/**
 * BTR Process Info Box - IMPROVED VERSION v2.0
 * Design migliorato per maggiore chiarezza e impatto visivo
 * 
 * Migliorie:
 * - Timeline orizzontale più efficiente
 * - Gerarchia visiva migliorata
 * - Micro-interazioni più sofisticate
 * - Contenuti più informativi
 * - Design più moderno e pulito
 */

/* ========================================
   CSS Variables (BTR Style Guide)
   ======================================== */
:root {
    --btr-primary: #0097c5;
    --btr-primary-dark: #006a8e;
    --btr-primary-light: #E3F2FF;
    --btr-primary-glow: rgba(0, 151, 197, 0.15);
    --btr-success: #22C55E;
    --btr-warning: #F59E0B;
    --btr-info: #3b82f6;
    --btr-info-light: #dbeafe;
    --btr-gray-900: #0F172A;
    --btr-gray-800: #1e293b;
    --btr-gray-700: #334155;
    --btr-gray-600: #475569;
    --btr-gray-500: #64748B;
    --btr-gray-400: #94a3b8;
    --btr-gray-300: #cbd5e1;
    --btr-gray-200: #E2E8F0;
    --btr-gray-100: #F1F5F9;
    --btr-gray-50: #F8FAFC;
    --btr-white: #FFFFFF;
    --btr-font-sans: 'Archivo', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ========================================
   Container Card - Migliorato
   ======================================== */
.btr-process-info-card-v2 {
    background: linear-gradient(135deg, var(--btr-white) 0%, var(--btr-gray-50) 100%);
    border-radius: 24px;
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: 
        0 1px 3px rgba(15, 23, 42, 0.06),
        0 20px 40px rgba(15, 23, 42, 0.08);
    padding: 2.5rem;
    margin: 2.5rem 0;
    font-family: var(--btr-font-sans);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Decorazione angolo */
.btr-process-info-card-v2::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle at top right, var(--btr-primary-glow), transparent 70%);
    opacity: 0.5;
    transition: opacity 0.4s ease;
}

.btr-process-info-card-v2:hover::before {
    opacity: 0.7;
}

.btr-process-info-card-v2:hover {
    box-shadow: 
        0 1px 3px rgba(15, 23, 42, 0.08),
        0 24px 48px rgba(15, 23, 42, 0.12),
        0 0 0 1px rgba(0, 151, 197, 0.05);
    transform: translateY(-3px);
}

/* ========================================
   Header - Più compatto e chiaro
   ======================================== */
.btr-process-header-v2 {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.btr-hero-badge-v2 {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--btr-primary), var(--btr-primary-dark));
    color: var(--btr-white);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
    box-shadow: 0 4px 12px rgba(0, 151, 197, 0.25);
    transition: all 0.3s ease;
}

.btr-hero-badge-v2:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 151, 197, 0.35);
}

/* Icona nel badge */
.btr-badge-icon-v2 {
    width: 16px;
    height: 16px;
    stroke-width: 2.5;
}

.btr-process-header-v2 h3 {
    margin: 0 0 0.75rem 0;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--btr-gray-900);
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.btr-process-subtitle-v2 {
    margin: 0;
    font-size: 1rem;
    color: var(--btr-gray-600);
    font-weight: 400;
    line-height: 1.5;
}

/* ========================================
   Timeline Container - Nuovo layout
   ======================================== */
.btr-process-timeline-v2 {
    position: relative;
    margin-bottom: 2.5rem;
}

/* Linea di connessione centrale */
.btr-timeline-line {
    position: absolute;
    top: 60px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--btr-gray-200) 15%, 
        var(--btr-gray-200) 85%, 
        transparent 100%
    );
    z-index: 0;
}

/* Linea di progresso animata */
.btr-timeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--btr-primary), var(--btr-primary-dark));
    border-radius: 3px;
    box-shadow: 0 0 10px var(--btr-primary-glow);
    animation: progressLine 3s ease-in-out infinite;
}

@keyframes progressLine {
    0%, 100% { width: 0%; }
    50% { width: 100%; }
}

/* Grid degli step */
.btr-process-steps-v2 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

/* ========================================
   Single Step - Design migliorato
   ======================================== */
.btr-step-v2 {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Contenitore icona circolare */
.btr-step-circle-v2 {
    position: relative;
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Cerchio esterno (ring decorativo) */
.btr-step-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--btr-primary-light), var(--btr-gray-100));
    opacity: 0;
    transition: all 0.4s ease;
}

