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

:root {
    --bg-primary:    #0d1117;
    --bg-secondary:  #161b22;
    --bg-tertiary:   #21262d;
    --text-primary:  #e6edf3;
    --text-secondary:#7d8590;
    --accent-blue:   #58a6ff;
    --accent-green:  #56d364;
    --accent-yellow: #f1e05a;
    --accent-red:    #f85149;
    --accent-orange: #ffa657;
    --border:        #30363d;
    --hover-bg:      #262c36;
    --sidebar-w:     220px;
    --nav-h:         48px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    display: flex;
    align-items: stretch;
}

.nav-tabs {
    display: flex;
    align-items: stretch;
    overflow-x: auto;
    scrollbar-width: none;
    flex: 1;
}
.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 14px;
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    white-space: nowrap;
    transition: background .2s, color .2s;
    flex-shrink: 0;
}
.nav-tab::before {
    content: '';
    width: 7px; height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.nav-tab[data-type="home"]::before       { background: var(--accent-blue); }
.nav-tab[data-type="about"]::before      { background: var(--accent-green); }
.nav-tab[data-type="experience"]::before { background: var(--accent-green); }
.nav-tab[data-type="projects"]::before   { background: var(--accent-yellow); }
.nav-tab[data-type="veille"]::before     { background: var(--accent-orange); }
.nav-tab[data-type="contact"]::before    { background: var(--accent-red); }

.nav-tab.active { background: var(--bg-primary); color: var(--text-primary); }
.nav-tab:hover  { background: var(--hover-bg);   color: var(--text-primary); }

/* hamburger — hidden on desktop */
.hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    padding: 0 14px;
    cursor: pointer;
    flex-shrink: 0;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.file-tree {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    width: var(--sidebar-w);
    height: calc(100vh - var(--nav-h));
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 12px 0;
    font-size: 12px;
    overflow-y: auto;
    z-index: 900;
}

.tree-item {
    padding: 3px 16px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    z-index: 850;
}
.sidebar-overlay.active { display: block; }

/* ============================================================
   LAYOUT — content shifted right by sidebar on desktop
   ============================================================ */
.hero,
.section,
.footer { margin-left: var(--sidebar-w); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-h) + 30px) 30px 30px;
}

.terminal {
    width: 100%;
    max-width: 800px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,.35);
}

.terminal-header {
    background: var(--bg-tertiary);
    padding: 10px 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}
.terminal-buttons { display: flex; gap: 7px; }
.terminal-button  { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.terminal-button.close    { background: var(--accent-red); }
.terminal-button.minimize { background: var(--accent-yellow); }
.terminal-button.maximize { background: var(--accent-green); }
.terminal-title { color: var(--text-secondary); font-size: 12px; }

.terminal-content {
    padding: 20px;
    font-size: 13px;
    overflow-x: auto;
}

.command-line {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}
.prompt  { color: var(--accent-green); flex-shrink: 0; }
.command { color: var(--accent-blue); word-break: break-all; }

.output {
    padding-left: 16px;
    margin-bottom: 16px;
    overflow-x: auto;
}

.hero-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 6px;
}
.hero-subtitle {
    color: var(--text-secondary);
    font-size: clamp(11px, 2vw, 14px);
    margin-bottom: 16px;
}

.typing-animation {
    border-right: 2px solid var(--accent-green);
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { border-color: transparent; } }

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
    padding: calc(var(--nav-h) + 30px) 30px 40px;
    max-width: 1100px;
}

/* ============================================================
   CODE EDITOR BLOCK
   ============================================================ */
.code-editor {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 28px;
}

.code-header {
    background: var(--bg-tertiary);
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
}
.code-title {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
}
.code-title::before { content: '⚡'; }

.code-content {
    display: flex;
    font-size: 13px;
    overflow: hidden;
}

/* Line numbers — filled by JS */
.line-numbers {
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border);
    padding: 14px 10px;
    color: var(--text-secondary);
    font-size: 12px;
    text-align: right;
    user-select: none;
    flex-shrink: 0;
    min-width: 44px;
    line-height: 1.6;
}

.code-text {
    padding: 14px 16px;
    flex: 1;
    overflow-x: auto;
    min-width: 0;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

/* ============================================================
   SYNTAX COLOURS
   ============================================================ */
.keyword  { color: var(--accent-red); }
.string   { color: var(--accent-green); }
.comment  { color: var(--text-secondary); font-style: italic; }
.function { color: var(--accent-blue); }
.variable { color: var(--accent-orange); }
.number   { color: var(--accent-yellow); }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: transform .3s, box-shadow .3s, border-color .3s;
}
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(88,166,255,.15);
    border-color: var(--accent-blue);
}

.project-header {
    background: var(--bg-tertiary);
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
}
.project-name   { font-weight: 500; font-size: 13px; }
.project-status {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    background: rgba(88,166,255,.1);
    color: var(--accent-blue);
    border: 1px solid rgba(88,166,255,.3);
    white-space: nowrap;
}
.project-code {
    padding: 14px;
    font-size: 12px;
    line-height: 1.6;
    overflow-x: auto;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-terminal { max-width: 600px; margin: 0 auto; }
.contact-commands { display: grid; gap: 12px; margin-top: 18px; }
.contact-command {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 12px;
    transition: background .2s, border-color .2s;
    overflow: hidden;
}
.contact-command:hover { background: var(--hover-bg); border-color: var(--accent-blue); }
.contact-command .prompt  { flex-shrink: 0; }
.contact-command .command { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================
   VEILLE
   ============================================================ */
#veille-list { list-style: none; }
#veille-list li { margin: 10px 0; font-size: 12px; word-break: break-word; line-height: 1.6; }
#veille-list a { color: var(--accent-blue); text-decoration: none; }
#veille-list a:hover { text-decoration: underline; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    padding: 26px 20px;
    text-align: center;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 12px;
}

/* ============================================================
   SCROLLBARS
   ============================================================ */
::-webkit-scrollbar        { width: 6px; height: 6px; }
::-webkit-scrollbar-track  { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb  { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ============================================================
   RESPONSIVE ≤ 900px — sidebar off-canvas, hamburger visible
   ============================================================ */
@media (max-width: 900px) {
    .hamburger { display: flex; }

    .file-tree {
        transform: translateX(-100%);
        transition: transform .28s ease;
        box-shadow: 4px 0 20px rgba(0,0,0,.4);
    }
    .file-tree.open { transform: translateX(0); }

    /* remove sidebar indent */
    .hero,
    .section,
    .footer { margin-left: 0; }

    .hero    { padding: calc(var(--nav-h) + 20px) 16px 20px; }
    .section { padding: calc(var(--nav-h) + 20px) 16px 28px; }

    /* code block: stack vertically */
    .code-content { flex-direction: column; }
    .line-numbers {
        border-right: none;
        border-bottom: 1px solid var(--border);
        text-align: left;
        padding: 8px 14px;
        display: flex;
        flex-wrap: wrap;
        column-gap: 14px;
    }

    .projects-grid { grid-template-columns: 1fr; }
    .nav-tab { padding: 0 10px; font-size: 11px; }
}

/* ============================================================
   RESPONSIVE ≤ 480px
   ============================================================ */
@media (max-width: 480px) {
    .nav-tab          { padding: 0 8px; font-size: 10px; }
    .terminal-content { padding: 12px; font-size: 11px; }
    .code-text        { font-size: 11px; }
    .project-code     { font-size: 11px; }
    .contact-command  { font-size: 11px; }
    .section          { padding: calc(var(--nav-h) + 14px) 12px 22px; }
}