/* ========================================
   IMPACT ANALYTICS DESIGN SYSTEM
   Professional UI/UX Framework
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Brand Colors */
    --ia-primary: #0066FF;
    --ia-secondary: #00C9FF;
    --ia-accent: #6366F1;  /* Changed from orange to indigo */
    --ia-success: #00D084;
    --ia-warning: #FFB800;
    --ia-danger: #EF4444;
    --ia-gold: #FFD700;    /* For special highlights */
    --ia-dark: #0A1628;
    --ia-light: #F8FAFC;
    --ia-gray: #64748B;
    
    /* Gradients */
    --ia-gradient-primary: linear-gradient(135deg, #0066FF 0%, #00C9FF 100%);
    --ia-gradient-accent: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);  /* Changed to indigo/purple gradient */
    --ia-gradient-success: linear-gradient(135deg, #00D084 0%, #00C9FF 100%);
    --ia-gradient-completed: linear-gradient(135deg, #64748B 0%, #94A3B8 100%);  /* Completed status */
    --ia-gradient-dark: linear-gradient(135deg, #0A1628 0%, #1E3A5F 100%);
    
    /* Spacing Scale */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Typography */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 102, 255, 0.16);
    --shadow-xl: 0 24px 64px rgba(0, 102, 255, 0.20);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--ia-dark);
    background: var(--ia-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

/* ========================================
   COMPONENT LIBRARY
   ======================================== */

/* Cards */
.ia-card {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(0, 102, 255, 0.08);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
}

.ia-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 102, 255, 0.06), transparent);
    transition: left var(--transition-slow);
}

.ia-card:hover::before {
    left: 100%;
}

.ia-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--ia-primary);
}

.ia-card-header {
    background: var(--ia-gradient-primary);
    color: white;
    padding: var(--space-lg);
    font-weight: 600;
}

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

.ia-card-footer {
    padding: var(--space-lg);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Buttons */
.ia-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    font-weight: 600;
    font-size: var(--text-base);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    white-space: nowrap;
}

.ia-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: 0;
}

.ia-btn:hover::before {
    width: 300px;
    height: 300px;
}

.ia-btn:active {
    transform: scale(0.97);
}

.ia-btn > * {
    position: relative;
    z-index: 1;
}

/* Button Variants */
.ia-btn-primary {
    background: var(--ia-gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 102, 255, 0.3);
}

.ia-btn-primary:hover {
    box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
    transform: translateY(-2px);
}

.ia-btn-success {
    background: var(--ia-gradient-success);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 208, 132, 0.3);
}

.ia-btn-success:hover {
    box-shadow: 0 6px 20px rgba(0, 208, 132, 0.4);
    transform: translateY(-2px);
}

.ia-btn-accent {
    background: var(--ia-gradient-accent);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);  /* Updated to indigo shadow */
}

.ia-btn-danger {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.ia-btn-outline {
    background: transparent;
    border: 2px solid var(--ia-primary);
    color: var(--ia-primary);
}

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

/* Button Sizes */
.ia-btn-sm {
    padding: 8px 16px;
    font-size: var(--text-sm);
}

.ia-btn-lg {
    padding: 16px 32px;
    font-size: var(--text-lg);
}

.ia-btn-xl {
    padding: 20px 40px;
    font-size: var(--text-xl);
}

/* Forms */
.ia-form-group {
    margin-bottom: var(--space-lg);
}

.ia-form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--ia-dark);
    font-size: var(--text-sm);
}

.ia-form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--text-base);
    border: 2px solid rgba(0, 102, 255, 0.15);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-family: var(--font-body);
}

.ia-form-control:focus {
    outline: none;
    border-color: var(--ia-primary);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.ia-form-control::placeholder {
    color: var(--ia-gray);
    opacity: 0.6;
}

/* Badges */
.ia-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--text-sm);
    box-shadow: var(--shadow-sm);
}

.ia-badge-primary {
    background: var(--ia-gradient-primary);
    color: white;
}

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

.ia-badge-accent {
    background: var(--ia-gradient-accent);
    color: white;
}

/* Alerts */
.ia-alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid;
    margin-bottom: var(--space-md);
}

.ia-alert-success {
    background: rgba(0, 208, 132, 0.1);
    border-color: var(--ia-success);
    color: #047857;
}

.ia-alert-info {
    background: rgba(0, 102, 255, 0.1);
    border-color: var(--ia-primary);
    color: #1d4ed8;
}

.ia-alert-warning {
    background: rgba(255, 184, 0, 0.1);
    border-color: var(--ia-warning);
    color: #b45309;
}

.ia-alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--ia-danger);
    color: #dc2626;
}

/* Tables */
.ia-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.ia-table thead {
    background: var(--ia-gradient-dark);
    color: white;
}

.ia-table th {
    padding: var(--space-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ia-table td {
    padding: var(--space-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.ia-table tbody tr {
    background: white;
    transition: all var(--transition-fast);
}

.ia-table tbody tr:hover {
    background: rgba(0, 102, 255, 0.03);
    transform: scale(1.01);
}

/* Stats Card */
.ia-stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 102, 255, 0.08);
    transition: all var(--transition-base);
}

.ia-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.ia-stat-label {
    color: var(--ia-gray);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.ia-stat-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    background: var(--ia-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Gradient Header */
.ia-gradient-header {
    background: var(--ia-gradient-primary);
    color: white;
    padding: var(--space-2xl) var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--space-xl);
}

.ia-gradient-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

/* Loading Spinner */
.ia-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 102, 255, 0.1);
    border-top-color: var(--ia-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* Responsive */
@media (max-width: 768px) {
    :root {
        --text-3xl: 1.75rem;
        --text-4xl: 2rem;
    }
    
    .ia-card-body,
    .ia-card-header,
    .ia-card-footer {
        padding: var(--space-md);
    }
    
    .ia-gradient-header {
        padding: var(--space-xl) var(--space-md);
    }
}