* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #1a0033 0%, #330066 50%, #8000b3 100%);
    background-attachment: fixed;
    min-height: 100vh;
    color: white;
    overflow: hidden;
    position: relative;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

/* Efecto de estrellas en el fondo */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #fff, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #fff, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    z-index: -1;
    animation: twinkle 4s infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.timeline-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
}

/* Header con navegación - FIJO */
.timeline-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 0, 51, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 100;
    padding: 20px;
    text-align: center;
}

.year-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    width: 100%;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.3s ease;
    min-width: 50px;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.years-container {
    flex: 1;
    display: flex;
    justify-content: center;
}

.years {
    display: flex;
    gap: 20px;
    font-size: 16px;
    justify-content: center;
    flex-wrap: wrap;
    align-items: center;
}

.years span {
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.years span:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Timeline principal - SCROLLABLE */
.timeline-main {
    flex: 1;
    position: relative;
    margin-top: 140px; /* Espacio para header fijo */
    margin-bottom: 120px; /* Espacio para footer fijo */
    overflow-x: auto;
    overflow-y: hidden;
    cursor: grab;
}

.timeline-main:active {
    cursor: grabbing;
}

.timeline-content {
    width: 400vw; /* Ancho extendido para acomodar 28 cards */
    min-width: 2800px;
    height: 100%;
    position: relative;
}

.timeline-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 200px;
    transform: translateY(-50%);
    z-index: 1;
}

.timeline-svg {
    width: 100%;
    height: 200px;
}



/* Cards de eventos */
.events-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.event-card {
    position: absolute;
    width: 280px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.4s ease;
    backdrop-filter: blur(15px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 2;
}

/* Posicionamiento específico de cada card - ORDEN CRONOLÓGICO */
/* 2018 Events - Marzo, Junio, Septiembre, Noviembre */
.event-card[data-event="1"] { /* Marzo 2018 */
    left: calc(5% - 140px);
    top: 60%;
}

.event-card[data-event="2"] { /* Junio 2018 */
    left: calc(10% - 140px);
    top: 10%;
}

.event-card[data-event="3"] { /* Septiembre 2018 */
    left: calc(15% - 140px);
    top: 65%;
}

.event-card[data-event="4"] { /* Noviembre 2018 */
    left: calc(20% - 140px);
    top: 15%;
}

/* 2019 Events - Febrero, Mayo, Agosto, Octubre */
.event-card[data-event="5"] { /* Febrero 2019 */
    left: calc(25% - 140px);
    top: 60%;
}

.event-card[data-event="6"] { /* Mayo 2019 */
    left: calc(30% - 140px);
    top: 10%;
}

.event-card[data-event="7"] { /* Agosto 2019 */
    left: calc(35% - 140px);
    top: 65%;
}

.event-card[data-event="8"] { /* Octubre 2019 */
    left: calc(40% - 140px);
    top: 15%;
}

/* 2020 Events - Enero, Abril, Julio, Noviembre */
.event-card[data-event="9"] { /* Enero 2020 */
    left: calc(45% - 140px);
    top: 60%;
}

.event-card[data-event="10"] { /* Abril 2020 */
    left: calc(50% - 140px);
    top: 10%;
}

.event-card[data-event="11"] { /* Julio 2020 */
    left: calc(55% - 140px);
    top: 65%;
}

.event-card[data-event="12"] { /* Noviembre 2020 */
    left: calc(60% - 140px);
    top: 15%;
}

/* 2021 Events - Febrero, Mayo, Agosto, Noviembre */
.event-card[data-event="13"] { /* Febrero 2021 */
    left: calc(65% - 140px);
    top: 60%;
}

.event-card[data-event="14"] { /* Mayo 2021 */
    left: calc(70% - 140px);
    top: 10%;
}

.event-card[data-event="15"] { /* Agosto 2021 */
    left: calc(75% - 140px);
    top: 65%;
}

