@font-face {
    font-family: 'Axis Std';
    src: local('Axis Std Light'),
         url('/fonts/AxisStd-Light.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Andale Mono';
    src: local('Andale Mono'),
         url('/fonts/AndaleMono.woff2') format('woff2');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Fira Code';
    src: url('https://cdn.jsdelivr.net/npm/firacode@6.2.0/distr/woff2/FiraCode-Light.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/npm/firacode@6.2.0/distr/woff/FiraCode-Light.woff') format('woff');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

::selection {
    background: white;
    color: black;
}

::-moz-selection {
    background: white;
    color: black;
}

:root {
    --text-primary: #F2F2F2;
    --text-body: #BEBEBE;
    --text-secondary: #888888;
    --text-muted: #767676;
    --text-inactive: #555555;
}

body {
    font-family: 'Axis Std', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: black;
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

h1 {
    font-family: 'Andale Mono', monospace !important;
    font-size: 0.9rem !important;
    line-height: 1.4 !important;
    word-spacing: -0.4em;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 2rem !important;
    margin-top: 0;
    color: var(--text-secondary) !important;
}

#back-button {
    position: relative;
    margin-right: 0.25rem;
    top: -0.0625rem;
}

#back-button::before {
    content: 'Home';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.85rem;
    padding: 0.35rem 0.65rem;
    background-color: #1a1a1a;
    border: 1px solid #444;
    border-radius: 4px;
    font-family: 'Axis Std', sans-serif;
    font-size: 0.75rem;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 20;
}

.breadcrumb-link {
    color: inherit !important;
    text-decoration: none !important;
    transition: color 0.2s ease !important;
    padding: 0 !important;
    display: inline-block !important;
    white-space: nowrap !important;
}

.breadcrumb-link::after {
    display: none !important;
}

.breadcrumb-link:hover {
    color: #AAAAAA !important;
}

#back-button::after {
    content: '';
    position: absolute;
    top: -0.85rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #444;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 21;
}

.nowrap {
    white-space: nowrap !important;
}

#back-button:hover::before,
#back-button:hover::after {
    opacity: 1;
}

/* Header - 80% dynamic viewport height */
.header-media-wrapper {
    position: relative;
    width: 100%;
    height: 75dvh;
    height: 75svh; /* fallback for browsers without dvh */
    margin: 0 0 0.5rem 0;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-placeholder {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

#attractor-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Attractor info overlay */
.attractor-info {
    position: absolute;
    top: 2rem;
    left: 2rem;
    color: rgba(255, 255, 255, 0.85);
    pointer-events: none;
    z-index: 10;
    max-width: 340px;
}

.attractor-info .attractor-title {
    margin: 0 0 0.75rem 0;
    font-family: 'Andale Mono', monospace;
    font-size: 0.9rem;
    word-spacing: -0.25em;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #fff;
}

.attractor-info p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0.5rem 0;
    line-height: 1.5;
}

.attractor-info .math {
    color: #00ffff;
}

.attractor-info .attractor-equations {
    margin-top: 0.75rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.7);
}

.attractor-info .attractor-equations .katex {
    font-size: 1.25em;
}

.attractor-info .attractor-hint {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 1rem;
}

/* Show desktop hint, hide mobile hint by default */
.attractor-info .attractor-hint-mobile {
    display: none;
}

.header-image,
.header-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 4px;
    transition: opacity 0.5s ease-in-out;
}

.header-image.placeholder {
    position: absolute;
    top: 0;
    left: 0;
    opacity: 1;
    z-index: 1;
}

.header-video {
    position: relative;
    opacity: 0;
    z-index: 2;
}

.header-video.loaded {
    opacity: 1;
}

.header-image.placeholder.fade-out {
    opacity: 0;
}

.content-image {
    width: 100%;
    height: auto;
    display: block;
    margin: 2rem 0 0.5rem 0;
    border-radius: 4px;
}

.image-caption {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin: 0 0 2.5rem 0;
    font-style: italic;
}

