/* ═══════════════════════════════════════════════════════════════════════════
   BlackBull Consulting - Neural Circuitry Design System
   Inspired by cybernetic aesthetics and precision engineering
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Design Tokens ───────────────────────────────────────────────────────── */
:root {
    /* Primary Colors - Extracted from logo */
    --bg-primary: #0a1628;
    --bg-secondary: #0d1f3c;
    --bg-tertiary: #112240;
    --bg-card: rgba(13, 31, 60, 0.7);

    /* Accent Colors */
    --accent-cyan: #00d4ff;
    --accent-cyan-dim: rgba(0, 212, 255, 0.6);
    --accent-cyan-subtle: rgba(0, 212, 255, 0.15);
    --accent-light: #4fc3f7;
    --accent-ice: #7dd3fc;
    --accent-glow: rgba(0, 212, 255, 0.4);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders & Lines */
    --border-color: rgba(0, 212, 255, 0.2);
    --border-active: rgba(0, 212, 255, 0.5);

    /* Typography */
    --font-display: 'Chakra Petch', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Effects */
    --glow-sm: 0 0 10px var(--accent-glow);
    --glow-md: 0 0 20px var(--accent-glow);
    --glow-lg: 0 0 40px var(--accent-glow);
}

/* ─── Reset & Base ────────────────────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-mono);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ─── Global Overlays ─────────────────────────────────────────────────────── */

/* Scanline Effect */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 212, 255, 0.1) 2px,
        rgba(0, 212, 255, 0.1) 4px
    );
}

/* Circuit Grid Background */
.circuit-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.4;
    background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
}

/* ─── Header & Navigation ─────────────────────────────────────────────────── */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(180deg, var(--bg-primary) 0%, transparent 100%);
    transition: var(--transition-base);
}

#header.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    transition: var(--transition-base);
}

.nav-logo:hover {
    transform: scale(1.02);
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    position: relative;
    padding: var(--space-sm) 0;
    transition: var(--transition-base);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-cyan);
    transition: var(--transition-base);
    box-shadow: var(--glow-sm);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--accent-cyan);
}

.nav-link:hover::before,
.nav-link:focus::before {
    width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-sm);
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--accent-cyan);
    transition: var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    transition: var(--transition-slow);
    z-index: 999;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-link {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.mobile-nav-link:hover {
    color: var(--accent-cyan);
    text-shadow: var(--glow-sm);
}

/* ─── Hero Section ────────────────────────────────────────────────────────── */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-2xl) var(--space-lg);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(79, 195, 247, 0.1) 0%, transparent 40%);
}

.hero-circuits {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.circuit-svg {
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 900px;
}

.hero-logo-container {
    position: relative;
    margin-bottom: var(--space-xl);
}

.hero-logo {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 0 60px rgba(0, 212, 255, 0.3));
    animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.8; }
}

.hero-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.status-line {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent-cyan);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.3s;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: statusBlink 2s ease-in-out infinite;
    box-shadow: var(--glow-sm);
}

@keyframes statusBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
}

.title-line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.title-line:first-child {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--text-primary);
    animation-delay: 0.5s;
}

.title-line.accent {
    font-size: clamp(2.5rem, 6vw, 4rem);
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-light) 50%, var(--accent-ice) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation-delay: 0.7s;
    filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.3));
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    min-height: 1.6em;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1s;
}

.cursor {
    color: var(--accent-cyan);
    animation: cursorBlink 1s step-end infinite;
}

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

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1.2s;
}

/* ─── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 4px;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-light) 100%);
    color: var(--bg-primary);
    box-shadow: var(--glow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-ice) 100%);
    opacity: 0;
    transition: var(--transition-base);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-lg);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary .btn-text,
.btn-primary .btn-icon {
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.btn-secondary:hover {
    background: var(--accent-cyan-subtle);
    transform: translateY(-2px);
    box-shadow: var(--glow-sm);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

/* ─── Scroll Indicator ────────────────────────────────────────────────────── */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1.5s;
}

.scroll-text {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--accent-cyan) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ─── Section Styles ──────────────────────────────────────────────────────── */
section {
    padding: var(--space-2xl) var(--space-lg);
    position: relative;
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.section-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
}

.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-active), transparent);
}

/* ─── Services Section ────────────────────────────────────────────────────── */
#services {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.services-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--space-xl);
    transition: var(--transition-base);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-cyan-subtle) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition-base);
}

.service-card:hover {
    border-color: var(--border-active);
    transform: translateY(-4px);
    box-shadow: var(--glow-md);
}

.service-card:hover::before {
    opacity: 1;
}

/* Corner Decorations */
.card-corner {
    position: absolute;
    width: 12px;
    height: 12px;
    border-color: var(--accent-cyan);
    border-style: solid;
    transition: var(--transition-base);
}

.card-corner.top-left {
    top: 0;
    left: 0;
    border-width: 2px 0 0 2px;
}

.card-corner.top-right {
    top: 0;
    right: 0;
    border-width: 2px 2px 0 0;
}

.card-corner.bottom-left {
    bottom: 0;
    left: 0;
    border-width: 0 0 2px 2px;
}

