/* ============================================
   Variables & Theme
   ============================================ */
:root {
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    --max-width: 680px;
}

/* Dark theme (default) */
:root, [data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #3fb950;
    --accent-hover: #56d364;
    --border: #30363d;
    --grid-color: rgba(48, 54, 61, 0.2);
}

/* Light theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8b949e;
    --accent: #1a7f37;
    --accent-hover: #238636;
    --border: #d0d7de;
    --grid-color: rgba(208, 215, 222, 0.3);
}

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

/* ============================================
   Accessibility - Skip Link
   ============================================ */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: var(--accent);
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 8px 8px;
    border: 1px solid var(--border);
    border-top: none;
    text-decoration: none;
    font-size: 0.85rem;
    z-index: 1000;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: none;
}

/* ============================================
   Accessibility - Focus States
   ============================================ */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Remove default focus for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================
   Theme Transition
   ============================================ */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, fill 0.3s ease, stroke 0.3s ease !important;
}

/* ============================================
   Base Styles
   ============================================ */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    background-color: var(--bg-primary);
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ============================================
   Banner
   ============================================ */
.banner {
    background: linear-gradient(90deg, #238636, #2ea043, #3fb950, #2ea043, #238636);
    background-size: 200% 100%;
    animation: gradient-shift 8s ease infinite;
    color: #ffffff;
    text-align: center;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@media (prefers-reduced-motion: reduce) {
    .banner {
        animation: none;
        background: linear-gradient(135deg, #238636 0%, #2ea043 50%, #238636 100%);
        background-size: 100% 100%;
    }
}

.banner a {
    color: #ffffff;
    text-decoration: underline;
    font-weight: 600;
}

.banner a:hover {
    opacity: 0.9;
}

/* ============================================
   Theme Toggle
   ============================================ */
.theme-toggle {
    position: fixed;
    top: 3rem;
    right: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

/* Show sun in dark mode, moon in light mode */
[data-theme="dark"] .sun-icon,
:root:not([data-theme]) .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon,
:root:not([data-theme]) .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

@media (max-width: 480px) {
    .container {
        padding: 2rem 1rem;
    }
}

/* ============================================
   Header
   ============================================ */
.header {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 2px solid var(--border);
    flex-shrink: 0;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.avatar:hover {
    transform: scale(1.08) rotate(3deg);
    border-color: var(--accent);
}

.header-content {
    flex: 1;
    min-width: 150px;
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0.25rem 0 0 0;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.social-links a {
    color: var(--text-secondary);
    transition: color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

.social-links svg,
.icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ============================================
   Divider
   ============================================ */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

/* ============================================
   Sections
   ============================================ */
.section {
    margin-bottom: 0;
}

.section h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section h2::before {
    content: "## ";
    color: var(--text-muted);
}

.section p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.section p:last-child {
    margin-bottom: 0;
}

.section strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================
   Entries (Experience, Projects)
   ============================================ */
.entry {
    margin-bottom: 1.5rem;
}

.entry:last-child {
    margin-bottom: 0;
}

.entry-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.entry h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.entry h3::before {
    content: "### ";
    color: var(--text-muted);
}

.date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.company {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.privacy-scribble {
    position: relative;
    display: inline-block;
    width: 7.8ch;
    height: 1em;
    color: transparent;
    user-select: none;
    pointer-events: none;
    white-space: nowrap;
    overflow: hidden;
    vertical-align: -0.08em;
    border-radius: 3px;
    background: color-mix(in srgb, var(--border) 46%, transparent);
}

.privacy-scribble::before {
    content: "";
    position: absolute;
    inset: -0.12em -0.2em -0.1em -0.22em;
    border-radius: 4px;
    background:
        repeating-linear-gradient(
            8deg,
            transparent 0 0.09em,
            color-mix(in srgb, var(--text-primary) 82%, var(--text-secondary) 18%) 0.09em 0.18em
        ),
        repeating-linear-gradient(
            -6deg,
            transparent 0 0.11em,
            color-mix(in srgb, var(--text-primary) 75%, var(--text-secondary) 25%) 0.11em 0.2em
        );
    opacity: 0.86;
    transform: rotate(-1.8deg) translateY(0.02em);
    filter: blur(0.12px);
    animation: privacy-scribble-wobble-a 1.6s ease-in-out infinite alternate;
}

