/* 
 * Pharmaceutical Executive Design System
 * Professional grade interface for Brains Bioceutical Corp
 */

/* Typography & Brand Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    /* Brand Colors - Pharmaceutical Grade */
    --primary-green: #0d4f3c;
    --primary-green-light: #1a6b4f;
    --primary-green-dark: #0a3d2f;
    --accent-gold: #c9a96e;
    --accent-gold-light: #d4b87d;
    --accent-gold-dark: #b8955e;
    
    /* Neutral Palette */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Status Colors */
    --success: #059669;
    --warning: #d97706;
    --error: #dc2626;
    --info: #0284c7;
    
    /* Pharmaceutical Specific */
    --clinical-blue: #1e40af;
    --research-purple: #7c3aed;
    --data-teal: #0d9488;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--gray-700);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation - Executive Style */
.navbar {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md) 0;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--white) !important;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.navbar-brand i {
    font-size: 1.75rem;
    color: var(--accent-gold);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: var(--space-sm) var(--space-lg) !important;
    margin: 0 var(--space-xs);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white) !important;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--accent-gold);
    border-radius: 1px;
}

/* Card System - Pharmaceutical Grade */
.executive-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

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

.executive-card-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-lg) var(--space-xl);
    position: relative;
}

.executive-card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-xl);
    right: var(--space-xl);
    height: 2px;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--accent-gold) 100%);
}

.executive-card-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--primary-green);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.executive-card-body {
    padding: var(--space-xl);
}

/* Metric Cards - Dashboard */
.metric-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green) 0%, var(--accent-gold) 100%);
}

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

.metric-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.metric-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-icon {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

/* Buttons - Pharmaceutical Grade */
.btn-executive {
    font-family: var(--font-primary);
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: 0.875rem;
}

.btn-executive-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-executive-primary:hover {
    background: linear-gradient(135deg, var(--primary-green-dark) 0%, var(--primary-green) 100%);
    box-shadow: var(--shadow-md);
    color: var(--white);
    transform: translateY(-1px);
}

.btn-executive-secondary {
    background: var(--white);
    color: var(--primary-green);
    border: 2px solid var(--primary-green);
}

.btn-executive-secondary:hover {
    background: var(--primary-green);
    color: var(--white);
    transform: translateY(-1px);
}

.btn-executive-accent {
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-executive-accent:hover {
    background: linear-gradient(135deg, var(--accent-gold-dark) 0%, var(--accent-gold) 100%);
    box-shadow: var(--shadow-md);
    color: var(--white);
    transform: translateY(-1px);
}

/* Form Controls - Professional */
.form-control-executive {
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-control-executive:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(13, 79, 60, 0.1);
    outline: none;
}

.form-label-executive {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
}

/* Research Cards */
.research-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: all 0.3s ease;
    margin-bottom: var(--space-lg);
}

.research-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.research-card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}

.research-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-green);
    margin: 0 0 var(--space-sm) 0;
    line-height: 1.4;
}

.research-meta {
    display: flex;
    gap: var(--space-lg);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-bottom: var(--space-sm);
}

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

.research-abstract {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-600);
    margin-bottom: var(--space-md);
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.research-tag {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    color: var(--white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.research-tag.condition {
    background: linear-gradient(135deg, var(--clinical-blue) 0%, #3b82f6 100%);
}

.research-tag.compound {
    background: linear-gradient(135deg, var(--research-purple) 0%, #8b5cf6 100%);
}

.research-tag.phase {
    background: linear-gradient(135deg, var(--data-teal) 0%, #14b8a6 100%);
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.status-indicator.active {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success);
}

.status-indicator.completed {
    background: rgba(59, 130, 246, 0.1);
    color: var(--clinical-blue);
}

.status-indicator.recruiting {
    background: rgba(217, 119, 6, 0.1);
    color: var(--warning);
}

/* User Menu & Dropdown */
.navbar .dropdown-menu {
    background-color: #2c3e50 !important;
    border: 1px solid #34495e !important;
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    min-width: 180px;
    margin-top: 0.5rem;
}

.navbar .dropdown-item {
    color: #ffffff !important;
    padding: 0.75rem 1rem;
    font-weight: 500;
    border-radius: 4px;
    margin: 0.25rem 0.5rem;
    transition: background-color 0.2s ease;
}

.navbar .dropdown-item:hover {
    background-color: rgba(255,255,255,0.1) !important;
    color: #ffffff !important;
}

.navbar .dropdown-item[href*="logout"]:hover {
    background-color: rgba(231, 76, 60, 0.1) !important;
    color: #e74c3c !important;
}

.navbar .dropdown-divider {
    border-color: #34495e !important;
    margin: 0.5rem 0;
}

.nav-link.dropdown-toggle::after {
    margin-left: 0.5rem;
}

/* Dashboard Specific */
.dashboard-header {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    color: var(--white);
    padding: var(--space-2xl) 0;
    margin-bottom: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.dashboard-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    background-size: 50px 50px;
}

.dashboard-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    position: relative;
    z-index: 1;
}

.dashboard-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-top: var(--space-sm);
    position: relative;
    z-index: 1;
}

/* Search Interface */
.search-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.search-input {
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    width: 100%;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 4px rgba(13, 79, 60, 0.1);
    outline: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .dashboard-title {
        font-size: 2rem;
    }
    
    .metric-card {
        padding: var(--space-lg);
    }
    
    .metric-value {
        font-size: 2rem;
    }
    
    .executive-card-body {
        padding: var(--space-lg);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading States */
.loading-shimmer {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .btn-executive,
    .search-container {
        display: none !important;
    }
    
    .executive-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}