/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette - Purple & White Theme */
    --color-purple-50: #f5f3ff;
    --color-purple-100: #ede9fe;
    --color-purple-200: #ddd6fe;
    --color-purple-300: #c4b5fd;
    --color-purple-400: #a78bfa;
    --color-purple-500: #8b5cf6;
    --color-purple-600: #7c3aed;
    --color-purple-700: #6d28d9;
    --color-purple-800: #5b21b6;
    --color-purple-900: #4c1d95;
    
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;

    /* Semantic Mappings (Light Mode - Default) */
    --bg-app: var(--color-gray-50);
    --bg-card: var(--color-white);
    --bg-sidebar: #1e1b4b; /* Deep Indigo for premium look */
    --text-main: var(--color-gray-900);
    --text-muted: var(--color-gray-500);
    --text-on-sidebar: #e0e7ff;
    --border-color: var(--color-gray-200);
    --color-primary: var(--color-purple-600);
    --color-primary-hover: var(--color-purple-700);
    --color-primary-light: var(--color-purple-100);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    
    --transition-base: all 0.2s ease-in-out;
    --font-ui: 'Inter', 'Sarabun', sans-serif;
}

/* Dark Theme Overrides */
html[data-theme="dark"] {
    --bg-app: #090d16;
    --bg-card: #131926;
    --bg-sidebar: #0b0e17;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: #222c3f;
    --color-primary: var(--color-purple-500);
    --color-primary-hover: var(--color-purple-400);
    --color-primary-light: rgba(139, 92, 246, 0.15);
    --color-gray-100: #1a2235;
    --color-gray-200: #222c3f;
    --color-gray-50: #0b0f19;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-app);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-base);
}
a:hover {
    color: var(--color-primary-hover);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-app);
}
::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: var(--border-radius-sm);
}
html[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--color-gray-700);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-400);
}

/* ==========================================================================
   LAYOUT STRUCTURE
   ========================================================================== */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Sidebar Styling */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    color: var(--text-on-sidebar);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    transition: var(--transition-base);
    z-index: 10;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 3rem;
}
.brand-icon {
    width: 45px;
    height: 45px;
    background-color: var(--color-purple-500);
    color: white;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 10px rgba(139, 92, 246, 0.3);
}
.brand-text h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: 0.5px;
}
.brand-text p {
    font-size: 0.75rem;
    color: var(--color-purple-300);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-on-sidebar);
    border-radius: var(--border-radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-base);
}
.nav-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    opacity: 0.8;
}
.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: white;
}
.nav-link.active {
    background-color: var(--color-purple-600);
    color: white;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
}
.nav-link.active i {
    opacity: 1;
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.theme-toggle-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-on-sidebar);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-base);
}
.theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

/* Main Content Styling */
.main-content {
    flex-grow: 1;
    padding: 2rem 2.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

/* Header Component */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}
.header-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}
.header-title p {
    font-size: 0.9rem;
}
.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--border-radius-md);
    font-family: var(--font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-base);
}
.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(124, 58, 237, 0.2);
}
.btn-secondary {
    background-color: var(--color-gray-100);
    border-color: var(--border-color);
    color: var(--text-main);
}
.btn-secondary:hover {
    background-color: var(--color-gray-200);
    color: var(--text-main);
}
.btn-danger {
    background-color: var(--color-danger);
    color: white;
}
.btn-danger:hover {
    background-color: #dc2626;
}
.btn-success {
    background-color: var(--color-success);
    color: white;
}
.btn-success:hover {
    background-color: #059669;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-base);
}
.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-title {
    font-size: 1.1rem;
    font-weight: 650;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.card-body {
    padding: 1.5rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
    text-align: center;
}
.badge-lg {
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
}
.badge-status-1 { background-color: var(--color-gray-100); color: var(--color-gray-700); }
.badge-status-2 { background-color: var(--color-info-light); color: var(--color-info); }
.badge-status-3 { background-color: var(--color-info-light); color: #2563eb; border: 1px solid rgba(59, 130, 246, 0.3); }
.badge-status-4 { background-color: #ecfdf5; color: #059669; }
.badge-status-5 { background-color: var(--color-warning-light); color: #d97706; }
.badge-status-6 { background-color: var(--color-warning-light); color: var(--color-warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-status-7 { background-color: #e0f2fe; color: #0284c7; }
.badge-status-8 { background-color: var(--color-success-light); color: var(--color-success); }

