/* ============================================================================
   DeviceHub - Technical/Industrial Theme
   Blueprint grids, circuit patterns, and engineering aesthetics
   ============================================================================ */

/* === Grid Backgrounds === */
.hero__grid-bg,
.expertise__grid-bg,
.contact__grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.03;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(0deg, rgba(0,0,0,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

.expertise__grid-bg {
    opacity: 0.08;
    background-image:
        linear-gradient(0deg, rgba(255,255,255,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
}

.contact__grid-bg {
    opacity: 0.02;
    background-image:
        linear-gradient(0deg, rgba(219,15,22,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(219,15,22,0.1) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* === Technical Diagrams === */
.technical-diagram {
    position: relative;
    background-color: var(--color-gray-900);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.diagram__grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(0deg, rgba(42,128,243,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42,128,243,0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.5;
}

.diagram__content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    width: 100%;
}

.diagram__node {
    background: linear-gradient(135deg, rgba(42,128,243,0.2), rgba(219,15,22,0.2));
    border: 2px solid var(--color-blue);
    border-radius: var(--radius-sm);
    padding: var(--space-md) var(--space-lg);
    color: var(--color-white);
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
}

.diagram__node::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -20px;
    width: 8px;
    height: 8px;
    background-color: var(--color-primary);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 10px var(--color-primary);
}

.diagram__node:first-child::before {
    display: none;
}

.diagram__connector {
    position: absolute;
    top: 20%;
    left: 10%;
    right: 10%;
    height: 60%;
    pointer-events: none;
}

.diagram__connector::before,
.diagram__connector::after {
    content: '';
    position: absolute;
    background: linear-gradient(90deg,
        var(--color-blue) 0%,
        transparent 50%,
        var(--color-primary) 100%);
    height: 1px;
    opacity: 0.3;
}

.diagram__connector::before {
    top: 33%;
    left: 0;
    right: 0;
}

.diagram__connector::after {
    top: 66%;
    left: 0;
    right: 0;
}

/* === Circuit Board Pattern === */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(219,15,22,0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(42,128,243,0.05) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

/* === Technical Border Accents === */
.focus-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, var(--color-primary), var(--color-blue));
    transition: height var(--transition-slow);
}

.focus-card:hover::before {
    height: 100%;
}

.project-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background:
        linear-gradient(90deg, transparent calc(50% - 1px), var(--color-gray-200) calc(50% - 1px), var(--color-gray-200) calc(50% + 1px), transparent calc(50% + 1px)),
        linear-gradient(0deg, transparent calc(50% - 1px), var(--color-gray-200) calc(50% - 1px), var(--color-gray-200) calc(50% + 1px), transparent calc(50% + 1px));
    background-size: 10px 10px;
    opacity: 0.3;
    pointer-events: none;
}

/* === Scan Line Effect === */
@keyframes scanline {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(100%);
    }
}

.expertise::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent,
        var(--color-blue) 50%,
        transparent);
    opacity: 0.1;
    animation: scanline 8s linear infinite;
    pointer-events: none;
    z-index: 1;
}

/* === Hexagon Accent Pattern === */
.contact::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background-image:
        radial-gradient(circle, var(--color-gray-200) 2px, transparent 2px);
    background-size: 30px 30px;
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

/* === Focus Area Technical Enhancements === */
.focus-area__label::before {
    content: '◆';
    margin-right: var(--space-sm);
    color: var(--color-primary);
}

.spec__label::before {
    content: '▸';
    margin-right: var(--space-xs);
    color: var(--color-primary);
}

/* === Glowing Accents === */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(219,15,22,0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(219,15,22,0.6);
    }
}

.stat__value {
    position: relative;
}

.stat__value::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

/* === Technical Typography === */
.tech-item {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.project-card__year,
.focus-area__label,
.contact-detail__title {
    font-family: var(--font-mono);
}

/* === Data Visualization Bars === */
.metric::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg,
        var(--color-primary) 0%,
        var(--color-blue) 100%);
    margin-top: var(--space-xs);
    opacity: 0.5;
}

/* === Interactive Circuit Lines === */
@keyframes circuit-flow {
    0% {
        stroke-dashoffset: 1000;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.focus-card__icon svg {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
}

.focus-card:hover .focus-card__icon svg {
    animation: circuit-flow 2s ease forwards;
}

/* === Corner Brackets === */
.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    border-top: 2px solid var(--color-gray-300);
    border-left: 2px solid var(--color-gray-300);
    opacity: 0.5;
    transition: all var(--transition-normal);
}

.project-card:hover::before {
    width: 30px;
    height: 30px;
    border-color: var(--color-primary);
    opacity: 1;
}

/* === Code Block Styling === */
code, pre {
    font-family: var(--font-mono);
    background-color: rgba(0,0,0,0.04);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

/* === Technical Dividers === */
.section-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-blue));
    margin: var(--space-lg) auto 0;
}

.section-header--light::after {
    background: linear-gradient(90deg, var(--color-white), var(--color-blue));
}

/* === Animated Background Particles === */
@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    33% {
        transform: translateY(-20px) translateX(10px);
    }
    66% {
        transform: translateY(20px) translateX(-10px);
    }
}

.expertise__grid-bg::before,
.expertise__grid-bg::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background-color: var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 8s ease-in-out infinite;
}

.expertise__grid-bg::before {
    top: 20%;
    left: 30%;
    animation-delay: 0s;
}

.expertise__grid-bg::after {
    top: 60%;
    right: 25%;
    animation-delay: 2s;
    background-color: var(--color-blue);
}

/* === Form Technical Enhancements === */
.form-input:focus::placeholder,
.form-textarea:focus::placeholder {
    opacity: 0.3;
}

.form-group {
    position: relative;
}

.form-group::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-blue));
    transition: width var(--transition-slow);
}

.form-group:focus-within::after {
    width: 100%;
}

/* === Status Indicators === */
.project-card__category::before {
    content: '●';
    margin-right: var(--space-xs);
    animation: pulse-glow 2s ease-in-out infinite;
}

/* === Blueprint Corner Markers === */
.hero__focus-cards::before,
.hero__focus-cards::after,
.projects__grid::before,
.projects__grid::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border: 2px solid var(--color-gray-300);
    opacity: 0.3;
}

.hero__focus-cards::before {
    top: 0;
    left: 0;
    border-bottom: none;
    border-right: none;
}

.hero__focus-cards::after {
    top: 0;
    right: 0;
    border-bottom: none;
    border-left: none;
}

.projects__grid::before {
    bottom: 0;
    left: 0;
    border-top: none;
    border-right: none;
}

.projects__grid::after {
    bottom: 0;
    right: 0;
    border-top: none;
    border-left: none;
}

/* === Technical Stats Enhancement === */
.hero__stats {
    position: relative;
}

.hero__stats::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        var(--color-gray-200) 20%,
        var(--color-gray-200) 80%,
        transparent);
    z-index: -1;
}

.stat {
    position: relative;
    background-color: var(--color-white);
    padding: 0 var(--space-md);
}

/* === Tooltip-style Enhancements === */
.tech-tag {
    position: relative;
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}