.privacy-scribble::after {
    content: "";
    position: absolute;
    inset: -0.08em -0.18em -0.05em -0.18em;
    border-radius: 3px;
    background:
        repeating-linear-gradient(
            -14deg,
            transparent 0 0.1em,
            color-mix(in srgb, var(--text-primary) 88%, var(--text-secondary) 12%) 0.1em 0.16em
        );
    opacity: 0.65;
    transform: rotate(2.4deg) translateY(-0.01em);
    filter: blur(0.08px);
    pointer-events: none;
    animation: privacy-scribble-wobble-b 1.3s ease-in-out infinite alternate;
}

@keyframes privacy-scribble-wobble-a {
    0% { transform: rotate(-2.3deg) translateY(-0.02em) translateX(-0.02em); }
    100% { transform: rotate(-1.2deg) translateY(0.04em) translateX(0.03em); }
}

@keyframes privacy-scribble-wobble-b {
    0% { transform: rotate(2.8deg) translateY(0.01em) translateX(0.02em); }
    100% { transform: rotate(1.9deg) translateY(-0.03em) translateX(-0.03em); }
}

@media (prefers-reduced-motion: reduce) {
    .privacy-scribble::before,
    .privacy-scribble::after {
        animation: none;
    }
}

.entry ul {
    list-style: none;
    padding-left: 0;
}

.entry li {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.25rem;
}

.entry li::before {
    content: "-";
    position: absolute;
    left: 0.5rem;
    color: var(--text-muted);
}

.link-arrow {
    font-size: 0.8rem;
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease, letter-spacing 0.2s ease;
}

.link-arrow:hover {
    color: var(--accent-hover);
    letter-spacing: 0.5px;
}

/* Entry Links */
.entry-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.entry-link {
    font-size: 0.8rem;
    color: var(--accent);
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.entry-link:hover {
    color: var(--accent-hover);
    border-color: var(--accent);
    background-color: var(--bg-secondary);
    transform: translateX(3px);
}

/* ============================================
   Now List
   ============================================ */
.now-list {
    list-style: none;
    padding: 0;
}

.now-list li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.now-list li::before {
    content: ">";
    position: absolute;
    left: 0.25rem;
    color: var(--accent);
}

/* ============================================
   Skills
   ============================================ */
.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    transition: border-color 0.2s ease, color 0.2s ease;
}

.skill-tag:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

/* Skill tags with tooltips - remove dotted underline since they have borders */
.skill-tag.tooltip {
    border-bottom: none;
}

/* ============================================
   Link List
   ============================================ */
.link-list {
    list-style: none;
    padding: 0;
}

.link-list li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.link-list li::before {
    content: "-";
    position: absolute;
    left: 0.5rem;
    color: var(--text-muted);
}

.link-list a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.link-list a:hover {
    color: var(--accent-hover);
    padding-left: 4px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
}

/* ============================================
   Tooltips
   ============================================ */
.tooltip {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted var(--text-muted);
    cursor: help;
}

.tooltip-text {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    width: max-content;
    max-width: min(250px, calc(100vw - 24px));
    text-align: center;
    z-index: 100;
    white-space: normal;
    line-height: 1.4;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.tooltip-text.positioned {
    opacity: 1;
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: var(--arrow-left, 50%);
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--border) transparent transparent transparent;
}

.tooltip-text.visible {
    display: block;
}

/* ============================================
   Code-like elements
   ============================================ */
code, pre {
    font-family: var(--font-mono);
    background-color: var(--bg-secondary);
    border-radius: 4px;
    padding: 0.2rem 0.4rem;
    font-size: 0.85rem;
}

/* ============================================
   Selection
   ============================================ */
::selection {
    background-color: var(--accent);
    color: var(--bg-primary);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Toast Notification
   ============================================ */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    border: 1px solid var(--accent);
    border-radius: 8px;
    padding: 0.75rem 1.25rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
        color: black;
    }

    .theme-toggle,
    .social-links {
        display: none;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    .divider {
        border-color: #ccc;
    }

    .section h2::before,
    .entry h3::before {
        color: #666;
    }
}