/* ========================================
   MICROSOFT FLUENT DESIGN SYSTEM
   ======================================== */

:root {
    /* Navy Professional Colors */
    --fluent-navy-primary: #001F3F;
    --fluent-navy-secondary: #003366;
    --fluent-navy-light: #124f78;
    --fluent-navy-dark: #001428;
    
    /* Microsoft Neutral Grays */
    --fluent-white: #FFFFFF;
    --fluent-gray-10: #FAF9F8;
    --fluent-gray-20: #F3F2F1;
    --fluent-gray-30: #EDEBE9;
    --fluent-gray-40: #E1DFDD;
    --fluent-gray-50: #D2D0CE;
    --fluent-gray-60: #C8C6C4;
    --fluent-gray-70: #BEBBB8;
    --fluent-gray-80: #B3B0AD;
    --fluent-gray-90: #605E5C;
    --fluent-gray-100: #484644;
    --fluent-gray-110: #3B3A39;
    --fluent-gray-120: #323130;
    --fluent-gray-130: #292827;
    --fluent-gray-140: #201F1E;
    --fluent-gray-150: #161514;
    --fluent-gray-160: #11100F;
    --fluent-gray-170: #0B0A09;
    --fluent-gray-180: #090807;
    --fluent-gray-190: #060605;
    --fluent-gray-200: #030303;
    
    /* Semantic Colors */
    --fluent-success: #107C10;
    --fluent-success-hover: #0E700E;
    --fluent-warning: #F7630C;
    --fluent-warning-hover: #DE5B0B;
    --fluent-danger: #D13438;
    --fluent-danger-hover: #BC2F32;
    --fluent-info: #0078D4;
    --fluent-info-hover: #006CBE;
    
    /* Spacing (4px base unit) */
    --fluent-space-xs: 4px;
    --fluent-space-sm: 8px;
    --fluent-space-md: 12px;
    --fluent-space-lg: 16px;
    --fluent-space-xl: 20px;
    --fluent-space-2xl: 24px;
    --fluent-space-3xl: 32px;
    --fluent-space-4xl: 40px;
    
    /* Border Radius */
    --fluent-radius-sm: 2px;
    --fluent-radius-md: 4px;
    --fluent-radius-lg: 8px;
    
    /* Shadows */
    --fluent-shadow-sm: 0 1.6px 3.6px 0 rgba(0, 0, 0, 0.132), 0 0.3px 0.9px 0 rgba(0, 0, 0, 0.108);
    --fluent-shadow-md: 0 3.2px 7.2px 0 rgba(0, 0, 0, 0.132), 0 0.6px 1.8px 0 rgba(0, 0, 0, 0.108);
    --fluent-shadow-lg: 0 6.4px 14.4px 0 rgba(0, 0, 0, 0.132), 0 1.2px 3.6px 0 rgba(0, 0, 0, 0.108);
    --fluent-shadow-xl: 0 25.6px 57.6px 0 rgba(0, 0, 0, 0.22), 0 4.8px 14.4px 0 rgba(0, 0, 0, 0.18);
    
    /* Typography */
    --fluent-font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
    --fluent-font-size-xs: 11px;
    --fluent-font-size-sm: 12px;
    --fluent-font-size-base: 14px;
    --fluent-font-size-lg: 16px;
    --fluent-font-size-xl: 18px;
    --fluent-font-size-2xl: 20px;
    --fluent-font-size-3xl: 24px;
    --fluent-font-size-4xl: 28px;
    --fluent-font-size-5xl: 32px;
    
    /* Transitions */
    --fluent-transition-fast: 0.1s cubic-bezier(0.1, 0.9, 0.2, 1);
    --fluent-transition-normal: 0.2s cubic-bezier(0.1, 0.9, 0.2, 1);
    --fluent-transition-slow: 0.3s cubic-bezier(0.1, 0.9, 0.2, 1);
    
    /* Z-Index Scale */
    --fluent-z-base: 0;
    --fluent-z-dropdown: 1000;
    --fluent-z-modal: 1050;
    --fluent-z-toast: 1100;
    --fluent-z-tooltip: 1200;
}

/* ========================================
   GLOBAL FLUENT STYLES
   ======================================== */

body {
    font-family: var(--fluent-font-family);
    font-size: var(--fluent-font-size-base);
    color: var(--fluent-gray-190);
    background: var(--fluent-gray-10);
}

