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

:root {
    --navy: #0a1628;
    --electric-blue: #0066cc;
    --cyan: #00b4d8;
    --turquoise: #00d9ff;
    --green: #00ff88;
    --dark-bg: #0f1419;
    --card-bg: #1a1f2e;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;

    /* unified nav height for consistent layout */
    --nav-height: 70px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 22, 40, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    z-index: 1000;
    /* use fixed height instead of vertical padding for consistency */
    height: var(--nav-height);
    padding: 0;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    /* account for fixed nav so hero doesn't overflow on small screens */
    min-height: calc(100vh - var(--nav-height));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 2rem;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 102, 204, 0.2), transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(0, 255, 136, 0.15), transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.hero-content {
    max-width: 800px;
    text-align: center;
    position: relative;
    z-index: 1;
    margin-top: 3rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--turquoise), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--electric-blue), var(--cyan));
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    animation: fadeInUp 1s ease 0.4s both;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 180, 216, 0.4);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Styling */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.service-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(0, 180, 216, 0.2);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.2);
    border-color: var(--turquoise);
}

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

.service-card h3 {
    color: var(--turquoise);
    margin-bottom: 1rem;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid rgba(0, 180, 216, 0.2);
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(0, 180, 216, 0.2);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.2);
}

.portfolio-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    border-radius: 15px 15px 0 0;
}

.portfolio-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.portfolio-content h3 {
    color: var(--turquoise);
    margin-bottom: 0.5rem;
}

.portfolio-tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(0, 255, 136, 0.1);
    color: var(--green);
    border-radius: 20px;
    font-size: 0.85rem;
}

.portfolio-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Before/After Comparison */
.before-after {
    position: relative;
    padding-top: 1.5rem;
    margin-top: auto;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.comparison-item {
    text-align: center;
}

.comparison-item span {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.before-box {
    background: rgba(204, 0, 0, 0.1);
    border: 1px solid rgba(204, 0, 0, 0.3);
}

.after-box {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--green);
}

/* --- Comparison List Styling --- */

/* Base styles for both lists */
.before-list, .after-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
    font-size: 0.85rem;
}

.before-list li, .after-list li {
    padding: 0.2rem 0;
    color: var(--text-secondary);
}

/* Styling for the "Before" list items with the X symbol */
.before-list li:before {
    content: "❌ ";
    color: #ff6b6b;
    margin-right: 0.5rem;
}

/* Styling for the "After" list items with the checkmark symbol */
.after-list li:before {
    content: "✓ ";
    color: var(--green);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Adjust the comparison box to fit the list content */
.comparison-box {
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
}

/* --- Portfolio Link Button Styling --- */

/* Container to add space above the link */
.portfolio-link-container {
    margin-top: auto;
    padding-top: 1.5rem;
}

/* The new button style, based on .cta-btn */
.portfolio-link {
    display: inline-block;
    padding: 0.7rem 1.8rem;
    background: linear-gradient(135deg, var(--electric-blue), var(--cyan));
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.portfolio-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 180, 216, 0.4);
}

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

.pricing-card {
    background: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 15px;
    border: 1px solid rgba(0, 180, 216, 0.2);
    text-align: center;
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-5px);
    border-color: var(--turquoise);
}

.pricing-card h3 {
    color: var(--turquoise);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    color: var(--green);
    margin: 1rem 0;
}

.pricing-features {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
    flex-grow: 1;
}

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

.pricing-features li:before {
    content: "✓ ";
    color: var(--green);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Contact Form */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--turquoise);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    background: var(--card-bg);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

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

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

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--electric-blue), var(--cyan));
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    display: none;
}

.form-message.success {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--green);
    color: var(--green);
}

.form-message.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid #ff0000;
    color: #ff6b6b;
}

/* Footer */
footer {
    background: var(--navy);
    padding: 2rem;
    text-align: center;
    border-top: 1px solid rgba(0, 180, 216, 0.2);
}

footer p {
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: rgba(10, 22, 40, 0.98);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3rem;
        transition: left 0.3s;
    }

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

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

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

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

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

    /* reduce large section padding on small screens */
    section {
        padding: 2.5rem 1rem;
    }
}

/* Utility Classes */
.hidden {
    display: none;
}