/* ==================== RESET & BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - ChatGPT Inspired (Dark Mode) */

    /* Backgrounds */
    --bg-primary: #343541;
    /* Main background (Charcoal) */
    --bg-secondary: #444654;
    /* Card/Input background (Lighter Charcoal) */
    --bg-tertiary: #202123;
    /* Sidebar/Header background (Darker) */

    /* Accents */
    --primary-color: #10a37f;
    /* ChatGPT Teal */
    --primary-hover: #1a7f64;
    --accent-color: #10a37f;

    /* Text */
    --text-primary: #ececf1;
    --text-secondary: #c5c5d2;
    --text-muted: #8e8ea0;

    /* Borders & Lines */
    --border-color: #565869;
    /* Subtle border */
    --border-hover: #acacbe;

    /* Functional Colors */
    --danger-color: #ef4146;
    --success-color: #10a37f;
    /* Often same as primary in this theme */
    --warning-color: #eab308;

    /* Shadows - Subtle & Flat */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 2rem;

    /* Border Radius - Refined */
    --radius-sm: 4px;
    --radius-md: 6px;
    /* Slightly squarer than before */
    --radius-lg: 8px;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.25s ease-in-out;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    /* Explicit base size for readability */
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    width: min(1480px, calc(100vw - 12px));
    max-width: 1480px;
    margin: 0 auto;
    padding: clamp(0.35rem, 1vw, 0.9rem);
}

/* ==================== HEADER ==================== */
/* ==================== HEADER ==================== */
.header {
    background: var(--bg-tertiary);
    /* Keep the sidebar-like color */
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem var(--spacing-lg);
    /* Thinner top/bottom padding */
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: none;

    /* Flexbox for alignment */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Removed unused .header-content */

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon svg {
    display: block;
    width: 24px;
    /* Smaller icon */
    height: 24px;
}

.logo-icon .logo-bg {
    fill: transparent;
    /* No background box for cleaner look */
}

.logo-icon path {
    stroke: var(--text-secondary);
    /* Subtle icon color */
    stroke-width: 2.5;
}

.title-container h1 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin: 0;
    letter-spacing: 0.01em;
    cursor: default;
}

.title-container h1:hover {
    color: var(--text-secondary);
    /* Interactive feel */
}

.title-container .subtitle {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

/* ==================== TABS ==================== */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
}

.tab-button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.tab-button.active {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-weight: 600;
}

/* ==================== CONTENT CARDS ==================== */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-card,
.table-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.9rem;
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.form-card h2,
.table-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: var(--spacing-sm);
}

/* ==================== FORMS ==================== */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 992px) {
    .equipment-form .form-grid {
        grid-template-columns: repeat(2, minmax(260px, 1fr)) !important;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.field-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}

.lock-field-check {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}

.lock-field-check input[type="checkbox"] {
    accent-color: var(--primary-color);
    cursor: pointer;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    /* Darker input bg */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ==================== BUTTONS ==================== */
.btn-primary,
.btn-export,
.btn-delete,
.btn-edit,
.btn-export-all,
.btn-cancel {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

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

.btn-export,
.btn-export-all {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-export:hover,
.btn-export-all:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.btn-edit,
.btn-delete {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);

    /* Equal sizing */
    min-width: 100px;
    /* Fixed width for consistency */
    text-align: center;
}

.btn-edit {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-edit:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.btn-delete {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.btn-delete:hover {
    background-color: rgba(239, 65, 70, 0.1);
    color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-cancel {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-cancel:hover {
    text-decoration: underline;
    color: var(--text-primary);
}

/* ==================== TABLE ==================== */
.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.table-filters {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.table-filter-input,
.table-filter-select {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: inherit;
}

.table-filter-input:focus,
.table-filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.2);
}

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

thead {
    background: var(--bg-tertiary);
}

th {
    padding: 0.5rem 0.35rem;
    text-align: left;
    font-size: 0.58rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    white-space: normal;
    line-height: 1.15;
}

th:last-child {
    border-right: none;
}

tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: var(--bg-primary);
    transition: background-color var(--transition-fast);
}

tbody tr:last-child {
    border-bottom: none;
}

tbody tr:nth-child(even):not(.empty-state) {
    background: rgba(255, 255, 255, 0.015);
}

tbody tr:hover:not(.empty-state) {
    background: rgba(16, 163, 127, 0.08);
}

td {
    padding: 0.5rem 0.35rem;
    font-size: 0.72rem;
    color: var(--text-primary);
    line-height: 1.3;
    vertical-align: middle;
    border-right: 1px solid rgba(172, 172, 190, 0.35);
    overflow-wrap: anywhere;
}

td:last-child {
    border-right: none;
}

/* Actions Column */
th.actions-column,
td.actions-cell {
    width: 72px;
    min-width: 72px;
    white-space: nowrap;
}

td.actions-cell {
    text-align: right;
}

.actions-group {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.2rem;
}

.btn-edit,
.btn-delete {
    min-width: 70px;
    padding: 0.35rem 0.45rem;
    font-size: 0.74rem;
}

.btn-icon-only {
    min-width: 26px;
    width: 26px;
    height: 26px;
    padding: 0;
}

.btn-icon-only svg {
    width: 13px;
    height: 13px;
}

/* Sortable Headers */
th.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-right: 1rem;
    /* Make space for icon */
}

th.sortable:hover {
    color: var(--text-primary);
}

.sort-icon {
    display: inline-flex;
    align-items: center;
    position: absolute;
    right: 0.2rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.3;
    transition: opacity var(--transition-fast);
}

th.sortable:hover .sort-icon {
    opacity: 0.7;
}

th.sortable.sort-asc .sort-icon,
th.sortable.sort-desc .sort-icon {
    opacity: 1;
    color: var(--primary-color);
}

th.sortable.sort-asc .sort-icon svg {
    transform: rotate(0deg);
    transition: transform var(--transition-fast);
}

th.sortable.sort-desc .sort-icon svg {
    transform: rotate(180deg);
    transition: transform var(--transition-fast);
}

.empty-state td {
    padding: 3rem 1rem;
    text-align: center;
    background: var(--bg-primary);
}

.empty-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

.empty-message svg {
    margin-bottom: 0.5rem;
    stroke: var(--text-secondary);
}

/* ==================== TOAST ==================== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    font-size: 0.95rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    border-left-color: var(--danger-color);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .tabs {
        flex-direction: column;
    }

    .table-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .table-filters {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    th,
    td {
        padding: 0.7rem 0.55rem;
    }

    th.actions-column,
    td.actions-cell {
        min-width: 190px;
    }

    .actions-group {
        gap: 0.35rem;
    }

    .btn-edit,
    .btn-delete {
        min-width: 86px;
        padding: 0.45rem 0.55rem;
        font-size: 0.8rem;
    }
}