #fff;
    color: var(--hsm-text);
    transition: border-color var(--hsm-transition);
    font-family: inherit;
}
.hsm-select:focus, .hsm-input:focus {
    outline: none;
    border-color: var(--hsm-blue);
    box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

/* ── Table ───────────────────────────────────────────────────── */
.hsm-table-wrap { overflow-x: auto; border-radius: var(--hsm-radius); box-shadow: var(--hsm-shadow-md); }

.hsm-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: 13px;
}

.hsm-table thead th {
    background: var(--hsm-gray-800);
    color: #fff;
    padding: 11px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .04em;
    white-space: nowrap;
}

.hsm-table tbody tr {
    border-bottom: 1px solid var(--hsm-gray-100);
    transition: background var(--hsm-transition);
}

.hsm-table tbody tr:last-child { border-bottom: none; }
.hsm-table tbody tr:hover { background: var(--hsm-gray-50); }

.hsm-table td { padding: 10px 14px; vertical-align: middle; }

/* Row states */
.hsm-row-vencido    { background: #fff5f5 !important; }
.hsm-row-por-vencer { background: #fffbeb !important; }

.hsm-table-footer {
    text-align: right;
    font-size: 12px;
    color: var(--hsm-gray-400);
    margin-top: 6px;
}

/* ── Badge ───────────────────────────────────────────────────── */
.hsm-badge {
    display: inline-block;
    background: var(--hsm-gray-100);
    color: var(--hsm-gray-600);
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 12px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: .03em;
}

/* ── Status label ────────────────────────────────────────────── */
.hsm-status {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
}

.hsm-status-normal      { background: var(--hsm-green-bg);   color: #166534; border: 1px solid var(--hsm-green-border); }
.hsm-status-por-vencer  { background: var(--hsm-orange-bg);  color: #9a3412; border: 1px solid var(--hsm-orange-border); }
.hsm-status-vencido     { background: var(--hsm-red-bg);     color: #991b1b; border: 1px solid var(--hsm-red-border); }
.hsm-status-sin-fecha   { background: var(--hsm-gray-100);   color: var(--hsm-gray-400); border: 1px solid var(--hsm-gray-200); }

/* ── Quantity ────────────────────────────────────────────────── */
.hsm-qty-cell { font-weight: 600; }
.hsm-qty-low  { color: var(--hsm-orange); }
.hsm-low-mark { font-size: 12px; }

.hsm-product-name { font-weight: 500; }
.hsm-notes-cell   { max-width: 200px; }
.hsm-notes        { color: var(--hsm-gray-600); font-size: 12px; cursor: help; }
.hsm-actions-cell { white-space: nowrap; }

/* ── Loading / empty ─────────────────────────────────────────── */
.hsm-loading   { text-align: center; padding: 30px; color: var(--hsm-gray-400); }
.hsm-empty-row { text-align: center; padding: 30px; color: var(--hsm-gray-400); font-style: italic; }
.hsm-error     { text-align: center; padding: 20px; color: var(--hsm-red); }

/* ── Toast ───────────────────────────────────────────────────── */
.hsm-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 99999;
    background: var(--hsm-gray-800);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--hsm-radius);
    font-size: 13px;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,.18);
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    transition: opacity .25s, transform .25s;
    max-width: 340px;
}
.hsm-toast.visible       { opacity: 1; transform: translateY(0); }
.hsm-toast-success       { background: #166534; }
.hsm-toast-error         { background: #991b1b; }
.hsm-toast-warning       { background: #92400e; }

/* ═════════════════════════════════════════════════════════════
   FORM
═════════════════════════════════════════════════════════════ */
.hsm-panel h2 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 20px;
    color: var(--hsm-text);
}

.hsm-form {
    background: #fff;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius);
    padding: 24px;
    box-shadow: var(--hsm-shadow);
    max-width: 700px;
}

.hsm-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.hsm-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.hsm-field-sm { max-width: 120px; }

.hsm-field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--hsm-gray-600);
}

.hsm-field input,
.hsm-field select,
.hsm-field textarea {
    padding: 8px 10px;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius-sm);
    font-size: 14px;
    font-family: inherit;
    color: var(--hsm-text);
    background: #fff;
    transition: border-color var(--hsm-transition), box-shadow var(--hsm-transition);
    width: 100%;
}

.hsm-field input:focus,
.hsm-field select:focus,
.hsm-field textarea:focus {
    outline: none;
    border-color: var(--hsm-blue);
    box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

