/* CSS Custom Properties for Color Scheme */
:root {
    --color-primary: #000501;
    --color-secondary: #73ab84;
    --color-accent: #99d19c;
    --color-light: #79c7c5;
    --color-lightest: #ade1e5;

    /* Light mode colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #000501;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 5, 1, 0.1);
    --shadow-hover: rgba(0, 5, 1, 0.15);
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #000501;
        --bg-secondary: #1a1b1a;
        --bg-card: #2d3338;
        --text-primary: #ade1e5;
        --text-secondary: #99d19c;
        --text-muted: #79c7c5;
        --border-color: #4a5568;
        --shadow-color: rgba(173, 225, 229, 0.1);
        --shadow-hover: rgba(173, 225, 229, 0.15);
    }
}

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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition:
        background-color 0.3s ease,
        color 0.3s ease;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    text-align: center;
    padding: 60px 0 40px;
    background: linear-gradient(
        135deg,
        var(--color-secondary),
        var(--color-accent)
    );
    margin: -20px -20px 60px -20px;
    border-radius: 0 0 20px 20px;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

/* About Section */
.about-section {
    margin-bottom: 60px;
}

.about-content h2 {
    font-size: 2rem;
    color: var(--color-secondary);
    margin-bottom: 30px;
    text-align: center;
    position: relative;
}

.about-content h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(
        90deg,
        var(--color-secondary),
        var(--color-accent)
    );
    border-radius: 2px;
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

/* Projects Section */
.projects-section {
    margin-bottom: 60px;
    flex: 1;
}

.section-title {
    font-size: 2rem;
    color: var(--color-secondary);
    margin-bottom: 40px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(
        90deg,
        var(--color-secondary),
        var(--color-accent)
    );
    border-radius: 2px;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

/* Project Cards */
.project-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 4px 15px var(--shadow-color);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--color-secondary),
        var(--color-accent),
        var(--color-light)
    );
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.project-card:hover::before {
    transform: scaleX(1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.card-header h3 {
    font-size: 1.4rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin: 0;
}

.github-link {
    color: var(--text-muted);
    font-size: 1.3rem;
    transition: all 0.3s ease;
    padding: 8px;
    border-radius: 50%;
    background: var(--bg-secondary);
}

.github-link:hover {
    color: var(--color-secondary);
    background: var(--color-lightest);
    transform: scale(1.1);
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: linear-gradient(
        135deg,
        var(--color-light),
        var(--color-lightest)
    );
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.tag:hover {
    transform: scale(1.05);
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .header {
        padding: 40px 0 30px;
        margin: -15px -15px 40px -15px;
    }

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

    .subtitle {
        font-size: 1rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .project-card {
        padding: 20px;
    }

    .about-content h2,
    .section-title {
        font-size: 1.5rem;
    }

    .about-text p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header {
        margin: -15px -15px 30px -15px;
    }

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

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .github-link {
        align-self: flex-end;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles for Keyboard Navigation */
.project-card:focus,
.github-link:focus {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Print Styles */
@media print {
    .header {
        background: none !important;
        color: black !important;
    }

    .project-card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
    }

    .github-link {
        display: none;
    }
}