/* Reset and Base Styles */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --dark: #1e293b;
    --light: #f8fafc;
    --white: #ffffff;
    --text: #334155;
    --text-light: #64748b;
    --max-width: 1200px;
    --header-height: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    color: var(--text);
    background: var(--white);
}

.container {
    width: min(var(--max-width), 100% - 2rem);
    margin-inline: auto;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

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

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-cta:hover {
    background: var(--primary-dark);
    color: white !important;
}

.mobile-toggle {
    display: none;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 4rem;
    background: linear-gradient(135deg, var(--light) 0%, var(--white) 100%);
}

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

.hero-text {
    max-width: 600px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    margin-left: 1rem;
}

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

/* Sections */
.section {
    padding: 5rem 0;
}

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

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

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

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

.service-card ul {
    list-style: none;
    margin-top: 1rem;
}

.service-card li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-card li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Process Timeline */
.process-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    position: relative;
    padding: 2rem;
    padding-left: 4rem;
    margin-bottom: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.timeline-number {
    position: absolute;
    left: 1rem;
    top: 2rem;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tech-card ul {
    list-style: none;
    margin-top: 1rem;
}

.tech-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--light);
}

.tech-card li:last-child {
    border-bottom: none;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 4rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

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

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    padding: 0.5rem 0;
    display: inline-block;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Mobile Styles */
@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
        background: none;
        border: none;
        width: 30px;
        height: 20px;
        position: relative;
        cursor: pointer;
    }

    .mobile-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background: var(--text);
        position: absolute;
        transition: 0.3s;
    }

    .mobile-toggle span:first-child {
        top: 0;
    }

    .mobile-toggle span:nth-child(2) {
        top: 50%;
        transform: translateY(-50%);
    }

    .mobile-toggle span:last-child {
        bottom: 0;
    }

    .mobile-toggle.active span:first-child {
        transform: rotate(45deg);
        top: 9px;
    }

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

    .mobile-toggle.active span:last-child {
        transform: rotate(-45deg);
        bottom: 9px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        margin: 0 auto;
    }

    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .btn-secondary {
        margin-left: 0;
    }
}

/* Loading Animations */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.loading-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-circle {
    width: 50px;
    height: 50px;
    border: 4px solid var(--light);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 1s linear infinite;
}

.loader-text {
    color: var(--primary);
    font-weight: 600;
    letter-spacing: 0.5px;
    animation: pulse 1.5s ease-in-out infinite;
}

/* Loading Animations for Content */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-up.loaded {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay {
    animation: fadeIn 0.5s ease-out forwards;
    animation-delay: var(--delay, 0s);
    opacity: 0;
}

/* Shimmer Loading Effect */
.shimmer {
    background: linear-gradient(90deg, 
        var(--light) 0%, 
        var(--white) 50%, 
        var(--light) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Lazy Load Images */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

.lazy-image.loaded {
    opacity: 1;
}
[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}