.event-card[data-event="16"] { /* Noviembre 2021 */
    left: calc(80% - 140px);
    top: 15%;
}

/* 2022 Events - Enero, Abril, Julio, Octubre */
.event-card[data-event="17"] { /* Enero 2022 */
    left: calc(85% - 140px);
    top: 60%;
}

.event-card[data-event="18"] { /* Abril 2022 */
    left: calc(90% - 140px);
    top: 10%;
}

.event-card[data-event="19"] { /* Julio 2022 */
    left: calc(95% - 140px);
    top: 65%;
}

.event-card[data-event="20"] { /* Octubre 2022 */
    left: calc(100% - 140px);
    top: 15%;
}

/* 2023 Events - Febrero, Mayo, Agosto, Noviembre */
.event-card[data-event="21"] { /* Febrero 2023 */
    left: calc(105% - 140px);
    top: 60%;
}

.event-card[data-event="22"] { /* Mayo 2023 */
    left: calc(110% - 140px);
    top: 10%;
}

.event-card[data-event="23"] { /* Agosto 2023 */
    left: calc(115% - 140px);
    top: 65%;
}

.event-card[data-event="24"] { /* Noviembre 2023 */
    left: calc(120% - 140px);
    top: 15%;
}

/* 2024 Events - Enero, Abril, Julio, Octubre */
.event-card[data-event="25"] { /* Enero 2024 */
    left: calc(125% - 140px);
    top: 60%;
}

.event-card[data-event="26"] { /* Abril 2024 */
    left: calc(130% - 140px);
    top: 10%;
}

.event-card[data-event="27"] { /* Julio 2024 */
    left: calc(135% - 140px);
    top: 65%;
}

.event-card[data-event="28"] { /* Octubre 2024 */
    left: calc(140% - 140px);
    top: 15%;
}

.event-card:hover {
    transform: scale(1.05) translateY(-10px);
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 15px 40px rgba(255, 255, 255, 0.3);
}

.event-date {
    background: rgba(255, 255, 255, 0.3);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 15px;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.event-card h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    line-height: 1.3;
}

.event-card p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    margin-bottom: 15px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.placeholder-image {
    width: 100%;
    height: 100px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

/* Navegación inferior - FIJA */
.bottom-navigation {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(26, 0, 51, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 100;
    padding: 20px;
    text-align: center;
}

.current-year-display {
    text-align: center;
    margin-bottom: 15px;
}

#currentYearLabel {
    font-size: 24px;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.bottom-months {
    display: flex;
    justify-content: center;
    gap: 15px;
    font-size: 14px;
    flex-wrap: wrap;
    width: 100%;
    padding: 0 20px;
}

.bottom-months span {
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 40px;
    text-align: center;
    font-weight: 500;
}

.bottom-months span:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(255, 255, 255, 0.2);
}

.bottom-months span.active {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: linear-gradient(135deg, #1a0033, #330066);
    margin: 5% auto;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    width: 80%;
    max-width: 600px;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 15px;
}

.close:hover {
    color: white;
}

/* Scrollbar personalizada para timeline */
.timeline-main::-webkit-scrollbar {
    height: 8px;
}

.timeline-main::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.timeline-main::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.timeline-main::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Indicador de scroll horizontal */
.scroll-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    padding: 10px;
    border-radius: 5px;
    font-size: 12px;
    z-index: 1000;
}

/* Responsive */
@media (max-width: 1200px) {
    .timeline-content {
        width: 500vw;
        min-width: 2200px;
    }

    .event-card {
        width: 220px;
        padding: 12px;
    }
}

@media (max-width: 768px) {
    .timeline-content {
        width: 600vw;
        min-width: 1800px;
        padding: 10px;
    }

    .months-container {
        flex-direction: column;
        gap: 20px;
    }

    .event-card {
        width: 200px;
        padding: 10px;
        font-size: 14px;
    }

    .event-card h4 {
        font-size: 14px;
    }

    .event-card p {
        font-size: 11px;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
}