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

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f1419 0%, #1a2128 50%, #0a0d11 100%);
    min-height: 100vh;
    color: #fff;
    overflow-x: hidden;
}

/* Back Button */
.back-button {
    position: fixed;
    top: 2rem;
    left: 2rem;
    color: #fff;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    z-index: 1000;
    padding: 1rem 1.5rem;
    border: 2px solid #FF8C42;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.back-button:hover {
    background: #FF8C42;
    color: #000;
    transform: translateX(-5px);
}

/* Project Header */
.project-header {
    text-align: center;
    padding: 6rem 2rem 4rem 2rem;
}

.project-header h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #FF8C42 0%, #4A90E2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.project-header .subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    opacity: 0.7;
}

/* Timeline Container */
.timeline-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 2rem 8rem 2rem;
    position: relative;
}

/* Timeline Entry */
.timeline-entry {
    display: grid;
    grid-template-columns: 1fr 4px 1fr;
    gap: 4rem;
    margin-bottom: 6rem;
    position: relative;
}

/* Left Side - Content */
.timeline-content {
    text-align: right;
    padding-right: 2rem;
}

.timeline-content .date {
    font-size: 0.9rem;
    font-weight: 700;
    color: #FF8C42;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: #fff;
}

.timeline-content p {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.85;
}

/* Timeline Line */
.timeline-line {
    position: relative;
    background: linear-gradient(180deg, #FF8C42 0%, #4A90E2 100%);
    width: 4px;
}

.timeline-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #FF8C42;
    border: 4px solid #0f1419;
    box-shadow: 0 0 20px rgba(255, 140, 66, 0.6);
}

.timeline-line.final::before {
    background: #4A90E2;
    box-shadow: 0 0 20px rgba(74, 144, 226, 0.6);
}

/* Right Side - Images */
.timeline-image {
    position: relative;
    cursor: pointer;
    transition: transform 0.4s ease;
}

.timeline-image:hover {
    transform: scale(1.03);
    z-index: 10;
}

.timeline-image img {
    width: 100%;
    height: auto;
    display: block;
    border: 3px solid #FF8C42;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 140, 66, 0.2);
    transition: all 0.4s ease;
}

.timeline-image:hover img {
    border-color: #4A90E2;
    box-shadow: 
        0 30px 80px rgba(0, 0, 0, 0.7),
        0 0 40px rgba(74, 144, 226, 0.4);
}

/* Image Caption - Shows on hover */
.image-caption {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.95);
    border: 2px solid #FF8C42;
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s, bottom 0.3s;
    pointer-events: none;
    backdrop-filter: blur(10px);
}

.timeline-image:hover .image-caption {
    opacity: 1;
    bottom: -20px;
}

/* Gulf Color Accents */
.timeline-entry:nth-child(odd) .timeline-line::before {
    background: #FF8C42;
    box-shadow: 0 0 20px rgba(255, 140, 66, 0.6);
}

.timeline-entry:nth-child(even) .timeline-line::before {
    background: #4A90E2;
    box-shadow: 0 0 20px rgba(74, 144, 226, 0.6);
}

.timeline-entry:nth-child(odd) .timeline-image img {
    border-color: #FF8C42;
}

.timeline-entry:nth-child(even) .timeline-image img {
    border-color: #4A90E2;
}

/* Responsive */
@media (max-width: 1024px) {
    .timeline-entry {
        gap: 2rem;
    }
    
    .timeline-content {
        padding-right: 1rem;
    }
}

@media (max-width: 768px) {
    .back-button {
        top: 1rem;
        left: 1rem;
        font-size: 1rem;
        padding: 0.75rem 1rem;
    }
    
    .project-header {
        padding: 4rem 1.5rem 2rem 1.5rem;
    }
    
    .project-header h1 {
        font-size: 2rem;
    }
    
    .project-header .subtitle {
        font-size: 1.2rem;
    }
    
    /* Stack vertically on mobile */
    .timeline-entry {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-bottom: 4rem;
    }
    
    .timeline-content {
        text-align: left;
        padding-right: 0;
        padding-left: 2rem;
        border-left: 4px solid #FF8C42;
        order: 2;
    }
    
    .timeline-line {
        display: none;
    }
    
    .timeline-image {
        order: 1;
        margin-bottom: 1rem;
    }
    
    .image-caption {
        position: relative;
        opacity: 1;
        bottom: 0;
        transform: none;
        margin-top: 1rem;
        white-space: normal;
    }
}

/* Optional: Subtle background texture */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 9999;
}

/* Animated gradient accent */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 20%, rgba(255, 140, 66, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(74, 144, 226, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: gulfGlow 20s ease-in-out infinite;
}

@keyframes gulfGlow {
    0%, 100% { 
        opacity: 0.3;
    }
    50% { 
        opacity: 0.6;
    }
}