/* ========================================
   IT Services - Modern Professional Design
   ======================================== */

/* === CSS Variables & Color Scheme === */
:root {
    /* Primary Colors - Tech Blue Theme */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #06b6d4;
    --accent: #8b5cf6;

    /* Neutral Colors */
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --light: #f1f5f9;
    --white: #ffffff;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #06b6d4;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #2563eb 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Borders & Shadows */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

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

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

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--gray);
}

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

a:hover {
    color: var(--primary-dark);
}

.highlight {
    color: var(--primary);
}

/* === Container & Grid === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--dark);
    box-shadow: var(--shadow-lg);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    text-decoration: none;
}

.logo i {
    color: var(--primary);
    font-size: 1.75rem;
}

.logo-text {
    font-family: var(--font-mono);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--gray-light);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: var(--transition);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.nav-dropdown .nav-link i {
    font-size: 0.75rem;
    margin-left: 0.25rem;
    transition: var(--transition);
}

.nav-dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dark-light);
    min-width: 220px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xs);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--gray-light);
    border-radius: calc(var(--border-radius) / 2);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--white);
    transform: translateX(5px);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* === Flash Messages === */
.flash-container {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    z-index: 999;
}

.flash {
    padding: var(--spacing-sm);
    animation: slideDown 0.3s ease;
}

.flash .container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
}

.flash-success .container { border-left-color: var(--success); }
.flash-error .container { border-left-color: var(--error); }
.flash-warning .container { border-left-color: var(--warning); }

.flash i {
    font-size: 1.25rem;
}

.flash-success i { color: var(--success); }
.flash-error i { color: var(--error); }
.flash-warning i { color: var(--warning); }

.flash-close {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray);
    font-size: 1.25rem;
    transition: var(--transition);
}

.flash-close:hover {
    color: var(--dark);
}

/* === Main Content === */
main {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

/* === Sections === */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-dark {
    background: var(--gradient-dark);
    color: var(--white);
}

.section-light {
    background: var(--light);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.section-dark .section-subtitle {
    color: var(--gray-light);
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* === Footer === */
.footer {
    background: var(--gradient-dark);
    color: var(--gray-light);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.footer-logo i {
    color: var(--primary);
}

.footer-description {
    margin-bottom: var(--spacing-md);
    color: var(--gray-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col a {
    color: var(--gray-light);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-light);
}

.contact-info i {
    color: var(--primary);
    width: 20px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* === Animations === */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

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

/* === Responsive Design === */
@media (max-width: 968px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        transform: translateX(100%);
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: var(--spacing-xs);
        display: none;
    }

    .nav-dropdown.active .dropdown-menu {
        display: block;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

@media (max-width: 480px) {
    :root {
        --spacing-3xl: 3rem;
        --spacing-2xl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}