/* ===== Variables ===== */
:root {
    --bg-dark: #0a0e17;
    --bg-card: #111827;
    --bg-elevated: #1a2234;
    --accent: #fbbf24;
    --accent-dim: #f59e0b;
    --accent-glow: rgba(251, 191, 36, 0.25);
    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --border: rgba(255, 255, 255, 0.08);
    --radius: 12px;
    --radius-lg: 20px;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-mono: ui-monospace, 'Cascadia Code', 'Consolas', monospace;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Keyframe Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes headlineReveal {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes floatSymbol {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.1;
    }
    50% {
        transform: translateY(-12px) rotate(8deg);
        opacity: 0.2;
    }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.7; }
}

@keyframes btnPulse {
    0%, 100% { box-shadow: 0 4px 20px var(--accent-glow); }
    50% { box-shadow: 0 4px 35px rgba(251, 191, 36, 0.4); }
}

@keyframes btnScale {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.nav-links a:hover {
    color: var(--accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 8rem 2rem 4rem;
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(251, 191, 36, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(251, 191, 36, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: fadeIn 1.5s ease-out both;
}

.hero-glow {
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    max-width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    animation: pulseGlow 4s ease-in-out infinite;
}

/* Electrical symbols in background */
.electrical-symbols {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.electrical-symbols .symbol {
    position: absolute;
    font-size: clamp(2rem, 4vw, 4rem);
    color: var(--accent);
    opacity: 0.12;
    font-weight: bold;
    animation: floatSymbol 8s ease-in-out infinite;
}

.symbol-1 { top: 10%; left: 5%; animation-delay: 0s; }
.symbol-2 { top: 15%; right: 5%; left: auto; animation-delay: 1s; }
.symbol-3 { top: 70%; left: 15%; animation-delay: 2s; }
.symbol-4 { top: 65%; right: 10%; left: auto; animation-delay: 0.5s; }
.symbol-5 { top: 5%; left: 50%; animation-delay: 1.5s; }
.symbol-6 { top: 45%; left: 5%; animation-delay: 2.5s; }
.symbol-7 { top: 40%; right: 5%; left: auto; font-size: 3rem; animation-delay: 3s; }
.symbol-8 { top: 85%; left: 45%; animation-delay: 4s; }
.symbol-9 { top: 25%; right: 15%; left: auto; animation-delay: 3.5s; }

.hero-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1200px;
    width: 100%;
    padding: 0 2rem;
}

.hero-content {
    position: relative;
    text-align: left;
    max-width: 560px;
    flex: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.hero h1 .gradient {
    background: linear-gradient(135deg, var(--accent) 0%, #fcd34d 50%, var(--accent-dim) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 5s ease infinite;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-image-wrap {
    flex: 0 0 380px;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    animation: fadeInUp 1s var(--ease-out-expo) 0.4s both;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Animation classes */
.animate-fade-in {
    animation: fadeInUp 0.8s var(--ease-out-expo) both;
}

.animate-fade-in:nth-child(1) { animation-delay: 0.1s; }
.animate-fade-in:nth-child(2) { animation-delay: 0.2s; }
.animate-fade-in:nth-child(3) { animation-delay: 0.3s; }
.animate-fade-in:nth-child(4) { animation-delay: 0.4s; }
.animate-fade-in:nth-child(5) { animation-delay: 0.5s; }

.animate-headline {
    animation: headlineReveal 1s var(--ease-out-expo) 0.2s both;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

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

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 1.8rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dim) 100%);
    background-size: 200% 200%;
    color: var(--bg-dark);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    background-position: 100% 50%;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 35px rgba(251, 191, 36, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-animate {
    transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s ease, background-position 0.5s ease;
}

.btn-primary.btn-animate:hover {
    animation: btnPulse 1.5s ease-in-out infinite;
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(251, 191, 36, 0.15);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    position: relative;
    display: flex;
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 3rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--text-muted);
}

/* ===== Services ===== */
.services {
    padding: 6rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.service-card {
    animation: fadeInUp 0.6s var(--ease-out-expo) both;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.service-card:hover {
    border-color: rgba(251, 191, 36, 0.3);
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.35);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== About ===== */
.about {
    padding: 6rem 0;
    background: var(--bg-card);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.about-content p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.about-features {
    list-style: none;
    margin-top: 1.5rem;
}

.about-features li {
    padding: 0.5rem 0;
    color: var(--text-muted);
}

.about-features li::before {
    content: '';
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    min-width: 280px;
}

.about-card-inner {
    text-align: center;
}

.about-location {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.about-card p {
    color: var(--text-muted);
}

/* ===== Contact ===== */
.contact {
    padding: 6rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.contact-item a {
    color: var(--accent);
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    margin-top: 0.5rem;
}

/* ===== Footer ===== */
.footer {
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-muted);
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Form Success Message ===== */
.form-success {
    padding: 1.5rem;
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.4);
    border-radius: var(--radius);
    color: #4ade80;
    text-align: center;
    margin-top: 1rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .about-visual {
        order: -1;
    }
}

@media (max-width: 900px) {
    .hero-inner {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        text-align: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image-wrap {
        flex: 0 0 auto;
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-card);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        border-left: 1px solid var(--border);
        transition: right var(--transition);
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-image-wrap {
        max-width: 100%;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 6rem 1rem 3rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}