:root {
    --primary-color: #0a192f;
    --secondary-color: #112240;
    --accent-color: #64ffda;
    --text-primary: #ccd6f6;
    --text-secondary: #8892b0;
    --white: #ffffff;
    --font-main: 'Cairo', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-title::after {
    content: '';
    height: 1px;
    background-color: var(--secondary-color);
    flex-grow: 1;
    max-width: 300px;
}

section {
    padding: 5rem 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-primary:hover {
    background-color: rgba(100, 255, 218, 0.1);
}

.btn-outline {
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    margin-right: 1rem;
}

.btn-outline:hover {
    border-color: var(--accent-color);
}

/* Header */
header {
    height: 100px;
    /* Increased from 80px */
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

header .container {
    max-width: 100%;
    padding: 0 1.5rem 0 0;
    /* No left padding - logo flush to edge */
}

nav {
    display: flex;
    justify-content: flex-start;
    /* Logo stays on left */
    align-items: center;
    width: 100%;
    padding: 0 2rem;
    position: relative;
    /* For absolute positioning of centered nav */
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.logo a {
    display: flex;
    align-items: center;
}

.logo img {
    height: 90px;
    width: auto;
    transition: var(--transition);
    filter: brightness(1.2);
}

.logo img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 5px var(--accent-color));
}

.nav-links a {
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.btn-nav {
    border: 1px solid var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    color: var(--accent-color) !important;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--accent-color);
    cursor: pointer;
}

/* Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    /* Match new header height */
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--white);
}

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

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.code-block {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 8px;
    font-family: 'Fira Code', monospace;
    position: relative;
    box-shadow: 0 10px 30px -15px rgba(2, 12, 27, 0.7);
    color: var(--accent-color);
    direction: ltr;
    /* Keeping code LTR */
}

/* Services Section */
#services {
    background-color: var(--secondary-color);
}

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

.service-card {
    background-color: var(--primary-color);
    padding: 2rem;
    border-radius: 4px;
    transition: var(--transition);
}

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

.service-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

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

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

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

.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--secondary-color);
}

.placeholder-img {
    height: 250px;
    width: 100%;
    transition: var(--transition);
}

/* YouTube Video Embed */
.portfolio-video {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    background: #000;
    border-radius: 8px 8px 0 0;
}

.portfolio-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px 8px 0 0;
}

height: 6px;
background: rgba(255, 255, 255, 0.2);
border-radius: 3px;
cursor: pointer;
position: relative;
overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    border-radius: 3px;
    transition: width 0.1s linear;
}

.progress-bar:hover .progress-fill {
    box-shadow: 0 0 10px var(--accent-color);
}

.portfolio-info {
    padding: 1.5rem;
}

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

.portfolio-info p {
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr;
    /* Add image later if needed */
}

.features-list {
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.features-list i {
    color: var(--accent-color);
}

/* Contact Section */
#contact {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 3rem;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-item i {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
}

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

.contact-form {
    display: grid;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    background-color: var(--secondary-color);
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-main);
}

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

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    background-color: var(--secondary-color);
}

/* Responsive */
@media (max-width: 768px) {

    /* Reset nav for mobile */
    nav {
        justify-content: space-between;
        padding: 0 1rem;
    }

    /* Mobile Menu - Complete Reset */
    .nav-links {
        /* Reset desktop styles */
        position: fixed !important;
        left: 0 !important;
        right: 0 !important;
        transform: none !important;

        /* Mobile menu styling */
        top: 100px;
        width: 100%;
        background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        flex-direction: column;
        padding: 2rem 1rem;
        gap: 0;
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
        z-index: 999;
        border-top: 1px solid var(--accent-color);

        /* Hidden by default */
        display: none;
    }

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

    .nav-links li {
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(100, 255, 218, 0.1);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        font-size: 1.2rem;
        padding: 1rem;
        width: 100%;
        transition: all 0.3s ease;
    }

    .nav-links a:hover {
        background-color: rgba(100, 255, 218, 0.1);
        color: var(--accent-color);
    }

    .nav-links .btn-nav {
        margin-top: 1rem;
        display: inline-block;
        width: auto;
    }

    /* Hamburger styling */
    .hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        font-size: 1.5rem;
        color: var(--accent-color);
        padding: 0.5rem;
        z-index: 1001;
    }

    /* Logo size for mobile */
    .logo img {
        height: 50px;
    }

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

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

    .hero-text h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    /* Services grid mobile */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Portfolio grid mobile */
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    /* Contact wrapper mobile */
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Scroll Animations */
.hidden {
    opacity: 0;
    filter: blur(5px);
    transform: translateY(20px);
    transition: all 1s ease;
}

.visible {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

.delay-100 {
    transition-delay: 100ms;
}

.delay-200 {
    transition-delay: 200ms;
}

.delay-300 {
    transition-delay: 300ms;
}