/* ----- RESET & VARIABLES ----- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* GitHub Dark Theme Colors */
    --github-dark: #0d1117;
    --github-dark-secondary: #161b22;
    --github-border: #30363d;
    --github-text: #c9d1d9;
    --github-text-secondary: #8b949e;
    --js-color: #f0db4f;
    --react-color: #61dafb;
    --css-color: #2965f1;
    --node-color: #68a063;
    --html-color: #e34c26;
    --accent-blue: #58a6ff;
    --accent-green: #238636;
    --accent-purple: #8957e5;
    --accent-orange: #f78166;
    --card-bg: #161b22;
    
    /* Functional variables (mapped to GitHub colors) */
    --bg-page: var(--github-dark);
    --surface: var(--github-dark-secondary);
    --sidebar-bg: var(--github-dark-secondary);
    --border-light: var(--github-border);
    --border-hover: var(--accent-blue);
    --text-main: var(--github-text);
    --text-muted: var(--github-text-secondary);
    --accent: var(--accent-blue);
    --accent-light: rgba(88, 166, 255, 0.15);
    --accent-green: #238636;
    --shadow-sm: 0 8px 20px -8px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 16px 28px -10px rgba(0, 70, 150, 0.4);
    
    /* Fixed measurements */
    --header-height: 70px;
    --footer-height: 95px;
    --sidebar-width: 270px;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    line-height: 1.5;
}

/* ----- HEADER ----- */
.main-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border-light);
    height: var(--header-height);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    box-shadow: var(--shadow-sm);
    z-index: 20;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-icon {
    display: none;
    font-size: 1.7rem;
    color: var(--text-main);
    background: none;
    border: 1px solid var(--border-light);
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    transition: all 0.2s;
}

.menu-icon:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.logo {
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    background: linear-gradient(145deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-dot {
    color: var(--accent);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
}

.header-actions .badge {
    background: var(--accent-light);
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-actions .badge i {
    color: var(--accent);
}

/* ----- MAIN CONTAINER (flex row, takes remaining height) ----- */
.main-container {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
    position: relative;
}

/* ----- SIDEBAR ----- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-light);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease;
    z-index: 15;
    box-shadow: 4px 0 12px -8px rgba(0,0,0,0.5);
}

.sidebar-inner {
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    scrollbar-width: thin;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-title i {
    color: var(--accent);
}

.category-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.category-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    text-align: left;
    font-size: 0.95rem;
}

.category-btn i {
    width: 22px;
    color: var(--text-muted);
}

.category-btn .count {
    background: var(--github-border);
    padding: 4px 10px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
}

.category-btn:hover {
    background: rgba(88, 166, 255, 0.1);
    border-color: var(--accent);
    transform: translateX(4px);
}

.category-btn.active {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.category-btn.active i {
    color: var(--accent);
}

.category-btn.active .count {
    background: var(--accent);
    color: var(--github-dark);
}

.add-project-btn {
    background: linear-gradient(90deg, var(--accent-green), #2ea043);
    color: white;
    border: none;
    border-radius: 40px;
    padding: 16px 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(35, 134, 54, 0.3);
}

.add-project-btn:hover {
    background: #2ea043;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(35, 134, 54, 0.4);
}

/* ----- OVERLAY (mobile) ----- */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(2px);
    z-index: 10;
    opacity: 0;
    transition: opacity 0.2s;
}

.overlay.active {
    display: block;
    opacity: 1;
}

/* ----- CONTENT AREA (right side, scrollable) ----- */
.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-page);
    height: 100%;
    overflow: hidden;
}

.search-wrapper {
    padding: 20px 24px 8px 24px;
    background: var(--bg-page);
    flex-shrink: 0;
}

.search-bar {
    background: var(--surface);
    border-radius: 56px;
    padding: 4px 20px;
    display: flex;
    align-items: center;
    border: 1px solid var(--border-light);
    transition: 0.2s;
    box-shadow: var(--shadow-sm);
}

.search-bar:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(88, 166, 255, 0.2);
}

.search-icon {
    color: var(--text-muted);
    font-size: 1rem;
    margin-right: 12px;
}

.search-bar input {
    border: none;
    background: transparent;
    padding: 14px 0;
    font-size: 1rem;
    width: 100%;
    outline: none;
    color: var(--text-main);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

/* ----- PROJECTS GRID (scrollable area) ----- */
.projects-container {
    padding: 16px 24px 24px 24px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    align-content: start;
    flex: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--github-border) var(--github-dark);
}

/* project card */
.project-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 20px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-hover);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.card-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
}

.category-badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 30px;
    background: var(--accent-light);
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border: 1px solid var(--border-light);
}