.hsm-field-error input,
.hsm-field-error select {
    border-color: var(--hsm-red);
    box-shadow: 0 0 0 3px rgba(239,68,68,.12);
}

.req { color: var(--hsm-red); }
.hsm-optional { font-weight: 400; color: var(--hsm-gray-400); font-size: 11px; }

.hsm-form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    align-items: center;
    flex-wrap: wrap;
}
.hsm-hint { font-size: 12px; color: var(--hsm-gray-400); margin: 0 0 16px; }

/* ═════════════════════════════════════════════════════════════
   CATEGORIES
═════════════════════════════════════════════════════════════ */
.hsm-cat-editor {
    background: #fff;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius);
    padding: 24px;
    box-shadow: var(--hsm-shadow);
    max-width: 500px;
}

.hsm-cat-add {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.hsm-cat-add .hsm-input { flex: 1; }

.hsm-cat-list {
    list-style: none;
    margin: 0 0 16px;
    padding: 0;
    border: 1px solid var(--hsm-gray-100);
    border-radius: var(--hsm-radius-sm);
    overflow: hidden;
    max-height: 360px;
    overflow-y: auto;
}

.hsm-cat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--hsm-gray-100);
    transition: background var(--hsm-transition);
}

.hsm-cat-item:last-child { border-bottom: none; }
.hsm-cat-item:hover { background: var(--hsm-gray-50); }

.hsm-cat-drag { color: var(--hsm-gray-400); cursor: grab; user-select: none; font-size: 16px; }

.hsm-cat-input {
    flex: 1;
    border: 1px solid transparent;
    background: transparent;
    padding: 4px 6px;
    font-size: 14px;
}
.hsm-cat-input:hover, .hsm-cat-input:focus { background: #fff; border-color: var(--hsm-gray-200); }

.hsm-cat-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.hsm-cat-hint { font-size: 12px; color: var(--hsm-gray-400); }

/* ═════════════════════════════════════════════════════════════
   SHOPPING LIST
═════════════════════════════════════════════════════════════ */
.hsm-shopping-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.hsm-shopping-header h2 { margin: 0; }

.hsm-shopping-actions { display: flex; gap: 8px; }

#hsm-shopping-body {
    background: #fff;
    border: 1px solid var(--hsm-gray-200);
    border-radius: var(--hsm-radius);
    box-shadow: var(--hsm-shadow);
    overflow: hidden;
    max-width: 600px;
}

.hsm-check-group { padding: 4px 16px 10px; }

.hsm-check-cat-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--hsm-gray-400);
    font-weight: 700;
    margin: 14px 0 6px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--hsm-gray-100);
}

.hsm-check-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 0;
    cursor: pointer;
    border-bottom: 1px solid var(--hsm-gray-50);
    transition: all var(--hsm-transition);
}

.hsm-check-item:last-child { border-bottom: none; }

.hsm-check-item input[type="checkbox"] {
    width: 17px;
    height: 17px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--hsm-green);
    flex-shrink: 0;
}

.hsm-check-content { flex: 1; }

.hsm-check-name {
    display: block;
    font-size: 15px;
    font-weight: 500;
    transition: all var(--hsm-transition);
}

.hsm-check-meta {
    display: block;
    font-size: 12px;
    color: var(--hsm-gray-400);
    margin-top: 1px;
}

.hsm-checked .hsm-check-name {
    text-decoration: line-through;
    color: var(--hsm-gray-400);
}

.hsm-checked { opacity: .65; }

.hsm-shopping-footer {
    text-align: center;
    font-size: 12px;
    color: var(--hsm-gray-400);
    margin-top: 10px;
    padding: 8px;
}

/* ═════════════════════════════════════════════════════════════
   RESPONSIVE
═════════════════════════════════════════════════════════════ */
@media (max-width: 680px) {
    .hsm-stats-bar         { grid-template-columns: repeat(2,1fr); }
    .hsm-form-row          { grid-template-columns: 1fr; }
    .hsm-tabs              { gap: 0; }
    .hsm-tab               { min-width: 0; font-size: 12px; padding: 8px 10px; }
    .hsm-table thead th:nth-child(6),
    .hsm-table td:nth-child(6) { display: none; } /* hide notes on mobile */
    .hsm-toolbar           { flex-direction: column; align-items: stretch; }
    .hsm-toolbar-left,
    .hsm-toolbar-right     { flex-direction: column; }
}

@media (max-width: 420px) {
    .hsm-stats-bar { grid-template-columns: repeat(2,1fr); gap: 8px; }
    .hsm-stat b    { font-size: 20px; }
}