:root {
    --bg: #1e1e1e;
    --bg-cell: #2b2b2b;
    --border: #3c3c3c;
    --text: #e6e6e6;
    --muted: #a0a0a0;
    --accent: #7aa2f7;
    --accent-soft: rgba(122, 162, 247, 0.16);
    --danger: #f7768e;
    --success: #9ece6a;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    background-color: var(--bg);
    color: var(--text);
}

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

a:hover {
    text-decoration: underline;
}

.notebook-wrapper {
    min-height: 100vh;
}

/* Header / Toolbar */

.notebook-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    background: #151515cc;
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    z-index: 20;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9rem;
}

.kernel-circle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(158, 206, 106, 0.35);
}

.file-name {
    color: var(--text);
}

.header-center {
    display: flex;
    gap: 4px;
}

.toolbar-item {
    border: none;
    background: transparent;
    color: var(--muted);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.toolbar-item:hover {
    background: var(--accent-soft);
    color: var(--text);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.kernel-status-label {
    color: var(--muted);
}

.kernel-status-indicator {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    border: 1px solid var(--border);
}

.kernel-idle {
    background: var(--success);
}

.kernel-busy {
    background: var(--danger);
    animation: pulse 1s infinite alternate;
}

.kernel-status-text {
    color: var(--muted);
}

@keyframes pulse {
    from {
        opacity: 0.6;
    }
    to {
        opacity: 1;
    }
}

/* Boot Screen */

.boot-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 52px;
}

.boot-terminal {
    width: min(620px, 100% - 32px);
    background: radial-gradient(circle at top left, #292929, #151515);
    border-radius: 8px;
    padding: 18px 20px 20px;
    border: 1px solid var(--border);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.86rem;
}

.boot-line {
    color: var(--muted);
    margin-bottom: 6px;
    white-space: pre-wrap;
}

.boot-line::before {
    content: ">>> ";
    color: var(--accent);
}

.boot-line.active::after {
    content: "▋";
    margin-left: 2px;
    animation: caret 0.8s infinite;
}

@keyframes caret {
    0%,
    50% {
        opacity: 1;
    }
    51%,
    100% {
        opacity: 0;
    }
}

.hidden {
    display: none;
}

/* Notebook main */

.notebook-main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 72px 16px 48px;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.cell-section {
    margin-bottom: 18px;
}

.cell-row {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 10px;
}

.prompt {
    text-align: right;
    color: var(--accent);
    padding-top: 7px;
}

.out-prompt {
    color: var(--success);
}

.code-cell,
.output-cell {
    background-color: var(--bg-cell);
    border-radius: 4px;
    border: 1px solid var(--border);
    padding: 8px 12px;
}

.code-cell {
    color: #dcdcdc;
    position: relative;
    overflow-x: auto;
}

.code-fn {
    color: var(--accent);
}

.paren {
    color: #c0caf5;
}

.str {
    color: #9ece6a;
}

.output-row {
    margin-top: 4px;
}

.output-cell {
    color: var(--text);
}

.home-layout {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    align-items: center;
}

.profile-picture {
    width: 110px;
    height: 110px;
    border-radius: 12px;
    object-fit: cover;
    border: 2px solid var(--accent);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
}

.name {
    margin: 0 0 4px;
    font-size: 1.3rem;
}

.role {
    margin: 0 0 4px;
    color: var(--accent);
}

.education {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 0.9rem;
}

.summary-text {
    margin: 0 0 10px;
    font-size: 0.9rem;
    color: var(--text);
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.contact-links a {
    font-size: 0.8rem;
    padding: 2px 10px;
    border-radius: 999px;
    border: 1px solid rgba(122, 162, 247, 0.6);
    background: rgba(17, 24, 39, 0.9);
}

.skills-block {
    border-top: 1px dashed var(--border);
    padding-top: 8px;
}

.skills-title {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 6px;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.skills-tags span {
    border-radius: 999px;
    padding: 2px 10px;
    font-size: 0.8rem;
    background: var(--accent-soft);
    border: 1px solid rgba(122, 162, 247, 0.4);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    font-size: 0.85rem;
}

.skills-group {
    padding: 8px 10px;
    border-radius: 4px;
    border: 1px dashed var(--border);
    background: rgba(17, 24, 39, 0.9);
}

.skills-group-title {
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 4px;
}

.skills-group ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.skills-group li {
    color: var(--text);
    margin-bottom: 2px;
}

.loading-inline {
    color: var(--muted);
    font-style: italic;
}

/* Projects */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 10px;
}

.project-card {
    background: #232323;
    border-radius: 4px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
    overflow: hidden;
}

.project-title {
    font-size: 0.95rem;
    color: var(--accent);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--muted);
}

.project-description {
    font-size: 0.85rem;
    color: var(--text);
    margin-top: 4px;
}

.project-links {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8rem;
}

.project-links a {
    background: #1e293bcc;
    border-radius: 4px;
    padding: 2px 8px;
    border: 1px solid rgba(148, 163, 184, 0.5);
}

.project-stars {
    position: absolute;
    top: 6px;
    right: 8px;
    font-size: 0.75rem;
    color: #e0af68;
}

/* Certificates */

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.cert-card {
    background: #2b2b2b;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.cert-card img {
    width: 100%;
    border-radius: 6px;
    margin-bottom: 10px;
}

.cert-card a {
    color: #7aa2f7;
    text-decoration: none;
}

.education-section {
    background: #2b2b2b;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
    margin-top: 20px;
    color: #fff;
}

/* Git stats */

.git-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    font-size: 0.85rem;
}

.git-stat-item {
    padding: 8px 10px;
    border-radius: 4px;
    border: 1px dashed var(--border);
    background: #222222;
}

.git-stat-label {
    color: var(--muted);
    margin-bottom: 2px;
}

.git-stat-value {
    color: var(--text);
}

/* Contact */

.contact-output .label {
    color: var(--muted);
    margin-right: 6px;
}

.contact-output p {
    margin: 0 0 4px;
    font-size: 0.9rem;
}

.contact-form {
    margin-top: 10px;
    border-top: 1px dashed var(--border);
    padding-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.85rem;
}

.form-row label {
    color: var(--muted);
}

.form-row input,
.form-row textarea {
    background: #111111;
    border-radius: 4px;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 8px;
    font-family: inherit;
    font-size: 0.85rem;
}

.form-row textarea {
    resize: vertical;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.form-actions button {
    border-radius: 4px;
    border: 1px solid rgba(122, 162, 247, 0.8);
    background: var(--accent-soft);
    color: var(--text);
    padding: 4px 12px;
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.form-actions button:hover {
    background: rgba(37, 99, 235, 0.3);
}

.contact-status {
    font-size: 0.8rem;
    color: var(--muted);
}

.contact-status.success {
    color: var(--success);
}

.contact-status.error {
    color: var(--danger);
}

/* Command input */

.command-section {
    margin-top: 24px;
}

.command-input-wrapper {
    background: #111111;
    border-radius: 4px;
    border: 1px solid var(--border);
}

#command-input {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text);
    padding: 6px 10px;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9rem;
}

#command-input::placeholder {
    color: #555555;
}

/* Transitions */

.cell-section {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.cell-section.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .certificates-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .notebook-header {
        padding-inline: 10px;
        gap: 8px;
    }

    .header-center {
        display: none;
    }

    .cell-row {
        grid-template-columns: 64px minmax(0, 1fr);
    }

    .home-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .certificates-grid {
        grid-template-columns: 1fr;
    }
}