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr); /* จัดการ์ดทั้ง 5 ใบให้อยู่ในแถวเดียวกันบนจอเดสก์ท็อป */
    gap: 1rem; /* ลดระยะห่างลงเล็กน้อยเพื่อให้พอดี */
}
.kpi-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}
.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-purple-300);
}
.kpi-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.bg-purple-light { background-color: rgba(124, 58, 237, 0.1); }
.bg-blue-light { background-color: rgba(59, 130, 246, 0.1); }
.bg-orange-light { background-color: rgba(245, 158, 11, 0.1); }
.bg-green-light { background-color: rgba(16, 185, 129, 0.1); }
.text-purple { color: var(--color-purple-600); }
.text-blue { color: var(--color-info); }
.text-orange { color: var(--color-warning); }
.text-green { color: var(--color-success); }

.kpi-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.kpi-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
}
.kpi-value {
    font-size: 1.4rem;
    font-weight: 700;
}

/* ==========================================================================
   SECTIONS MANAGEMENT
   ========================================================================== */
.content-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}
.content-section.active {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   TIMELINE (GANTT CHART) COMPONENT
   ========================================================================== */
.timeline-card {
    width: 100%;
}
.timeline-legend {
    display: flex;
    gap: 1rem;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}
.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    display: inline-block;
}
.bg-status-1 { background-color: var(--color-gray-400); }
.bg-status-3 { background-color: var(--color-info); }
.bg-status-5 { background-color: var(--color-warning); }
.bg-status-8 { background-color: var(--color-success); }

.timeline-container-wrapper {
    overflow-x: auto;
    padding-bottom: 0.5rem;
}
.timeline-container {
    min-width: 800px;
    position: relative;
    padding: 1rem 0;
}

/* Gantt Chart Layout */
.gantt-grid {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 1rem;
    position: relative;
}
.gantt-header-space {
    width: 220px;
    flex-shrink: 0;
}
.gantt-months {
    display: flex;
    flex-grow: 1;
}
.gantt-month-col {
    flex: 1;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 0.5rem 0;
    border-left: 1px dashed var(--border-color);
}
.gantt-rows {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    position: relative;
}

/* Grid Lines background overlay */
.gantt-grid-lines {
    position: absolute;
    top: 0;
    left: 220px;
    right: 0;
    bottom: 0;
    display: flex;
    pointer-events: none;
    z-index: 1;
}
.gantt-grid-line-col {
    flex: 1;
    height: 100%;
    border-left: 1px dashed var(--border-color);
}

.gantt-row {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 2;
}
.gantt-project-info {
    width: 220px;
    padding-right: 1rem;
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}
.gantt-project-info:hover {
    color: var(--color-primary);
}
.gantt-bar-container {
    flex-grow: 1;
    height: 28px;
    position: relative;
    background-color: rgba(0, 0, 0, 0.02);
    border-radius: var(--border-radius-sm);
}
html[data-theme="dark"] .gantt-bar-container {
    background-color: rgba(255, 255, 255, 0.01);
}
.gantt-bar {
    position: absolute;
    height: 100%;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    padding: 0 0.75rem;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}
.gantt-bar:hover {
    transform: scaleY(1.08);
    box-shadow: var(--shadow-md);
    filter: brightness(1.1);
}

.timeline-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem 0;
    color: var(--text-muted);
}
.timeline-empty-state i {
    font-size: 2.5rem;
    opacity: 0.5;
}

/* ==========================================================================
   DASHBOARD ADDITIONAL DETAILS
   ========================================================================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 1.5rem;
}

/* Status Summary List */
.status-summary-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.status-summary-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background-color: var(--color-gray-50);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}
.status-item-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    font-weight: 550;
}
.status-indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.status-item-count {
    font-size: 0.9rem;
    font-weight: 700;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 0.15rem 0.6rem;
    border-radius: var(--border-radius-sm);
}

