:root {
    --primary: #0f2056;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --success: #15803d;
    --success-100: #dcfce7;
    --accent: #7c3aed;
    --accent-100: #ede9fe;
    --secondary: #6b7280;
    --secondary-100: #e5e7eb;
    --warning: #d97706;
    --warning-100: #fef3c7;
    --text-secondary: #4b5563;
    --gray: #e5e7eb;
    --background: #ffffff;
    --text-primary: #111827;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 0.75rem;
}

/* Breadcrumb Navigation */
.breadcrumb {
    padding: 2rem 0 1.5rem;
    margin-bottom: 1.5rem;
    background-color: var(--background);
}

.breadcrumb nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.breadcrumb svg {
    width: 0.875rem;
    height: 0.875rem;
}

.breadcrumb span {
    color: var(--primary);
    font-weight: 500;
}

/* Main Content */
.main-content {
    padding-bottom: 3rem;
}

.grid-container {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
    .grid-container {
        grid-template-columns: 320px minmax(0, 1fr);
    }
}

.content-container {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

@media (min-width: 640px) {
    .content-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

@media (min-width: 1024px) {
    .content-container {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

/* Sidebar */
.sidebar-container {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
}

.sidebar-content {
    position: static;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 1024px) {
    .sidebar-container {
        max-width: 300px;
        margin-left: 0.5cm;
    }

    .sidebar-content {
        position: sticky;
        top: 4rem;
    }
}

/* Project Hero Image */
.hero-image-container {
    aspect-ratio: 16 / 9;
    background: linear-gradient(to bottom right, var(--primary-100), var(--primary-200));
    border-radius: 0.375rem;
    overflow: hidden;
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Project Title & Info */
.project-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.project-description {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Tech Stack */
.tech-stack {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tech-stack-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.tech-tag.react,
.tech-tag.redux {
    background-color: var(--primary-100);
    color: var(--primary);
}

.tech-tag.node,
.tech-tag.socket {
    background-color: var(--success-100);
    color: var(--success);
}

.tech-tag.mongodb {
    background-color: var(--accent-100);
    color: var(--accent);
}

.tech-tag.express {
    background-color: var(--secondary-100);
    color: var(--secondary);
}

.tech-tag.stripe {
    background-color: var(--warning-100);
    color: var(--warning);
}

.tech-tag.tailwind-css {
    color: #38B2AC; 
    background-color: var(--secondary-100); 
}

.tech-tag.python {
    color: #3776AB;
    background-color: var(--primary-100); 
}

.tech-tag.streamlit {
    color: #FF4B4B;
    background-color: var(--secondary-100); 
}

.tech-tag.openai {
    color: #10A37F;
    background-color: var(--success-100); 
}

.tech-tag.mailjet {
    color: #0072C6;
    background-color: var(--primary-200); 
}

.tech-tag.pandas {
    color: #2E7D32;
    background-color: var(--success-100); 
}

.tech-tag.opencv {
    color: #B22222;
    background-color: var(--warning-100);
}

.tech-tag.numpy {
    color: #4D77CF;
    background-color: var(--primary-100); 
}

.tech-tag.matplotlib {
    color: #11557C;
    background-color: var(--secondary-100); 
}

.tech-tag.tensorflow {
    color: #FF6F00;
    background-color: var(--warning-100); 
}

.tech-tag.githubapi {
    color: #FFFFFF;
    background-color: #24292E;
}

.tech-tag.axios {
    color: #5A29E4;
    background-color: #F7F7F7;
}

.tech-tag.django {
    color: #092E20;
    background-color: #E6F3E6;
}

.tech-tag.html {
    color: #E34F26;
    background-color: #F9E6E2;
}

.tech-tag.css {
    color: #264DE4;
    background-color: #E6ECF9;
}

.tech-tag.javascript {
    color: #F7DF1E;
    background-color: #FFF9E6;
}

.tech-tag.bootstrap {
    color:  #7952B3;
    background-color: #F5F0FA;
}

.tech-tag.mysql {
    color: #00758F;
    background-color: #E6F5FA;
}

.tech-tag.spring-boot {
    color: #6DB33F; 
    background-color: var(--secondary-100); 
}

