/* Base Styles */
body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-color: #000000;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
    overflow-x: hidden;
    overflow-y: scroll;
}

/* Home Button - Matches Navigation Bar EXACTLY */
#home-button-container {
    position: fixed;
    top: 20px;
    right: 50%;
    margin-right: 360px;
    z-index: 1000;
    pointer-events: auto;
}

#home-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 40px;
    gap: 40px;
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: brightness(0.9) blur(20px) url(#liquidGlassFilter);
    -webkit-backdrop-filter: brightness(0.9) blur(20px) url(#liquidGlassFilter);
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: inset 6px 6px 0px -6px rgba(255, 255, 255, 0.4),
                inset 0 0 8px 1px rgba(255, 255, 255, 0.3),
                0 8px 32px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: visible;
    text-decoration: none;
    outline: none;
}

#home-button:visited,
#home-button:active,
#home-button:focus {
    text-decoration: none;
    outline: none;
}

#home-button span {
    color: rgba(255, 255, 255, 1.0);
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2px;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    text-transform: uppercase;
    white-space: nowrap;
    position: relative;
    display: inline-block;
    transform: scale(1);
    transform-origin: center center;
    transition: transform 0.3s ease-out;
}

#home-button:hover span {
    transform: scale(1.07);
}

/* Navigation Bar - EXACT same as MainBrain */
#brain-navigation-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    pointer-events: auto;
}

#brain-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 40px;
    gap: 40px;
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: brightness(0.9) blur(20px) url(#liquidGlassFilter);
    -webkit-backdrop-filter: brightness(0.9) blur(20px) url(#liquidGlassFilter);
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: inset 6px 6px 0px -6px rgba(255, 255, 255, 0.4),
                inset 0 0 8px 1px rgba(255, 255, 255, 0.3),
                0 8px 32px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: visible;
}

#brain-navigation a {
    color: rgba(255, 255, 255, 1.0);
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 2px;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    text-transform: uppercase;
    white-space: nowrap;
    position: relative;
    display: inline-block;
    transform: scale(1);
    transform-origin: center center;
    transition: transform 0.3s ease-out;
}

#brain-navigation a:hover {
    transform: scale(1.07);
}

#brain-navigation a.active {
    color: rgba(255, 255, 255, 1.0);
}

/* Main Container */
.about-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 100px 40px 60px 40px;
}

/* Hero Image */
.hero-image-container {
    width: 100%;
    max-width: 900px; /* Adjust this value to change image size */
    margin: 0 auto 60px auto;
    overflow: hidden;
    border-radius: 16px;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
}

/* Introduction Section */
.intro-section {
    max-width: 900px;
    margin: 0 auto 60px auto;
    padding: 0 20px;
}

#intro-content p {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 28px 0;
    text-align: left;
    display: block;
}

#intro-content p:last-child {
    margin-bottom: 0;
}

/* Timeline Section */
.timeline-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.timeline-headers {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    padding: 0 50px;
}

.timeline-label {
    flex: 1;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: rgba(255, 255, 255, 0.9);
}

.timeline-label.left {
    text-align: right;
    padding-right: 80px;
}

.timeline-label.right {
    text-align: left;
    padding-left: 80px;
}

/* Timeline Container */
.timeline {
    position: relative;
    padding: 40px 0 60px 0;
}

/* Timeline Center Line - Brighter Glowing White with Particles */
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, 
        rgba(255, 255, 255, 0.3) 0%, 
        rgba(255, 255, 255, 0.95) 50%, 
        rgba(255, 255, 255, 0.3) 100%);
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                0 0 20px rgba(255, 255, 255, 0.3),
                0 0 30px rgba(255, 255, 255, 0.15);
    filter: blur(0.5px);
    animation: timeline-glow 8s ease-in-out infinite;
}

@keyframes timeline-glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                    0 0 20px rgba(255, 255, 255, 0.3),
                    0 0 30px rgba(255, 255, 255, 0.15);
    }
    50% {
        box-shadow: 0 0 15px rgba(255, 255, 255, 0.65),
                    0 0 30px rgba(255, 255, 255, 0.4),
                    0 0 45px rgba(255, 255, 255, 0.2);
    }
}