/* Recent Projects List */
.recent-projects-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}
.recent-project-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-base);
}
.recent-project-item:last-child {
    border-bottom: none;
}
.recent-project-item:hover {
    background-color: var(--color-gray-50);
    border-radius: var(--border-radius-md);
}
.recent-project-name {
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.recent-project-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================================================
   FORMS STYLING
   ========================================================================== */
.form-card {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}
.form-row {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
    min-width: 200px;
}
.col-12 { flex: 0 0 100%; }
.col-6 { flex: 0 0 calc(50% - 0.625rem); }
.col-4 { flex: 0 0 calc(33.33% - 0.83rem); }

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
}
label.required::after {
    content: " *";
    color: var(--color-danger);
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    font-family: var(--font-ui);
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-main);
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-base);
    width: 100%;
}

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

.input-readonly {
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    background-color: var(--color-gray-50);
    color: var(--text-main);
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    min-height: 40px;
    display: flex;
    align-items: center;
}

.pointer {
    cursor: pointer;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   TABLE COMPONENT
   ========================================================================== */
.table-responsive {
    overflow-x: auto;
}
.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.table th,
.table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.table th {
    font-weight: 600;
    color: var(--text-muted);
    background-color: var(--color-gray-50);
}
.table tbody tr {
    transition: var(--transition-base);
}
.table tbody tr:hover {
    background-color: rgba(124, 58, 237, 0.02);
}
html[data-theme="dark"] .table tbody tr:hover {
    background-color: rgba(139, 92, 246, 0.02);
}

.table-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}
.btn-icon {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-base);
}
.btn-icon:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}
.btn-icon.btn-icon-danger:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
    background-color: var(--color-danger-light);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 4rem 2rem;
    color: var(--text-muted);
}
.empty-state i {
    font-size: 3rem;
    opacity: 0.4;
}
.hidden {
    display: none !important;
}

/* ==========================================================================
   PROJECT DETAIL & WORKFLOW STYLES
   ========================================================================== */
.back-link {
    margin-bottom: 0.5rem;
}
.back-link a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.detail-header-card {
    padding: 1.75rem;
}
.detail-header-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.detail-header-budget {
    text-align: right;
    background-color: var(--color-gray-50);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}
.text-2xl {
    font-size: 1.5rem;
    font-weight: 700;
}
.text-sm { font-size: 0.8rem; }
.d-block { display: block; }
.font-bold { font-weight: 700; }
.my-4 { margin-top: 1rem; margin-bottom: 1rem; }

/* Workflow Interactive Steps */
.workflow-title {
    font-size: 0.95rem;
    font-weight: 650;
    margin-bottom: 1rem;
    color: var(--text-muted);
}
.workflow-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin: 1.5rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}
.workflow-steps::before {
    content: "";
    position: absolute;
    top: 18px;
    left: 15px;
    right: 15px;
    height: 3px;
    background-color: var(--border-color);
    z-index: 1;
}
/* Indicator Line covering completed steps */
.workflow-step-item {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 100px;
    text-align: center;
    cursor: pointer;
}
.workflow-step-node {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 3px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    transition: var(--transition-base);
}
.workflow-step-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    max-width: 110px;
    line-height: 1.3;
    transition: var(--transition-base);
}

/* Active and Completed Workflow States */
.workflow-step-item.completed .workflow-step-node {
    border-color: var(--color-success);
    background-color: var(--color-success);
    color: white;
}
.workflow-step-item.completed .workflow-step-label {
    color: var(--color-success);
}

.workflow-step-item.active .workflow-step-node {
    border-color: var(--color-primary);
    background-color: var(--bg-card);
    color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
    transform: scale(1.1);
}
.workflow-step-item.active .workflow-step-label {
    color: var(--color-primary);
    font-weight: 700;
}

/* Tab controls */
.tab-container {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    gap: 1.5rem;
}
.tab-btn {
    padding: 0.75rem 0.5rem;
    font-family: var(--font-ui);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.tab-btn:hover {
    color: var(--color-primary);
}
.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.25s ease-in-out;
}
.tab-content.active {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Info Grid Layout */
.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}
.info-group h5 {
    font-size: 1rem;
    font-weight: 650;
    margin-bottom: 1rem;
    color: var(--color-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}
.info-table {
    width: 100%;
    border-collapse: collapse;
}
.info-table th,
.info-table td {
    padding: 0.6rem 0;
    font-size: 0.88rem;
    vertical-align: top;
}
.info-table th {
    width: 35%;
    font-weight: 600;
    color: var(--text-muted);
    text-align: left;
}
.info-table td {
    color: var(--text-main);
}

