/**
 * Online Document Management System (DMS)
 * Premium Aesthetic Theme & Responsive Layout Stylesheet
 * Vanilla CSS Custom tokens
 */

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    
    --sidebar-bg: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --sidebar-color: #94a3b8;
    --sidebar-active-color: #38bdf8;
    --sidebar-hover-bg: rgba(255, 255, 255, 0.06);
    
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.15);
    
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.02);
    --card-border: 1px solid rgba(226, 232, 240, 0.8);
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Outfit', 'Sarabun', sans-serif;
    font-size: 0.95rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Base Wrapper for layout containing sidebar and main body */
.app-wrapper {
    display: flex;
    flex: 1;
    width: 100%;
    min-height: 100vh;
    position: relative;
}

/* ==========================================================================
   SIDEBAR COMPONENT
   ========================================================================== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: #f8fafc;
    flex-shrink: 0;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    z-index: 100;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    box-shadow: 4px 0 25px rgba(15, 23, 42, 0.15);
}

.sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: #ffffff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
}

.sidebar-brand i {
    background: linear-gradient(135deg, #38bdf8 0%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 14px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    overflow-y: auto;
}

.sidebar-menu::-webkit-scrollbar {
    width: 4px;
}
.sidebar-menu::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.sidebar-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--sidebar-color);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: var(--transition-smooth);
}

.sidebar-item a:hover {
    color: #ffffff;
    background-color: var(--sidebar-hover-bg);
    transform: translateX(4px);
}

.sidebar-item.active a {
    color: #ffffff;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.sidebar-item.active a i {
    color: #ffffff;
}

.sidebar-item i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
    transition: var(--transition-smooth);
}

.sidebar-footer {
    padding: 15px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.8rem;
    color: #64748b;
}

/* ==========================================================================
   CONTENT WRAPPER
   ========================================================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition-smooth);
    padding-bottom: 70px; /* Space for the sticky fixed footer */
}

/* ==========================================================================
   NAVBAR COMPONENT
   ========================================================================== */
.main-navbar {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: var(--card-border);
    padding: 15px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 99;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.sidebar-toggle:hover {
    background-color: rgba(15, 23, 42, 0.05);
}

.user-profile-widget {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 50px;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.user-profile-widget:hover {
    background-color: var(--bg-primary);
    border: 1px solid rgba(0,0,0,0.05);
}

.user-avatar-small {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border: 2px solid #ffffff;
}

.user-info-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.user-name-label {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-role-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   CARDS & STATS
   ========================================================================== */
.card-premium {
    background-color: var(--bg-secondary);
    border: var(--card-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    padding: 24px;
    transition: var(--transition-smooth);
}

.card-premium:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px -10px rgba(0, 0, 0, 0.08), 0 3px 10px rgba(0, 0, 0, 0.02);
}

.card-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 16px;
}

.bg-stat-blue { background: rgba(37, 99, 235, 0.1); color: #2563eb; }
.bg-stat-green { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.bg-stat-purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.bg-stat-orange { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }

/* ==========================================================================
   TABLES & DATATABLES
   ========================================================================== */
.table-premium {
    border-collapse: separate;
    border-spacing: 0 8px;
}

.table-premium th {
    font-weight: 600;
    color: var(--text-secondary);
    border: none !important;
    padding: 12px 18px !important;
}

.table-premium tr {
    transition: var(--transition-smooth);
}

.table-premium tbody tr {
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.01);
}

.table-premium tbody tr:hover {
    transform: scale(1.005);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.03);
    background-color: rgba(255, 255, 255, 0.95);
}

.table-premium td {
    border: none !important;
    padding: 16px 18px !important;
    vertical-align: middle;
}

.table-premium td:first-child {
    border-top-left-radius: var(--border-radius-md);
    border-bottom-left-radius: var(--border-radius-md);
}

.table-premium td:last-child {
    border-top-right-radius: var(--border-radius-md);
    border-bottom-right-radius: var(--border-radius-md);
}

/* Badge Styling */
.badge-custom {
    padding: 6px 12px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.3px;
}

.badge-qm { background: rgba(239, 68, 68, 0.1); color: #ef4444; }
.badge-pm { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.badge-st { background: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.badge-wi { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.badge-fm { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.badge-opl { background: rgba(236, 72, 153, 0.1); color: #ec4899; }

/* ==========================================================================
   FIXED FOOTER COMPONENT
   ========================================================================== */
.footer-fixed {
    position: fixed;
    bottom: 0;
    right: 0;
    left: var(--sidebar-width);
    height: 70px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    transition: var(--transition-smooth);
    z-index: 98;
}

/* ==========================================================================
   MODERN FORM INPUTS
   ========================================================================== */
.form-control-premium, .form-select-premium {
    border-radius: var(--border-radius-md);
    border: var(--card-border);
    padding: 12px 16px;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    background-color: #f8fafc;
}

.form-control-premium:focus, .form-select-premium:focus {
    background-color: #ffffff;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-glow);
    outline: none;
}

/* Button Premium styling */
.btn-premium {
    border-radius: var(--border-radius-md);
    padding: 10px 20px;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-premium-primary {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    border: none;
    color: #ffffff;
}

.btn-premium-primary:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

/* ==========================================================================
   RESPONSIVE DESIGN ADAPTATIONS (Desktop, Tablet, Mobile)
   ========================================================================== */

/* Tablet State */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .footer-fixed {
        left: 0 !important;
        padding: 0 20px;
    }
}

/* Mobile State */
@media (max-width: 575.98px) {
    .main-navbar {
        padding: 10px 15px;
    }
    
    .user-name-label {
        display: none;
    }
    
    .footer-fixed {
        height: auto;
        padding: 15px;
        flex-direction: column;
        gap: 6px;
        text-align: center;
        position: relative; /* On tiny screens let it slide to flow layout to prevent overlap if screen height is super short */
    }
    
    .main-content {
        padding-bottom: 0px;
    }
    
    .table-premium td {
        padding: 12px 10px !important;
        font-size: 0.85rem;
    }
}

/* Collapsed Sidebar on Desktop (Optional support) */
.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .sidebar-brand span,
.sidebar.collapsed .sidebar-item span,
.sidebar.collapsed .sidebar-header button,
.sidebar.collapsed .sidebar-footer {
    display: none;
}

.sidebar.collapsed + .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.sidebar.collapsed ~ .footer-fixed {
    left: var(--sidebar-collapsed-width);
}