/* ========================================
   FLUENT BUTTONS
   ======================================== */

.btn-fluent-primary {
    background: var(--fluent-navy-primary);
    color: white;
    border: 1px solid var(--fluent-navy-primary);
    border-radius: var(--fluent-radius-md);
    padding: 11px 20px;
    font-size: var(--fluent-font-size-base);
    font-weight: 600;
    transition: all var(--fluent-transition-fast);
    cursor: pointer;
}

.btn-fluent-primary:hover {
    background: var(--fluent-navy-secondary);
    border-color: var(--fluent-navy-secondary);
    box-shadow: var(--fluent-shadow-sm);
    transform: translateY(-1px);
}

.btn-fluent-primary:active {
    transform: scale(0.98);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-fluent-primary:focus {
    outline: 2px solid var(--fluent-navy-primary);
    outline-offset: 2px;
}

.btn-fluent-secondary {
    background: var(--fluent-white);
    color: var(--fluent-gray-190);
    border: 1px solid var(--fluent-gray-50);
    border-radius: var(--fluent-radius-md);
    padding: 11px 20px;
    font-size: var(--fluent-font-size-base);
    font-weight: 600;
    transition: all var(--fluent-transition-fast);
}

.btn-fluent-secondary:hover {
    background: var(--fluent-gray-20);
    border-color: var(--fluent-gray-90);
    box-shadow: var(--fluent-shadow-sm);
}

.btn-fluent-warning {
    background: var(--fluent-warning);
    color: var(--fluent-white);
    border: 1px solid var(--fluent-warning);
    border-radius: var(--fluent-radius-md);
    padding: 11px 20px;
    font-size: var(--fluent-font-size-base);
    font-weight: 600;
    transition: all var(--fluent-transition-fast);
}

.btn-fluent-warning:hover {
    background: var(--fluent-warning-hover);
    border-color: var(--fluent-warning-hover);
    box-shadow: var(--fluent-shadow-sm);
    color: var(--fluent-white);
}

.btn-fluent-warning:active {
    box-shadow: none;
    transform: translateY(1px);
}

.btn-fluent-warning:focus {
    outline: 2px solid var(--fluent-warning);
    outline-offset: 2px;
}

/* ========================================
   FLUENT INPUTS
   ======================================== */

.form-control-fluent {
    background: var(--fluent-white);
    border: 1px solid var(--fluent-gray-50);
    border-radius: var(--fluent-radius-sm);
    padding: 8px 12px;
    font-size: var(--fluent-font-size-base);
    color: var(--fluent-gray-190);
    transition: all var(--fluent-transition-fast);
}

.form-control-fluent:hover {
    border-color: var(--fluent-gray-90);
}

.form-control-fluent:focus {
    border-color: var(--fluent-navy-primary);
    box-shadow: 0 0 0 2px rgba(0, 31, 63, 0.2);
    outline: none;
}

.form-select-fluent {
    background: var(--fluent-white);
    border: 1px solid var(--fluent-gray-50);
    border-radius: var(--fluent-radius-sm);
    padding: 8px 12px;
    font-size: var(--fluent-font-size-base);
    color: var(--fluent-gray-190);
    transition: all var(--fluent-transition-fast);
}

.form-select-fluent:hover {
    border-color: var(--fluent-gray-90);
}

.form-select-fluent:focus {
    border-color: var(--fluent-navy-primary);
    box-shadow: 0 0 0 2px rgba(0, 31, 63, 0.2);
    outline: none;
}

/* ========================================
   FLUENT CARDS
   ======================================== */

.card-fluent {
    background: var(--fluent-white);
    border: 1px solid var(--fluent-gray-30);
    border-radius: var(--fluent-radius-md);
    box-shadow: var(--fluent-shadow-sm);
    transition: all var(--fluent-transition-normal);
}

.card-fluent:hover {
    box-shadow: var(--fluent-shadow-md);
    transform: translateY(-2px);
}

.card-fluent-header {
    padding: var(--fluent-space-lg);
    border-bottom: 1px solid var(--fluent-gray-30);
    font-weight: 600;
    font-size: var(--fluent-font-size-lg);
}

.card-fluent-body {
    padding: var(--fluent-space-lg);
}

/* ========================================
   FLUENT NAVIGATION
   ======================================== */

.sidebar-fluent {
    background: var(--fluent-navy-dark);
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    overflow-y: auto;
    box-shadow: var(--fluent-shadow-lg);
}

.sidebar-fluent .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    transition: all var(--fluent-transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-fluent .nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border-left-color: var(--fluent-navy-light);
}