.card-corner.bottom-right {
    bottom: 0;
    right: 0;
    border-width: 0 2px 2px 0;
}

.service-card:hover .card-corner {
    width: 20px;
    height: 20px;
    border-color: var(--accent-light);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-cyan);
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
    transition: var(--transition-base);
}

.service-card:hover .service-icon {
    color: var(--accent-light);
    filter: drop-shadow(var(--glow-sm));
    transform: scale(1.1);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 1;
}

.service-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    position: relative;
    z-index: 1;
}

.tag {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    border: 1px solid var(--border-color);
    background: rgba(0, 212, 255, 0.05);
}

/* ─── Portfolio Section ───────────────────────────────────────────────────── */
#portfolio {
    background: var(--bg-secondary);
}

.portfolio-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.portfolio-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-base);
}

.portfolio-card:hover {
    border-color: var(--border-active);
    transform: translateY(-4px);
    box-shadow: var(--glow-md);
}

.portfolio-visual {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.visual-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.5;
    transition: var(--transition-base);
}

.portfolio-card:hover .visual-grid {
    opacity: 0.8;
    background-size: 25px 25px;
}

.visual-content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--space-md);
}

.project-type {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    background: var(--bg-primary);
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
}

.project-status {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
}

.project-status.online {
    color: #4ade80;
}

.portfolio-info {
    padding: var(--space-lg);
}

.portfolio-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.portfolio-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.portfolio-metrics {
    display: flex;
    gap: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.metric-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

/* ─── About Section ───────────────────────────────────────────────────────── */
#about {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.about-container {
    max-width: 1000px;
    margin: 0 auto;
}

.about-intro {
    margin-bottom: var(--space-2xl);
}

.intro-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: center;
}

.intro-text strong {
    color: var(--accent-cyan);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 140px;
}

.timeline-track {
    position: absolute;
    left: 120px;
    top: 0;
    bottom: 0;
    width: 2px;
}

.track-line {
    position: absolute;
    inset: 0;
    background: var(--border-color);
}

.track-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--accent-light) 100%);
    transition: height 0.5s ease;
    box-shadow: var(--glow-sm);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
    opacity: 0;
    transform: translateX(20px);
    transition: var(--transition-slow);
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-node {
    position: absolute;
    left: -140px;
    top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 140px;
}

.node-year {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.node-dot {
    width: 12px;
    height: 12px;
    background: var(--bg-primary);
    border: 2px solid var(--accent-cyan);
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.node-dot.pulse {
    animation: nodePulse 2s ease-in-out infinite;
}

@keyframes nodePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(0, 212, 255, 0); }
}

.timeline-item.visible .node-dot {
    background: var(--accent-cyan);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--space-lg);
    margin-left: var(--space-lg);
}

.timeline-content h4 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.timeline-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.timeline-code {
    display: block;
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 0, 0, 0.4);
    border-left: 2px solid var(--accent-cyan);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-light);
}

/* ─── Contact Section ─────────────────────────────────────────────────────── */
#contact {
    background: var(--bg-primary);
}

.contact-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-heading {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.contact-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.contact-value {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    margin-bottom: var(--space-sm);
}

.form-input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-sm);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.input-focus {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: var(--transition-base);
}

.form-input:focus ~ .input-focus {
    width: 100%;
}

.btn-submit {
    align-self: flex-start;
    margin-top: var(--space-md);
}

.form-status {
    padding: var(--space-md);
    font-size: 0.875rem;
    text-align: center;
}

.form-status.success {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.form-status.error {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.3);
}

/* ─── Footer ──────────────────────────────────────────────────────────────── */
#footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-xl) var(--space-lg);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.footer-logo {
    height: 40px;
    width: auto;
    opacity: 0.8;
}

.footer-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.footer-link:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-sm);
}

.footer-link svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
}

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.system-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(74, 222, 128, 0); }
}

.status-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #4ade80;
}

/* ─── Animations ──────────────────────────────────────────────────────────── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Scroll-triggered animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Responsive Design ───────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .portfolio-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --space-xl: 3rem;
        --space-2xl: 4rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-logo {
        max-width: 300px;
    }

    .services-container {
        grid-template-columns: 1fr;
    }

    .timeline {
        padding-left: 0;
    }

    .timeline-track {
        left: 20px;
    }

    .timeline-node {
        left: 0;
        width: 40px;
        flex-direction: row;
        gap: var(--space-sm);
    }

    .node-year {
        position: absolute;
        left: 45px;
        top: 0;
        margin: 0;
    }

    .timeline-content {
        margin-left: 50px;
    }

    .section-header {
        flex-wrap: wrap;
    }

    .section-line {
        order: 3;
        flex-basis: 100%;
        margin-top: var(--space-sm);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .portfolio-metrics {
        flex-direction: column;
        gap: var(--space-md);
    }
}

/* ─── Reduced Motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ─── Focus Styles for Accessibility ──────────────────────────────────────── */
:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

/* ─── Print Styles ────────────────────────────────────────────────────────── */
@media print {
    .scanlines,
    .circuit-grid,
    .hero-circuits,
    .scroll-indicator,
    #header {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }
}