/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
    line-height: 1.4;
    font-family: inherit;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: var(--text-on-accent); }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { filter: brightness(1.1); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(1.1); }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover:not(:disabled) { filter: brightness(1.1); }

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg-tertiary); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) { background: var(--bg-secondary); color: var(--text-primary); }

.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-lg { padding: 12px 24px; font-size: 1rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; }
.btn-icon.btn-sm { width: 28px; height: 28px; }

/* ========== Cards ========== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-body { padding: 20px; }
.card-footer { padding: 12px 20px; border-top: 1px solid var(--border); }

/* Stat Cards */
.stat-card {
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.blue { background: var(--accent-light); color: var(--accent); }
.stat-icon.green { background: var(--success-light); color: var(--success); }
.stat-icon.orange { background: var(--warning-light); color: var(--warning); }
.stat-icon.red { background: var(--danger-light); color: var(--danger); }
.stat-icon.cyan { background: var(--info-light); color: var(--info); }

.stat-info { flex: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.stat-value { font-size: 1.75rem; font-weight: 800; color: var(--text-primary); line-height: 1.2; margin-top: 2px; }

/* ========== Tables ========== */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    padding: 10px 16px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1;
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tr.clickable-row { cursor: pointer; }
.data-table tr.clickable-row:hover td { background: var(--bg-hover); }
.data-table tr.low-stock td { background: var(--danger-light); }

/* ========== Forms ========== */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 9px 12px;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input::placeholder { color: var(--text-tertiary); }
.form-textarea { resize: vertical; min-height: 80px; }
.form-select { cursor: pointer; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

/* ========== Modals ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    animation: fadeIn 0.15s ease;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.2s ease;
}

.modal.modal-md { max-width: 640px; }
.modal.modal-lg { max-width: 900px; }
.modal.modal-xl { max-width: 1100px; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.modal-close:hover { background: var(--bg-secondary); color: var(--text-primary); }

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ========== Toasts ========== */
#toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: #fff;
    box-shadow: var(--shadow-md);
    pointer-events: auto;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    max-width: 400px;
}

.toast.toast-visible {
    opacity: 1;
    transform: translateX(0);
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--accent); }

/* ========== Status Badges ========== */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--badge-color, var(--accent));
    color: #fff;
    white-space: nowrap;
}

/* ========== Search Bar ========== */
.search-bar {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-bar svg {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

.search-bar input {
    width: 100%;
    padding: 9px 12px 9px 38px;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.search-bar input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
    background: var(--bg-input);
}

/* ========== Page Toolbar ========== */
.page-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.page-toolbar .search-bar { min-width: 200px; }

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-primary); }
.empty-state p { font-size: 0.875rem; margin-bottom: 20px; }

/* ========== Loading ========== */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ========== Tabs ========== */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}

.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ========== Pagination ========== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}

.pagination button {
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.8rem;
    cursor: pointer;
    font-family: inherit;
}

.pagination button:hover:not(:disabled) { background: var(--bg-secondary); }
.pagination button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

.pagination-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0 12px;
}

/* ========== Confirm Dialog ========== */
.confirm-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ========== Grid Layouts ========== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
}

/* ========== Animations ========== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== Priority Badges ========== */
.priority-low { color: var(--success); }
.priority-normal { color: var(--accent); }
.priority-high { color: var(--warning); }
.priority-urgent { color: var(--danger); font-weight: 700; }

/* ========== Qty Stepper ========== */
.qty-stepper {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.qty-stepper button {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-stepper button:hover { background: var(--bg-tertiary); }

.qty-stepper .qty-value {
    width: 40px;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    background: var(--bg-input);
    color: var(--text-primary);
    padding: 4px;
    font-family: inherit;
}

/* ========== Autocomplete ========== */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    box-shadow: var(--shadow-md);
    max-height: 220px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.autocomplete-dropdown.visible {
    display: block;
}

.autocomplete-item {
    padding: 8px 12px;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.1s;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background: var(--bg-hover);
}

.autocomplete-item .ac-brand {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.autocomplete-item .ac-match {
    font-weight: 700;
    color: var(--accent);
}

/* Remove spinner from number inputs */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }