/* 
   TIMELINE VERTICAL SVG - DISEÑO LIMPIO
   --------------------------------------
   Línea SVG animada con scroll
   Eventos verticales con fechas a la izquierda
*/

:root {
    --tl-bg: #ffffff;
    --tl-line: #e0e0e0;
    --tl-accent: #13216A;
    --tl-highlight: #E1211B;
    --tl-text: #13216A;
    --tl-text-muted: #666666;
    --tl-date: #999999;
}

/* ===========================================
   SECCIÓN PRINCIPAL
   =========================================== */
.timeline-vertical-section {
    background-color: #fff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.timeline-vertical-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* ===========================================
   TÍTULO DE SECCIÓN
   =========================================== */
.timeline-vertical-section .section-title {
    text-align: center;
    color: var(--tl-text);
    font-family: 'Inter', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
}

/* ===========================================
   CONTENEDOR DEL TIMELINE
   =========================================== */
.timeline-wrapper {
    position: relative;
    padding-left: 140px;
}

/* ===========================================
   LÍNEA SVG
   =========================================== */
.timeline-line-svg {
    position: absolute;
    left: 120px;
    top: 0;
    width: 4px;
    height: 100%;
    z-index: 1;
}

.timeline-line-bg {
    stroke: var(--tl-line);
    stroke-width: 2;
    fill: none;
}

.timeline-line-progress {
    stroke: var(--tl-accent);
    stroke-width: 2;
    fill: none;
    transition: none; /* Sync is better without transition for scroll-based animation */
}

/* ===========================================
   EVENTOS
   =========================================== */
.timeline-events {
    position: relative;
    z-index: 2;
}

.timeline-event {
    display: flex;
    align-items: flex-start;
    margin-bottom: 60px;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.timeline-event.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Fecha a la izquierda */
.timeline-date {
    position: absolute;
    left: -140px;
    width: 100px;
    text-align: right;
    font-family: 'Inter', monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--tl-date);
    padding-top: 4px;
    letter-spacing: 1px;
}

/* Punto en la línea */
.timeline-dot {
    position: absolute;
    left: -22px;
    top: 6px;
    width: 14px;
    height: 14px;
    background-color: #fff;
    border: 3px solid var(--tl-line);
    border-radius: 50%;
    z-index: 3;
    transition: all 0.3s ease;
}

.timeline-event.visible .timeline-dot {
    border-color: var(--tl-highlight);
    background-color: var(--tl-highlight);
    box-shadow: 0 0 0 4px rgba(225, 33, 27, 0.2);
}

/* Contenido */
.timeline-content {
    padding-left: 30px;
    flex: 1;
}

.timeline-title {
    font-family: 'Inter', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--tl-text);
    margin: 0 0 8px 0;
    line-height: 1.3;
}

.timeline-subtitle {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--tl-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* Emojis/iconos decorativos */
.timeline-emoji {
    display: inline-block;
    margin-left: 8px;
    font-size: 1rem;
}

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 768px) {
    .timeline-wrapper {
        padding-left: 50px;
    }
    
    .timeline-line-svg {
        left: 30px;
    }
    
    .timeline-date {
        position: relative;
        left: 0;
        width: auto;
        text-align: left;
        margin-bottom: 8px;
        font-size: 0.75rem;
    }
    
    .timeline-event {
        flex-direction: column;
        margin-bottom: 50px;
    }
    
    .timeline-dot {
        left: -32px;
    }
    
    .timeline-content {
        padding-left: 20px;
    }
    
    .timeline-title {
        font-size: 1.1rem;
    }
    
    .timeline-subtitle {
        font-size: 0.85rem;
    }
}

/* ===========================================
   ANIMACIONES ADICIONALES
   =========================================== */
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(74, 158, 255, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(74, 158, 255, 0.1); }
}

.timeline-event.visible .timeline-dot {
    animation: pulse 2s ease-in-out infinite;
}

/* Primer evento siempre visible al cargar */
.timeline-event:first-child {
    opacity: 1;
    transform: translateY(0);
}

.timeline-event:first-child .timeline-dot {
    border-color: var(--tl-highlight);
    background-color: var(--tl-highlight);
}