/* ===================================
   FER AI Agents Dashboard - Stili CSS
   Design Corporate Professionale
   =================================== */

/* === VARIABILI CSS === */
:root {
    /* Colori Corporate FER */
    --color-green-primary: #10b981;
    --color-green-dark: #059669;
    --color-green-light: #34d399;
    --color-teal-primary: #14b8a6;
    --color-teal-dark: #0d9488;
    --color-blue-primary: #3b82f6;
    --color-blue-dark: #2563eb;
    --color-purple: #8b5cf6;
    
    /* Grigi Professionali */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Colori Base */
    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-border: #e5e7eb;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* 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);
    
    /* Transizioni */
    --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);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --color-background: #0f172a;
    --color-surface: #1e293b;
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-border: #334155;
    --color-shadow: rgba(0, 0, 0, 0.3);
    --color-gray-50: #1e293b;
    --color-gray-100: #334155;
    --color-gray-200: #475569;
    --color-gray-800: #cbd5e1;
    --color-gray-900: #f1f5f9;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--color-background);
    color: var(--color-text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

/* === CONTAINER === */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* === HEADER === */
.header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.brand-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.125rem;
}

.btn-icon:hover {
    background: var(--color-green-primary);
    color: white;
    border-color: var(--color-green-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, 
        rgba(16, 185, 129, 0.05) 0%, 
        rgba(20, 184, 166, 0.05) 50%,
        rgba(59, 130, 246, 0.05) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
}

.hero-content {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* === STATISTICHE === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.stat-card {
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

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

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.stat-icon.green {
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-green-dark));
}

.stat-icon.teal {
    background: linear-gradient(135deg, var(--color-teal-primary), var(--color-teal-dark));
}

.stat-icon.blue {
    background: linear-gradient(135deg, var(--color-blue-primary), var(--color-blue-dark));
}

.stat-icon.purple {
    background: linear-gradient(135deg, var(--color-purple), #7c3aed);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* === MAIN CONTENT === */
.main-content {
    padding: var(--spacing-2xl) 0;
    min-height: 60vh;
}

/* === CONTROLS === */
.controls-section {
    margin-bottom: var(--spacing-xl);
}

.search-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) 3rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-green-primary);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.search-clear {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-gray-200);
    border: none;
    border-radius: var(--radius-sm);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.search-clear:hover {
    background: var(--color-green-primary);
    color: white;
}

/* === FILTRI === */
.filters-container {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.filter-btn:hover {
    border-color: var(--color-green-primary);
    color: var(--color-green-primary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.filter-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.filter-btn.active .filter-count {
    background: rgba(255, 255, 255, 0.3);
}

/* === AGENTS GRID === */
.agents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    .agents-grid {
        grid-template-columns: 1fr;
    }
}

/* === AGENT CARD === */
.agent-card {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.agent-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-green-primary), var(--color-teal-primary));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.agent-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-green-primary);
}

.agent-card:hover::before {
    transform: scaleX(1);
}

.agent-card.favorite {
    border-color: var(--color-purple);
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.03) 0%, 
        rgba(139, 92, 246, 0.01) 100%);
}

.agent-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.agent-icon {
    font-size: 2.5rem;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
}

.agent-header-content {
    flex: 1;
}

.agent-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.agent-category {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.agent-category.due-diligence {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-green-dark);
}

.agent-category.investimenti {
    background: rgba(251, 191, 36, 0.1);
    color: #d97706;
}

.agent-category.analisi-tecnica {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-blue-dark);
}

.agent-category.portfolio-management {
    background: rgba(20, 184, 166, 0.1);
    color: var(--color-teal-dark);
}

.agent-category.web-development {
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-purple);
}

.agent-description {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.agent-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-favorite {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.125rem;
}

.btn-favorite:hover {
    border-color: var(--color-purple);
    color: var(--color-purple);
    transform: scale(1.1);
}

.btn-favorite.active {
    background: var(--color-purple);
    color: white;
    border-color: var(--color-purple);
}

.btn-access {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: none;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    color: white;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-md);
    font-family: var(--font-primary);
}

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

/* === EMPTY STATE === */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-xl);
    border-radius: 50%;
    background: linear-gradient(135deg, 
        rgba(16, 185, 129, 0.1), 
        rgba(20, 184, 166, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--color-green-primary);
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--radius-md);
    border: none;
    background: linear-gradient(135deg, var(--color-green-primary), var(--color-teal-primary));
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    font-family: var(--font-primary);
}

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

/* === FOOTER === */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

.shortcuts-list,
.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.shortcuts-list li,
.info-list li {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

kbd {
    background: var(--color-gray-100);
    border: 1px solid var(--color-border);
    border-radius: 0.25rem;
    padding: 0.125rem 0.5rem;
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--color-text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* === TOAST === */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    background: var(--color-gray-900);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transform: translateY(150%);
    transition: transform var(--transition-base);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.agent-card {
    animation: fadeInUp var(--transition-base) ease-out;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .brand-title {
        font-size: 1.25rem;
    }
    
    .brand-subtitle {
        font-size: 0.75rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-container {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        font-size: 0.8125rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}