.btr-step-v2:hover .btr-step-ring {
    opacity: 1;
    transform: scale(1.1);
}

/* Cerchio principale */
.btr-step-icon-wrapper-v2 {
    position: relative;
    width: 120px;
    height: 120px;
    background: var(--btr-white);
    border: 3px solid var(--btr-gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 4px 12px rgba(15, 23, 42, 0.06),
        inset 0 1px 2px rgba(255, 255, 255, 0.8);
}

.btr-step-v2:hover .btr-step-icon-wrapper-v2 {
    background: linear-gradient(135deg, var(--btr-white), var(--btr-gray-50));
    border-color: var(--btr-primary);
    box-shadow: 
        0 8px 24px rgba(0, 151, 197, 0.15),
        inset 0 1px 2px rgba(255, 255, 255, 0.8);
    transform: translateY(-4px);
}

/* Icona SVG */
.btr-step-icon-v2 {
    width: 48px;
    height: 48px;
    color: var(--btr-primary);
    stroke-width: 1.5;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 151, 197, 0.2));
}

.btr-step-v2:hover .btr-step-icon-v2 {
    color: var(--btr-primary-dark);
    transform: scale(1.1);
}

/* Numero step (badge superiore) */
.btr-step-number-v2 {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--btr-primary), var(--btr-primary-dark));
    border: 3px solid var(--btr-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--btr-white);
    letter-spacing: 0.02em;
    box-shadow: 0 4px 12px rgba(0, 151, 197, 0.3);
    transition: all 0.3s ease;
    z-index: 2;
}

.btr-step-v2:hover .btr-step-number-v2 {
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 6px 16px rgba(0, 151, 197, 0.4);
}

/* Contenuto step */
.btr-step-content-v2 {
    max-width: 280px;
}

.btr-step-title-v2 {
    margin: 0 0 0.75rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--btr-gray-900);
    letter-spacing: -0.015em;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.btr-step-v2:hover .btr-step-title-v2 {
    color: var(--btr-primary);
}

.btr-step-description-v2 {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--btr-gray-600);
    line-height: 1.6;
}

/* ========================================
   Info Notice - Design discreto e meno evidente
   ======================================== */
.btr-process-notice-v2 {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: #f8f9fa;
    border: 1px solid #e5e7eb;
    border-left: 2px solid #9ca3af;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

/* Decorazione sfondo - molto più tenue */
.btr-process-notice-v2::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(156, 163, 175, 0.03), transparent 70%);
    border-radius: 50%;
}

.btr-notice-icon-v2 {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: #6b7280;
    margin-top: 2px;
    position: relative;
    z-index: 1;
}

.btr-notice-text-v2 {
    flex: 1;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: #4b5563;
    position: relative;
    z-index: 1;
}

.btr-notice-text-v2 strong {
    display: inline;
    font-weight: 600;
    color: var(--btr-gray-900);
    margin-right: 0.25rem;
}

/* ========================================
   CTA Button (opzionale)
   ======================================== */
.btr-process-cta-v2 {
    text-align: center;
    margin-top: 2rem;
}

.btr-cta-button-v2 {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--btr-primary), var(--btr-primary-dark));
    color: var(--btr-white);
    font-size: 1.0625rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 
        0 4px 12px rgba(0, 151, 197, 0.25),
        inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.btr-cta-button-v2:hover {
    background: linear-gradient(135deg, var(--btr-primary-dark), #004d66);
    transform: translateY(-2px);
    box-shadow: 
        0 6px 20px rgba(0, 151, 197, 0.35),
        inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.btr-cta-button-v2:active {
    transform: translateY(0);
}

.btr-cta-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 992px) {
    .btr-process-info-card-v2 {
        padding: 2rem;
        margin: 2rem 0;
    }
    
    .btr-process-header-v2 h3 {
        font-size: 1.5rem;
    }
    
    .btr-process-steps-v2 {
        gap: 1.5rem;
    }
    
    .btr-step-circle-v2,
    .btr-step-icon-wrapper-v2 {
        width: 100px;
        height: 100px;
    }
    
    .btr-step-icon-v2 {
        width: 40px;
        height: 40px;
    }
    
    .btr-step-number-v2 {
        width: 32px;
        height: 32px;
        font-size: 0.8125rem;
    }
    
    .btr-step-title-v2 {
        font-size: 1.0625rem;
    }
    
    .btr-step-description-v2 {
        font-size: 0.875rem;
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 768px) {
    .btr-process-info-card-v2 {
        padding: 1.75rem;
        margin: 1.5rem 0;
        border-radius: 20px;
    }
    
    .btr-process-header-v2 {
        margin-bottom: 2rem;
    }
    
    .btr-process-header-v2 h3 {
        font-size: 1.375rem;
    }
    
    .btr-process-subtitle-v2 {
        font-size: 0.9375rem;
    }
    
    /* Layout verticale su mobile */
    .btr-process-steps-v2 {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    /* Nascondi linea timeline su mobile */
    .btr-timeline-line {
        display: none;
    }
    
