/* ====== CSS RESET & BASE ====== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Color palette - IT/tech professional look */
    --primary: #0066cc;           /* Deep blue */
    --primary-dark: #004999;
    --accent: #00d4aa;            /* Teal/cyan accent */
    --accent-purple: #7c3aed;
    --bg-dark: #0a0a0f;           /* Dark background */
    --bg-card: #14141c;
    --bg-light: #f8fafc;
    --text-white: #ffffff;
    --text-gray: #94a3b8;
    --text-dark: #1e293b;
    --border-color: #2d2d3a;
    --success: #10b981;
    --error: #ef4444;

    /* Tech-themed gradients */
    --gradient-tech: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
    --gradient-circuit: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);

    /* Shadows & effects */
    --shadow-glow: 0 0 20px rgba(0, 102, 204, 0.3);
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-white);
    background-color: var(--bg-dark);
    position: relative;
    overflow-x: hidden;
}

/* ====== DECORATIVE CIRCUIT BACKGROUND ====== */
.circuit-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.05;
    background-image: 
        /* Horizontal lines */
        repeating-linear-gradient(0deg, transparent, transparent 49px, var(--accent) 49px, var(--accent) 50px),
        /* Vertical lines */
        repeating-linear-gradient(90deg, transparent, transparent 49px, var(--primary) 49px, var(--primary) 50px),
        /* Dots for circuit nodes */
        radial-gradient(circle at 100px 100px, var(--accent) 3px, transparent 3px),
        radial-gradient(circle at 300px 200px, var(--primary) 3px, transparent 3px),
        radial-gradient(circle at 500px 150px, var(--accent) 3px, transparent 3px),
        radial-gradient(circle at 700px 300px, var(--primary) 3px, transparent 3px),
        radial-gradient(circle at 900px 100px, var(--accent) 3px, transparent 3px),
        radial-gradient(circle at 1100px 250px, var(--primary) 3px, transparent 3px),
        radial-gradient(circle at 1300px 180px, var(--accent) 3px, transparent 3px);
    background-size: 200px 200px, 200px 200px, 100% 100%;
}

@media (max-width: 768px) {
    .circuit-bg {
        background-size: 100px 100px, 100px 100px;
    }
}

/* ====== LAYOUT ====== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ====== HEADER & NAV ====== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    color: var(--text-white);
    text-shadow: var(--shadow-glow);
}

.logo i {
    font-size: 1.75rem;
}

/* Hamburger */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.75rem;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 28px;
    height: 3px;
    background-color: var(--text-white);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: var(--text-white);
    transition: var(--transition);
}

.hamburger::before {
    transform: translateY(-10px);
}

.hamburger::after {
    transform: translateY(10px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
}

/* Navigation */
.nav {
    transition: var(--transition);
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-gray);
    font-weight: 600;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

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

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-tech);
    border-radius: 2px;
}

/* ====== HERO SECTION ====== */
.hero {
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center top, rgba(0, 102, 204, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-gray);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ====== BUTTONS ====== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-tech);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 30px rgba(0, 102, 204, 0.5);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 0 15px rgba(0, 212, 170, 0.3);
}

/* ====== SECTIONS ====== */
.section {
    padding: 5rem 0;
    position: relative;
}

.section-alt {
    background: var(--bg-card);
    position: relative;
}

.section-alt::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-tech);
    opacity: 0.3;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-white);
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-tech);
    margin: 1rem auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ====== CARDS ====== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.1), transparent);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.card:hover::before {
    left: 100%;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

/* ====== SERVICES PAGE ====== */
.service-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-icon {
    font-size: 3rem;
    background: var(--gradient-tech);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    background-color: rgba(0, 102, 204, 0.1);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.service-card p {
    color: var(--text-gray);
    flex-grow: 1;
}

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

.service-features li {
    padding: 0.5rem 0;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.service-features li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--accent);
}

/* ====== ABOUT PAGE ====== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.about-text p {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.about-visual {
    position: relative;
}

.tech-diagram {
    width: 100%;
    height: 400px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.server-rack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 2;
}

.server-unit {
    width: 80%;
    height: 40px;
    background: var(--gradient-tech);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 0 10px rgba(0, 102, 204, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.network-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.network-node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
    animation: float 3s ease-in-out infinite;
}

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

/* ====== VALUES GRID ====== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.value-card {
    text-align: center;
    padding: 2rem;
}

.value-icon {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.value-card h3 {
    margin-bottom: 1rem;
    color: var(--text-white);
}

.value-card p {
    color: var(--text-gray);
}

/* ====== CONTACT FORM ====== */
.contact-container {
    max-width: 650px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-white);
    font-size: 1rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-card);
    color: var(--text-white);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.2);
}

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

.form-error {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 1.5rem;
    border-radius: var(--radius);
    margin-bottom: 2rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.form-submit {
    width: 100%;
    font-size: 1.125rem;
    padding: 1.25rem;
    margin-top: 1rem;
}

/* ====== CONTACT INFO ====== */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-info-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.contact-info-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--accent);
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 50%;
}

.contact-details h4 {
    margin-bottom: 0.5rem;
    color: var(--text-white);
}

.contact-details p {
    color: var(--text-gray);
}

.contact-details a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.contact-details a:hover {
    color: var(--text-white);
}

/* ====== SCROLL TO TOP ====== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-tech);
    color: white;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 30px rgba(0, 102, 204, 0.6);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--bg-card);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
        padding: 6rem 2rem 2rem;
        transition: var(--transition);
        border-left: 1px solid var(--border-color);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-link {
        font-size: 1.25rem;
        padding: 1rem 0;
        display: block;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .tech-diagram {
        height: 300px;
    }

    .footer-content {
        text-align: center;
        gap: 2rem;
    }

    .footer-tech-stack {
        justify-content: center;
    }
}

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

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

    .contact-info-card {
        flex-direction: column;
        text-align: center;
    }
}

/* ====== UTILITY CLASSES ====== */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mt-0 { margin-top: 0; }

.hidden { display: none; }

/* ====== ANIMATIONS ====== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* ====== ACCESSIBILITY ====== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}