/* ==========================================================================
   REIMBURSEMENT FORM SPECIFIC
   ========================================================================== */
.reimbursement-method-selector {
    display: flex;
    gap: 1.5rem;
}
.radio-card {
    flex: 1;
    cursor: pointer;
    position: relative;
}
.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}
.radio-card-content {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    transition: var(--transition-base);
}
.radio-card-content i {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}
.radio-card-content strong {
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.2rem;
}
.radio-card-content p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.radio-card input[type="radio"]:checked + .radio-card-content {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}
.radio-card input[type="radio"]:checked + .radio-card-content i {
    color: var(--color-primary);
}

.method-fields-container {
    display: none;
    padding: 1.25rem;
    background-color: var(--color-gray-50);
    border-radius: var(--border-radius-md);
    border: 1px dashed var(--border-color);
    animation: fadeIn 0.25s ease;
}
.method-fields-container.active {
    display: block;
}

/* Expense Categories Wrapper */
.expense-category-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: 1.25rem;
    overflow: hidden;
}
.expense-category-header {
    background-color: var(--color-gray-50);
    padding: 0.75rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.expense-category-title-input {
    font-family: var(--font-ui);
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    background: transparent;
    padding: 0.25rem 0.5rem;
    width: 60%;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-base);
}
.expense-category-title-input:hover,
.expense-category-title-input:focus {
    border-color: var(--border-color);
    background-color: var(--bg-card);
}
.expense-category-sum {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary);
}
.expense-category-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.expense-items-table {
    width: 100%;
    border-collapse: collapse;
}
.expense-items-table th,
.expense-items-table td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border-color);
}
.expense-items-table th {
    background-color: rgba(0, 0, 0, 0.01);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}
html[data-theme="dark"] .expense-items-table th {
    background-color: rgba(255, 255, 255, 0.01);
}
.expense-items-table input {
    padding: 0.45rem 0.65rem;
    font-size: 0.85rem;
    border-radius: var(--border-radius-sm);
}

.d-flex { display: flex; }
.justify-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.w-100 { width: 100%; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.text-xs { font-size: 0.75rem; }
.text-center { text-align: center; }
.mt-2 { margin-top: 0.5rem; }

/* Backup Section Styling */
.backup-actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.backup-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    background-color: var(--bg-card);
}
.backup-card.border-danger {
    border-color: rgba(239, 68, 68, 0.2);
}
.backup-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   PRINT LAYOUT SPECIFIC (ONLY-PRINT)
   ========================================================================== */
/* ซ่อนสิ่งพิมพ์ในหน้าจอธรรมดา */
.only-print {
    display: none;
}

@media print {
    /* ซ่อนหน้าเว็บปกติทั้งหมด */
    .no-print {
        display: none !important;
    }

    /* แสดงส่วนจัดพิมพ์ */
    .only-print {
        display: block !important;
    }

    /* รีเซ็ตดีไซน์พื้นฐานเพื่อการพิมพ์ */
    html, body {
        background-color: #ffffff !important;
        color: #000000 !important;
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif !important;
        font-size: 16pt !important;
        line-height: 1.8 !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* ตั้งค่าหน้ากระดาษ (มาตรฐานสากล/ราชการไทย ระยะขอบ บน 2.54 ซม (1 นิ้ว), ขวา 2 ซม, ล่าง 2 ซม, ซ้าย 2.54 ซม (1 นิ้ว)) */
    @page {
        size: A4;
        margin: 2.54cm 2cm 2cm 2.54cm;
    }

    .print-layout-container {
        width: 100%;
        background-color: #ffffff;
    }

    /* การแบ่งหน้ากระดาษ */
    .print-page {
        page-break-after: always;
        position: relative;
        box-sizing: border-box;
        background-color: #ffffff;
    }
    .print-page:last-child {
        page-break-after: avoid;
    }

    /* หน้าที่ 1: ใบปะหน้าสรุป */
    .print-cover-page {
        padding-top: 0; /* นำระยะเว้นภายในออกเพื่อให้บรรทัดแรกเริ่มห่างจากขอบกระดาษ 2.54cm พอดี */
        text-align: left;
    }

