/* Custom Styles for Personal Website of Vivaan Thadani */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #0284c7;
    --accent-hover: #0369a1;
    --border-color: #e2e8f0;
    --grid-color: rgba(2, 132, 199, 0.04);
    --grid-accent: rgba(2, 132, 199, 0.08);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --card-glow: rgba(2, 132, 199, 0.05);
}

.dark {
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #7dd3fc;
    --border-color: #1f2937;
    --grid-color: rgba(56, 189, 248, 0.03);
    --grid-accent: rgba(56, 189, 248, 0.06);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.6), 0 4px 6px -4px rgb(0 0 0 / 0.6);
    --card-glow: rgba(56, 189, 248, 0.05);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

/* Blueprint Grid Background Pattern */
.blueprint-grid {
    background-size: 40px 40px, 8px 8px;
    background-image: 
        linear-gradient(to right, var(--grid-accent) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-accent) 1px, transparent 1px),
        linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-position: center center;
}

/* Glassmorphism Classes */
.glass-panel {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.dark .glass-panel {
    background: rgba(17, 24, 39, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
    border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Micro-interactions & Custom Cards */
.project-card {
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

@media (hover: hover) {
    .project-card:hover {
        transform: translateY(-4px);
        border-color: var(--accent-color);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 0 15px var(--card-glow);
    }
    
    .dark .project-card:hover {
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 0 20px var(--card-glow);
    }
}

/* Timeline Customizations */
.timeline-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--accent-color);
    opacity: 0.15;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.85);
        opacity: 0.35;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.4);
        opacity: 0;
    }
    100% {
        transform: translate(-50%, -50%) scale(0.85);
        opacity: 0.35;
    }
}

/* Technical Details Overlay styles */
.tech-spec-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
}

/* Active Nav Link Marker */
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* Hotspot Styles for 3D Model Viewer */
.hotspot-pin {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    background-color: var(--accent-color);
    box-shadow: 0 0 8px rgba(0,0,0,0.5);
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
    position: relative;
}

.hotspot-pin:hover {
    transform: scale(1.25);
    background-color: var(--accent-hover);
}

.hotspot-tooltip {
    display: none;
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: 220px;
    padding: 10px;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f8fafc;
    font-size: 11px;
    line-height: 1.4;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    z-index: 50;
    pointer-events: none;
}

.dark .hotspot-tooltip {
    background: rgba(15, 23, 42, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.hotspot-pin:hover .hotspot-tooltip,
.hotspot-pin:focus-within .hotspot-tooltip {
    display: block;
}