.sidebar-fluent .nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: white;
}

/* Support existing sidebar-nav-item class */
.sidebar-fluent .sidebar-nav-item {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    transition: all var(--fluent-transition-fast);
    border-left: 3px solid transparent;
    text-decoration: none;
}

.sidebar-fluent .sidebar-nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border-left-color: var(--fluent-navy-light);
}

.sidebar-fluent .sidebar-nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: white;
}

/* Sidebar Brand Text Styling */
.sidebar-brand {
    text-decoration: none;
    display: block;
    text-align: center;
    padding: var(--fluent-space-2xl) var(--fluent-space-lg);
}

.brand-text-only {
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin: 0;
    letter-spacing: 2px;
}

.brand-subtitle {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

/* Sidebar Section Titles */
.sidebar-fluent .sidebar-section-title {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--fluent-font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--fluent-space-lg) var(--fluent-space-xl);
    margin-top: var(--fluent-space-lg);
}

/* ========================================
   FLUENT BADGES
   ======================================== */

.badge-fluent {
    padding: 4px 8px;
    border-radius: var(--fluent-radius-sm);
    font-size: var(--fluent-font-size-sm);
    font-weight: 600;
    display: inline-block;
}

.badge-fluent-success {
    background: var(--fluent-success);
    color: white;
}

.badge-fluent-warning {
    background: var(--fluent-warning);
    color: white;
}

.badge-fluent-danger {
    background: var(--fluent-danger);
    color: white;
}

.badge-fluent-info {
    background: var(--fluent-info);
    color: white;
}

/* ========================================
   FLUENT TABLES
   ======================================== */

.table-fluent {
    width: 100%;
    border-collapse: collapse;
}

.table-fluent thead {
    background: var(--fluent-gray-20);
    border-bottom: 2px solid var(--fluent-gray-50);
}

.table-fluent th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: var(--fluent-font-size-sm);
    color: var(--fluent-gray-130);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-fluent td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--fluent-gray-30);
}

.table-fluent tbody tr:hover {
    background: var(--fluent-gray-10);
}

/* ========================================
   FLUENT MODALS
   ======================================== */

.modal-fluent .modal-content {
    border: none;
    border-radius: var(--fluent-radius-lg);
    box-shadow: var(--fluent-shadow-xl);
}

.modal-fluent .modal-header {
    background: var(--fluent-gray-20);
    border-bottom: 1px solid var(--fluent-gray-30);
    padding: var(--fluent-space-xl);
}

.modal-fluent .modal-body {
    padding: var(--fluent-space-2xl);
}

.modal-fluent .modal-footer {
    background: var(--fluent-gray-10);
    border-top: 1px solid var(--fluent-gray-30);
    padding: var(--fluent-space-lg);
}

/* ========================================
   FLUENT ANIMATIONS
   ======================================== */

@keyframes fluent-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fluent-fade-in {
    animation: fluent-fade-in var(--fluent-transition-normal) ease-out;
}

/* ========================================
   FLUENT UTILITIES
   ======================================== */

.fluent-text-primary {
    color: var(--fluent-navy-primary);
}

.fluent-bg-primary {
    background: var(--fluent-navy-primary);
}

.fluent-text-muted {
    color: var(--fluent-gray-90);
}

.fluent-divider {
    height: 1px;
    background: var(--fluent-gray-30);
    border: none;
    margin: var(--fluent-space-lg) 0;
}

/* ========================================
   QUICK ACTIONS
   ======================================== */

.fluent-quick-action {
    background: var(--fluent-white);
    border: 1px solid var(--fluent-gray-30);
    border-radius: var(--fluent-radius-lg);
    transition: all var(--fluent-transition-normal);
    cursor: pointer;
    overflow: hidden;
}

.fluent-quick-action:hover {
    border-color: var(--fluent-navy-primary);
    box-shadow: var(--fluent-shadow-md);
    transform: translateY(-2px);
}

.fluent-quick-action-icon {
    transition: transform var(--fluent-transition-normal);
}

.fluent-quick-action:hover .fluent-quick-action-icon {
    transform: scale(1.1);
}

.fluent-quick-action h6 {
    font-weight: 600;
    font-size: var(--fluent-font-size-base);
    color: var(--fluent-navy-primary);
    margin-bottom: var(--fluent-space-xs);
}

.fluent-quick-action small {
    font-size: var(--fluent-font-size-xs);
    color: var(--fluent-gray-90);
}