    .print-document-title {
        font-size: 29pt;
        font-weight: bold;
        text-align: center;
        margin-bottom: 1cm; /* ลดระยะห่างลงมาเหลือ 1cm */
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
    }

    .print-project-name {
        font-size: 18pt; /* ปรับขนาดฟอนต์เป็น 18pt ตัวหนาตามที่ระบุ */
        font-weight: bold;
        text-align: center;
        margin-bottom: 0.5cm; /* ลดระยะห่างระหว่างชื่อโครงการและย่อหน้าเหลือ 0.5cm เพื่อให้ชิดกระชับขึ้น */
        line-height: 1.5;
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
    }

    .print-paragraph-content {
        font-size: 16pt;
        text-indent: 1.5cm; /* ย่อหน้าไทยดั้งเดิม */
        text-align: justify;
        line-height: 1.8;
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
    }

    /* หน้าที่ 2 เป็นต้นไป: ตารางหลักฐานเงินแยกประเภท */
    .print-table-page {
        padding-top: 0; /* นำระยะเว้นภายในออกเพื่อให้บรรทัดแรกเริ่มห่างจากขอบกระดาษ 2.54cm พอดี */
        page-break-before: always; /* บังคับขึ้นหน้าใหม่เสมอสำหรับประเภทค่าใช้จ่ายย่อย */
    }

    .print-category-header {
        font-size: 16pt;
        font-weight: bold;
        margin-bottom: 0.2cm; /* ลดระยะห่างเหลือ 0.2cm เพื่อให้ชิดกับข้อความรายละเอียด */
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
    }

    .print-table-sub {
        font-size: 15pt;
        margin-bottom: 0.3cm; /* ลดระยะห่างเหลือ 0.3cm เพื่อให้ตารางขยับขึ้นมาชิดกระชับ */
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
    }

    /* ตารางพิมพ์ */
    .print-table {
        width: calc(100% - 2px); /* ป้องกันขอบตารางด้านขวาขาดหายเนื่องจากข้อบกพร่องในการคำนวณ border-collapse ของเบราว์เซอร์ */
        border-collapse: collapse;
        margin-bottom: 1.5cm;
        font-family: 'TH SarabunPSK', 'TH Sarabun New', 'Sarabun', sans-serif;
        font-size: 14pt;
        box-sizing: border-box;
    }

    .print-table th, 
    .print-table td {
        border: 1px solid #000000;
        padding: 6px 10px; /* ปรับลดพื้นที่ว่างให้มีความหนาแน่นพอดีและสวยงามกระชับขึ้น */
        line-height: 1.4;
        vertical-align: middle;
    }

    .print-table th {
        font-weight: bold;
        background-color: transparent !important;
        text-align: center;
        white-space: nowrap; /* บังคับให้หัวตารางอยู่ในบรรทัดเดียวกันทั้งหมด ไม่เกิดการตัดคำ */
    }

    /* การจัดแนวในคอลัมน์ตาราง */
    .print-table td.col-idx {
        text-align: center;
        width: 5%;
    }
    .print-table td.col-desc {
        text-align: left;
        width: 58%;
    }
    .print-table td.col-book {
        text-align: center;
        width: 9%;
    }
    .print-table td.col-no {
        text-align: center;
        width: 12%;
    }
    .print-table td.col-amount {
        text-align: right;
        width: 16%;
    }
}

/* ==========================================================================
   LOGIN OVERLAY STYLING (ระบบความปลอดภัยก่อนเข้าใช้ระบบ)
   ========================================================================== */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle at top left, rgba(139, 92, 246, 0.15), var(--bg-body));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999999; /* สูงกว่าไซด์บาร์และเนื้อหาทั้งหมด */
    transition: opacity 0.3s ease;
}
.login-overlay.hidden {
    display: none !important;
}
.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: loginSlideUp 0.4s ease-out;
}
@keyframes loginSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.login-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.login-logo {
    width: 70px;
    height: 70px;
    background-color: rgba(139, 92, 246, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.login-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}
.login-header p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}
.password-input-wrapper {
    position: relative;
    width: 100%;
}
.password-input-wrapper input {
    width: 100%;
    padding: 10px 45px 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-body);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}
.password-input-wrapper input:focus {
    border-color: var(--color-purple-500);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25);
}
.btn-toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0;
    outline: none;
    display: flex;
    align-items: center;
}
.btn-toggle-password:hover {
    color: var(--text-main);
}
.text-error {
    font-size: 0.8rem;
    color: var(--color-danger);
    margin-top: 0.4rem;
    display: block;
}
.text-error.hidden {
    display: none !important;
}
.login-footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: 0.5rem;
}