    /* Linea verticale alternativa */
    .btr-process-timeline-v2::before {
        content: '';
        position: absolute;
        left: 60px;
        top: 60px;
        bottom: 60px;
        width: 2px;
        background: linear-gradient(180deg, 
            transparent 0%, 
            var(--btr-gray-200) 10%, 
            var(--btr-gray-200) 90%, 
            transparent 100%
        );
        z-index: 0;
    }
    
    .btr-step-v2 {
        flex-direction: row;
        text-align: left;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .btr-step-circle-v2 {
        flex-shrink: 0;
        margin-bottom: 0;
    }
    
    .btr-step-content-v2 {
        flex: 1;
        max-width: none;
        padding-top: 1rem;
    }
    
    .btr-process-notice-v2 {
        padding: 0.875rem 1rem;
        gap: 0.625rem;
    }
    
    .btr-notice-icon-v2 {
        width: 16px;
        height: 16px;
    }
    
    .btr-notice-text-v2 {
        font-size: 0.75rem;
    }
    
    .btr-cta-button-v2 {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ========================================
   Responsive - Small Mobile
   ======================================== */
@media (max-width: 480px) {
    .btr-process-info-card-v2 {
        padding: 1.5rem;
        margin: 1.25rem 0;
    }
    
    .btr-hero-badge-v2 {
        font-size: 0.75rem;
        padding: 0.4rem 0.85rem;
    }
    
    .btr-process-header-v2 h3 {
        font-size: 1.25rem;
    }
    
    .btr-step-circle-v2,
    .btr-step-icon-wrapper-v2 {
        width: 80px;
        height: 80px;
    }
    
    .btr-step-icon-v2 {
        width: 36px;
        height: 36px;
    }
    
    .btr-step-number-v2 {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
        top: -4px;
        right: -4px;
        border-width: 2px;
    }
    
    .btr-step-title-v2 {
        font-size: 1rem;
    }
    
    .btr-step-description-v2 {
        font-size: 0.8125rem;
    }
    
    .btr-process-timeline-v2::before {
        left: 40px;
    }
}

/* ========================================
   Accessibility
   ======================================== */
.btr-process-info-card-v2:focus-within {
    outline: 3px solid var(--btr-primary);
    outline-offset: 4px;
}

/* Focus per step interattivi */
.btr-step-v2[tabindex]:focus {
    outline: 2px solid var(--btr-primary);
    outline-offset: 4px;
    border-radius: 12px;
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .btr-process-info-card-v2,
    .btr-step-v2,
    .btr-step-icon-wrapper-v2,
    .btr-step-number-v2,
    .btr-hero-badge-v2,
    .btr-cta-button-v2,
    .btr-step-ring {
        transition: none;
        animation: none;
    }
    
    .btr-process-info-card-v2:hover,
    .btr-step-v2:hover .btr-step-icon-wrapper-v2,
    .btr-step-v2:hover .btr-step-number-v2,
    .btr-hero-badge-v2:hover,
    .btr-cta-button-v2:hover {
        transform: none;
    }
    
    .btr-timeline-progress {
        animation: none;
    }
}

/* ========================================
   High Contrast Mode
   ======================================== */
@media (prefers-contrast: high) {
    .btr-process-info-card-v2 {
        border: 2px solid var(--btr-gray-900);
    }
    
    .btr-step-icon-wrapper-v2 {
        border: 3px solid var(--btr-gray-900);
    }
    
    .btr-process-notice-v2 {
        border: 2px solid var(--btr-info);
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .btr-process-info-card-v2 {
        background: var(--btr-white);
        border: 1px solid var(--btr-gray-300);
        box-shadow: none;
        page-break-inside: avoid;
    }
    
    .btr-process-info-card-v2::before,
    .btr-process-notice-v2::before {
        display: none;
    }
    
    .btr-step-ring {
        display: none;
    }
    
    .btr-timeline-progress {
        animation: none;
        display: none;
    }
    
    .btr-cta-button-v2 {
        display: none;
    }
}

/* ========================================
   Animation on Load
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btr-process-info-card-v2 {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Stagger animation per gli step */
.btr-step-v2:nth-child(1) {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) 0.1s backwards;
}

.btr-step-v2:nth-child(2) {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) 0.2s backwards;
}

.btr-step-v2:nth-child(3) {
    animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) 0.3s backwards;
}

@media (prefers-reduced-motion: reduce) {
    .btr-process-info-card-v2,
    .btr-step-v2 {
        animation: none;
    }
}