/* Particles emanating from timeline */
.timeline::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 60px;
    transform: translateX(-50%);
    background: radial-gradient(ellipse at center, 
        rgba(255, 255, 255, 0.08) 0%, 
        rgba(255, 255, 255, 0.03) 50%,
        transparent 70%);
    pointer-events: none;
    animation: particle-drift 10s ease-in-out infinite;
}

@keyframes particle-drift {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(-50%) scaleX(1);
    }
    50% {
        opacity: 0.6;
        transform: translateX(-50%) scaleX(1.2);
    }
}

/* Timeline Item */
.timeline-item {
    display: flex;
    align-items: flex-start;
    position: relative;
    margin-bottom: 50px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

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

/* Stagger animation delays */
.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.15s; }
.timeline-item:nth-child(3) { animation-delay: 0.2s; }
.timeline-item:nth-child(4) { animation-delay: 0.25s; }
.timeline-item:nth-child(5) { animation-delay: 0.3s; }
.timeline-item:nth-child(6) { animation-delay: 0.35s; }
.timeline-item:nth-child(7) { animation-delay: 0.4s; }
.timeline-item:nth-child(8) { animation-delay: 0.45s; }
.timeline-item:nth-child(9) { animation-delay: 0.5s; }
.timeline-item:nth-child(10) { animation-delay: 0.55s; }
.timeline-item:nth-child(11) { animation-delay: 0.6s; }
.timeline-item:nth-child(12) { animation-delay: 0.65s; }
.timeline-item:nth-child(13) { animation-delay: 0.7s; }
.timeline-item:nth-child(14) { animation-delay: 0.75s; }
.timeline-item:nth-child(15) { animation-delay: 0.8s; }
.timeline-item:nth-child(16) { animation-delay: 0.85s; }
.timeline-item:nth-child(17) { animation-delay: 0.9s; }
.timeline-item:nth-child(18) { animation-delay: 0.95s; }

/* Left Side - Alexander Speer */
.timeline-left {
    flex: 1;
    text-align: right;
    padding-right: 50px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-end;
}

.timeline-left .timeline-content {
    display: inline-block;
    text-align: right;
    max-width: 450px;
}

/* Right Side - Alexander the Great */
.timeline-right {
    flex: 1;
    padding-left: 50px;
}

.timeline-right .timeline-content {
    display: inline-block;
    text-align: left;
    max-width: 450px;
}

/* Event Details */
.timeline-year-age {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.timeline-event {
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
}

/* Center Icon - Glowing Dot */
.timeline-center {
    position: relative;
    flex-shrink: 0;
    z-index: 10;
}

.timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.8),
                0 0 24px rgba(255, 255, 255, 0.5),
                0 0 36px rgba(255, 255, 255, 0.2),
                inset 0 0 6px rgba(255, 255, 255, 0.3);
    animation: dot-glow 8s ease-in-out infinite;
}

/* Alexander Speer - Blue with white glow */
.timeline-dot.speer {
    background: rgba(100, 180, 255, 0.95);
    border: 2px solid rgba(100, 180, 255, 0.9);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                0 0 20px rgba(255, 255, 255, 0.3),
                0 0 30px rgba(100, 180, 255, 0.4),
                inset 0 0 8px rgba(255, 255, 255, 0.3);
}

/* Alexander the Great - Gold with white glow */
.timeline-dot.great {
    background: rgba(255, 215, 100, 0.95);
    border: 2px solid rgba(255, 215, 100, 0.9);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                0 0 20px rgba(255, 255, 255, 0.3),
                0 0 30px rgba(255, 215, 100, 0.4),
                inset 0 0 8px rgba(255, 255, 255, 0.3);
}

/* Shared datapoint - Split blue/gold */
.timeline-dot.shared {
    background: linear-gradient(90deg, rgba(100, 180, 255, 0.95) 0%, rgba(100, 180, 255, 0.95) 50%, rgba(255, 215, 100, 0.95) 50%, rgba(255, 215, 100, 0.95) 100%);
    border: 2px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5),
                0 0 20px rgba(255, 255, 255, 0.3),
                0 0 30px rgba(180, 200, 180, 0.4),
                inset 0 0 8px rgba(255, 255, 255, 0.3);
}