/* Filter Grid Layout (สำหรับจัดวางตัวกรองให้อยู่ในบรรทัดเดียวกัน) */
.filter-grid {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    align-items: flex-end;
}
.filter-grid .form-group {
    margin-bottom: 0;
    flex: 1;
    min-width: 160px;
}
.filter-grid .form-group:first-child {
    flex: 2.2; /* ให้กล่องกรอกคำค้นหาโครงการมีความกว้างมากกว่าปกติ */
    min-width: 280px;
}

/* ==========================================================================
   ADMIN OPTION MANAGER COMPONENT
   ========================================================================== */
.admin-option-manager {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.5rem;
    background-color: var(--bg-body);
    min-height: 100px;
}
.admin-option-item {
    transition: var(--transition-base);
}
.admin-option-item:hover {
    background-color: var(--border-color) !important;
}

/* ==========================================================================
   CLOUD SYNC STATUS INDICATOR
   ========================================================================== */
.sync-status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    background: rgba(0, 0, 0, 0.03);
    transition: var(--transition-base);
}
[data-theme="dark"] .sync-status-indicator {
    background: rgba(255, 255, 255, 0.03);
}
.sync-status-indicator i {
    font-size: 0.95rem;
}

/* ==========================================================================
   MOBILE RESPONSIVE NAV BAR & LAYOUT
   ========================================================================== */
.mobile-nav-bar {
    display: none;
    align-items: center;
    gap: 1rem;
    background-color: var(--bg-sidebar);
    color: var(--text-on-sidebar);
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 1rem;
    border-radius: var(--border-radius-md);
}
.mobile-toggle-btn {
    background: none;
    border: none;
    color: var(--text-on-sidebar);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-base);
}
.mobile-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}
.mobile-brand-title {
    font-family: var(--font-ui);
    font-weight: 700;
    font-size: 1.1rem;
}

.sidebar-backdrop {
    display: none;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-nav-bar {
        display: flex;
    }
    
    .sidebar-backdrop {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }
    
    .sidebar-backdrop.show {
        opacity: 1;
        pointer-events: auto;
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: -280px; /* Hide offscreen */
        height: 100vh;
        z-index: 1000;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        transition: left 0.3s ease;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        padding: 1.25rem 1rem;
    }
    
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-2col {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .backup-actions-grid {
        grid-template-columns: 1fr;
    }
    
    /* Project Detail Tabs */
    .tab-navigation {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.5rem;
        width: 100%;
        display: flex;
        gap: 1rem;
    }
    
    .tab-btn {
        flex-shrink: 0;
    }
    
    /* Gantt chart responsiveness */
    .gantt-chart-container {
        overflow-x: auto;
        width: 100%;
    }
    
    .gantt-chart-wrapper {
        min-width: 768px; /* Force min-width to trigger scroll if container is smaller */
    }
    
    /* Modal dialog overrides */
    .modal-content {
        width: 95% !important;
        margin: 1.5rem auto;
        padding: 1.5rem 1.25rem !important;
    }
    
    /* Filter grid alignment */
    .filter-grid {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    .filter-grid .form-group {
        width: 100%;
        flex: none !important;
        min-width: 0 !important;
    }
    
    /* Excel download & filter bar row */
    .d-flex.justify-content-end.align-items-center {
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.75rem !important;
    }
    .d-flex.justify-content-end.align-items-center div {
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.25rem !important;
    }
    .d-flex.justify-content-end.align-items-center select {
        width: 100%;
    }
    .d-flex.justify-content-end.align-items-center button {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .recent-project-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .detail-header-budget {
        text-align: left;
    }
    
    .workflow-steps {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    .workflow-step {
        flex-direction: row;
        gap: 1rem;
        min-width: 0;
        align-items: center;
        text-align: left;
    }
    .workflow-step::after {
        display: none; /* Hide standard connectors for stacked vertical workflow */
    }
    .step-marker {
        margin-bottom: 0 !important;
    }
}