.tech-tag.microservices {
    color: #6200EA; 
    background-color: var(--accent-100); 
}

/* Project Links */
.project-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.25rem;
    text-decoration: none;
    transition: background-color 0.2s;
}

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

.btn-primary:hover {
    background-color: #1e3a8a;
}

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

.btn-secondary:hover {
    background-color: #4b5563;
}

.btn-icon {
    width: 1rem;
    height: 1rem;
    margin-right: 0.5rem;
}

/* Project Stats */
.stats-card {
    padding: 1rem;
    background-color: var(--gray);
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

.stats-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.stats-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stats-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stats-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.stats-value {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.875rem;
}

.status-badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--success-100);
    color: var(--success);
    border-radius: 9999px;
}

/* Content Area */
.content-area {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.overview-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.prose p {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
}

.overview-text {
    max-height: 6rem;
    overflow: hidden;
    position: relative;
}

.read-more {
    display: inline-block;
    color: var(--primary);
    cursor: pointer;
    margin-top: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
}

.overview-text.expanded {
    max-height: none;
}

.challenge-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .challenge-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

.card,
.technical-card {
    background-color: var(--gray);
    padding: 1rem;
    border-radius: 0.375rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.technical-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .technical-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.technical-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
    font-size: 1rem;
}

.technical-list svg {
    width: 0.5rem;
    height: 0.5rem;
    margin-top: 0.25rem;
}

.gallery-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.gallery-item {
    aspect-ratio: 16 / 9;
    border-radius: 0.375rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.gallery-item img:hover {
    transform: scale(1.05);
}

/* FAQ Section */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
}

.faq-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-card {
    border-radius: 0.375rem;
    border: 1px solid rgb(226 232 240);
    background-color: #F7FAFC;
    padding: 0.75rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0, 0, 0.2, 1);
}

.faq-card:hover {
    box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

.faq-toggle {
    width: 100%;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
}

.faq-toggle:focus {
    outline: none;
}

.faq-question {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.faq-toggle svg {
    width: 1rem;
    height: 1rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.faq-content {
    display: none;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid #d1d5db;
}

.faq-content.show {
    display: block;
}

.faq-content p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.faq-content ul {
    list-style: disc;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.faq-grid {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.faq-content h4 {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.faq-content ul.text-sm {
    font-size: 0.875rem;
}

.faq-subcontent {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.faq-subcontent p.text-sm {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Navigation Buttons */
.navigation-buttons {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 5rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

@media (min-width: 640px) {
    .navigation-buttons {
        flex-direction: row;
        justify-content: space-between;
        gap: 3rem;
    }
}

.navigation-buttons .btn.btn-secondary:first-child {
    margin-left: 0;
}

.navigation-buttons .btn.btn-secondary:last-child {
    align-self: auto;
}

/* Responsive Design */
@media (max-width: 640px) {
    .breadcrumb {
        padding: 1.5rem 0 1rem;
    }

    .main-content {
        padding-bottom: 2rem;
    }

    .grid-container {
        gap: 1.5rem;
    }

    .project-title {
        font-size: 1.125rem;
    }

    .tech-stack-title {
        font-size: 0.875rem;
    }

    .stats-title {
        font-size: 0.875rem;
    }

    .faq-title {
        font-size: 1rem;
    }

    .faq-question {
        font-size: 0.875rem;
    }
}

@media (min-width: 1024px) {
    .grid-container {
        grid-template-columns: 360px minmax(0, 1fr);
    }

    .challenge-grid,
    .technical-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .project-title {
        font-size: 1.5rem;
    }

    .tech-stack-title {
        font-size: 1.125rem;
    }

    .stats-title {
        font-size: 1.125rem;
    }

    .faq-title {
        font-size: 1.3rem;
    }
}

/* Footer */

.footer {
    margin-bottom: 1cm;
}

.footer>div {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    position: relative;
    margin: 0px 30px 0px 30px;
    align-items: center;
}

.container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.text-gray-700 {
    color: #4A5568;
}

.button-2 {
    padding: 15px 20px;
    background-color: black;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 10px;
    margin-left: auto;
}

code {
    color: #f0f5f6;
    background-color: #0c0c0c;
    padding: 2px 4px;
    border-radius: 3px;
}