@keyframes dot-glow {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Particles emanating from dot */
.timeline-dot::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: -15px;
    bottom: -15px;
    border-radius: 50%;
    background: radial-gradient(circle at center, 
        rgba(255, 255, 255, 0.15) 0%, 
        rgba(255, 255, 255, 0.05) 40%,
        transparent 70%);
    pointer-events: none;
    animation: dot-particle-drift 9s ease-in-out infinite;
}

@keyframes dot-particle-drift {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

/* Empty side styling */
.timeline-left.empty,
.timeline-right.empty {
    visibility: hidden;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-container {
        padding: 100px 30px 60px 30px;
    }

    .timeline-section {
        padding: 60px 10px;
    }
}

@media (max-width: 768px) {
    .about-container {
        padding: 90px 20px 40px 20px;
    }

    .intro-section {
        margin-bottom: 60px;
        padding: 0 10px;
    }

    #intro-content p {
        font-size: 16px;
    }

    .timeline-headers {
        flex-direction: column;
        gap: 10px;
        padding: 0 10px;
        margin-bottom: 40px;
    }

    .timeline-label {
        text-align: center !important;
        padding: 0 !important;
        font-size: 20px;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 60px;
        margin-bottom: 35px;
    }

    .timeline-left,
    .timeline-right {
        text-align: left;
        padding: 0;
        width: 100%;
    }

    .timeline-left.empty,
    .timeline-right.empty {
        display: none;
    }

    .timeline-content {
        margin: 0 !important;
        max-width: 100% !important;
    }

    .timeline-center {
        position: absolute;
        left: 22px;
        top: 0;
    }
}

@media (max-width: 640px) {
    /* Hide home button on mobile - it's already in the VIEW TABS dropdown */
    #home-button-container {
        display: none !important;
    }

    #home-button {
        padding: 8px 12px !important;
        gap: 8px !important;
    }

    #home-button span {
        font-size: 10px !important;
        letter-spacing: 1px !important;
        padding: 8px 12px !important;
        min-height: 44px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }

    #brain-navigation-container {
        top: 10px !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        width: calc(100% - 130px) !important;
        max-width: calc(100vw - 130px) !important;
        margin-left: 0 !important;
    }

    #brain-navigation {
        padding: 8px 12px !important;
        gap: 8px !important;
        width: 100% !important;
        box-sizing: border-box !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        justify-content: flex-start !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
    }

    #brain-navigation::-webkit-scrollbar {
        display: none !important;
    }

    #brain-navigation a {
        font-size: 10px !important;
        letter-spacing: 1px !important;
        padding: 8px 12px !important;
        flex-shrink: 0 !important;
        min-height: 44px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center;
    }

    .about-container {
        padding: 80px 16px 30px 16px;
    }

    .hero-image-container {
        margin-bottom: 40px;
        border-radius: 12px;
    }

    .intro-section {
        margin-bottom: 50px;
    }

    #intro-content p {
        font-size: 15px;
        margin-bottom: 20px;
    }

    .timeline-headers {
        gap: 8px;
        margin-bottom: 30px;
    }

    .timeline-label {
        font-size: 18px;
    }

    .timeline-section {
        padding: 40px 0;
    }

    .timeline-item {
        padding-left: 50px;
    }

    .timeline::before {
        left: 25px;
    }

    .timeline-center {
        left: 17px;
    }
}

@media (max-width: 480px) {
    #home-button {
        padding: 6px 8px !important;
        gap: 6px !important;
    }

    #home-button span {
        font-size: 9px !important;
        padding: 6px 10px !important;
    }

    #brain-navigation-container {
        width: calc(100% - 110px) !important;
        max-width: calc(100vw - 110px) !important;
    }

    #brain-navigation {
        padding: 6px 8px !important;
        gap: 6px !important;
    }

    #brain-navigation a {
        font-size: 9px !important;
        padding: 6px 10px !important;
    }

    .about-container {
        padding: 70px 12px 25px 12px;
    }
}