.category-badge.js { 
    background: rgba(240, 219, 79, 0.15); 
    color: var(--js-color);
    border-color: rgba(240, 219, 79, 0.3);
}
.category-badge.react { 
    background: rgba(97, 218, 251, 0.15); 
    color: var(--react-color);
    border-color: rgba(97, 218, 251, 0.3);
}
.category-badge.css { 
    background: rgba(41, 101, 241, 0.15); 
    color: var(--css-color);
    border-color: rgba(41, 101, 241, 0.3);
}
.category-badge.advanced { 
    background: rgba(227, 76, 38, 0.15); 
    color: var(--html-color);
    border-color: rgba(227, 76, 38, 0.3);
}
.category-badge.node { 
    background: rgba(104, 160, 99, 0.15); 
    color: var(--node-color);
    border-color: rgba(104, 160, 99, 0.3);
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 18px;
    line-height: 1.5;
    flex: 1;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-tag {
    background: var(--github-dark-secondary);
    padding: 5px 12px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-main);
    border: 1px solid var(--border-light);
}

.project-links {
    display: flex;
    gap: 10px;
    margin-top: 6px;
}

.project-link {
    flex: 1;
    text-decoration: none;
    padding: 10px 0;
    border-radius: 40px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: 0.2s;
    border: 1px solid transparent;
}

.live-link {
    background: rgba(35, 134, 54, 0.15);
    color: #2ea043;
    border-color: rgba(35, 134, 54, 0.3);
}

.live-link:hover {
    background: #2ea043;
    color: white;
}

.code-link {
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent);
    border-color: rgba(88, 166, 255, 0.3);
}

.code-link:hover {
    background: var(--accent);
    color: white;
}

.no-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px 20px;
    color: var(--text-muted);
    background: var(--surface);
    border-radius: 32px;
    border: 1px dashed var(--border-light);
}

/* ----- FOOTER (fixed) ----- */
.main-footer {
    background: var(--surface);
    border-top: 1px solid var(--border-light);
    height: var(--footer-height);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    padding: 0 28px;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.3);
    z-index: 15;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.footer-message .copyright {
    font-size: 0.8rem;
    margin-top: 4px;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--accent);
}

/* ----- MODAL (new project) ----- */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 23, 0.9);
    backdrop-filter: blur(4px);
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--surface);
    border-radius: 32px;
    max-width: 550px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 30px 50px rgba(0,0,0,0.5);
    border: 1px solid var(--border-light);
}

.modal-header {
    padding: 24px 28px 16px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    background: var(--surface);
    z-index: 5;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-main);
}

.modal-header h3 i {
    color: var(--accent);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2.2rem;
    line-height: 1;
    cursor: pointer;
    color: var(--text-muted);
    transition: 0.2s;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.modal-close:hover {
    color: var(--accent);
    background: var(--accent-light);
}

.modal-body {
    padding: 24px 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    gap: 18px;
}

.form-group.half {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-main);
}

.required {
    color: var(--html-color);
}

input, select, textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-light);
    border-radius: 20px;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    background: var(--github-dark);
    color: var(--text-main);
    transition: 0.2s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
    background: var(--github-dark-secondary);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

select option {
    background: var(--surface);
    color: var(--text-main);
}

.tech-input-group {
    display: flex;
    gap: 10px;
}

.add-tech-btn {
    padding: 0 24px;
    background: var(--accent-light);
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

.add-tech-btn:hover {
    background: var(--accent);
    color: white;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.tech-tag-item {
    background: var(--github-dark-secondary);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
    border: 1px solid var(--border-light);
}

.tech-tag-item i {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: color 0.2s;
}

.tech-tag-item i:hover {
    color: var(--html-color);
}

.modal-footer {
    padding: 20px 28px 28px 28px;
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    border-top: 1px solid var(--border-light);
    position: sticky;
    bottom: 0;
    background: var(--surface);
}

.btn {
    padding: 14px 30px;
    border-radius: 40px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: 0.2s;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--accent-green);
    color: white;
    box-shadow: 0 6px 14px rgba(35, 134, 54, 0.35);
}

.btn-primary:hover {
    background: #2ea043;
    transform: scale(1.02);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--github-dark-secondary);
    color: var(--accent);
    border-color: var(--accent);
}

/* ----- RESPONSIVE RULES ----- */
@media (max-width: 1024px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
}

@media (max-width: 768px) {
    .menu-icon {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar {
        position: absolute;
        top: 0;
        left: 0;
        height: 100%;
        transform: translateX(-100%);
        box-shadow: 6px 0 20px rgba(0,0,0,0.5);
        z-index: 30;
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .overlay.active {
        display: block;
    }

    .projects-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
        padding: 16px 16px 20px 16px;
    }

    .project-card {
        padding: 16px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .footer-links {
        gap: 20px;
        flex-wrap: wrap;
    }

    .main-footer {
        height: auto;
        min-height: var(--footer-height);
        padding: 16px 20px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 480px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .project-card {
        padding: 14px;
    }
    
    .card-header h3 {
        font-size: 1rem;
    }
    
    .category-badge {
        font-size: 0.65rem;
        padding: 4px 8px;
    }
    
    .tech-tag {
        font-size: 0.65rem;
        padding: 4px 8px;
    }
    
    .project-link {
        font-size: 0.7rem;
        padding: 8px 0;
    }
    
    .footer-links {
        gap: 16px;
    }
    
    .footer-link {
        font-size: 0.8rem;
    }
}

/* scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--github-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--github-border);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--github-text-secondary);
}