.section-divider {
    text-align: center;
    color: var(--text-primary);
    margin: 2rem 0;
    letter-spacing: 0.5em;
}

h2 {
    font-family: 'Axis Std', sans-serif;
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1.6;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h3 {
    font-family: 'Axis Std', sans-serif;
    font-size: 1.2rem;
    font-weight: 300;
    line-height: 1.4;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
    color: #C0C0C0;
}

h4 {
    font-family: 'Axis Std', sans-serif;
    font-size: 0.9rem;
    font-weight: 300;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

h2:first-of-type {
    margin-top: 2rem;
}

h2 + p,
h3 + p {
    margin-top: 0;
}

.container {
    max-width: 38rem;
    margin: 0 auto;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.fonts-loaded .container {
    opacity: 1;
}

p {
    font-family: 'Axis Std', sans-serif;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    margin-top: 0;
    letter-spacing: 0.01em;
    color: var(--text-body);
}

p strong {
    color: var(--text-primary);
}

ul, ol {
    font-family: 'Axis Std', sans-serif;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    margin-top: 0;
    padding-left: 1.5rem;
    color: var(--text-body);
}

ul {
    list-style-type: disc;
}

ol {
    list-style-type: decimal;
}

li {
    margin-bottom: 0.5rem;
    letter-spacing: 0.01em;
}

li ul, li ol {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

hr {
    border: none;
    border-top: 1px solid #333;
    margin: 3rem 0;
}

code {
    font-family: 'Fira Code', 'Andale Mono', monospace;
    font-size: 0.85em;
    background-color: #1a1a1a;
    padding: 0.15em 0.4em;
    border-radius: 3px;
    color: #e0e0e0;
}

.code-block-wrapper {
    position: relative;
    margin: 1.5rem 0;
}

pre {
    font-family: 'Fira Code', 'Andale Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    background-color: #1a1a1a;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 1.5rem;
    margin: 0;
    overflow-x: auto;
    color: #e0e0e0;
}

.copy-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background-color: #2a2a2a;
    border: 1px solid #444;
    border-radius: 4px;
    padding: 0.5rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s, background-color 0.2s;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.code-block-wrapper:hover .copy-button {
    opacity: 1;
}

.copy-button:hover {
    background-color: #3a3a3a;
}

.copy-button:active {
    background-color: #4a4a4a;
}

.copy-button svg {
    display: block;
    width: 18px;
    height: 18px;
}

.copy-button::before {
    content: 'Copy';
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 0.5rem;
    padding: 0.35rem 0.65rem;
    background-color: #1a1a1a;
    border: 1px solid #444;
    border-radius: 4px;
    font-family: 'Axis Std', sans-serif;
    font-size: 0.75rem;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 20;
}

.copy-button::after {
    content: '';
    position: absolute;
    bottom: 100%;
    right: 0.75rem;
    margin-bottom: 0.25rem;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #444;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 21;
}

.copy-button:hover::before,
.copy-button:hover::after {
    opacity: 1;
}

.copy-button.copied {
    opacity: 1;
    background-color: #1a4a1a;
    border-color: #2a6a2a;
}

.copy-button.copied svg {
    fill: #4ade80;
}

.copy-button.copied::before {
    content: 'Copied!';
    background-color: #1a4a1a;
    border-color: #2a6a2a;
    color: #4ade80;
    opacity: 1;
}

.copy-button.copied::after {
    border-top-color: #2a6a2a;
    opacity: 1;
}

pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
    color: inherit;
    display: block;
}

/* Scrollable code block */
.code-block-wrapper.code-block-scrollable pre {
    max-height: 280px;
    overflow-y: auto;
}

p + .code-block-wrapper,
ul + .code-block-wrapper,
ol + .code-block-wrapper,
.code-block-wrapper + p,
.code-block-wrapper + ul,
.code-block-wrapper + ol {
    margin-top: 1.5rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.85rem;
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #333;
}

th {
    color: var(--text-primary);
    font-weight: 300;
    background-color: #1a1a1a;
}

td {
    color: var(--text-body);
}

tr:last-child td {
    border-bottom: none;
}


a {
    color: var(--text-primary);
    text-decoration: none;
    position: relative;
    display: inline;
    padding: 0 0.1em;
    transition: color 0.3s;
    z-index: 1;
    white-space: nowrap;
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: white;
    transition: height 0.2s, bottom 0.2s;
    z-index: -1;
}

@media (hover: hover) {
    a:hover {
        color: black;
    }

    a:hover::after {
        height: calc(100% + 4px);
        bottom: -2px;
        background-color: white;
    }
}

.contact-links {
    font-size: 0.75rem;
    margin-top: 5rem;
}

.contact-links a {
    margin-right: .75rem;
}

.contact-links a:last-child {
    margin-right: 0;
}


footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 0;
    margin-top: 4rem;
}

a.logo {
    display: inline-block;
    margin-bottom: 0.5rem;
    width: 27px;
    height: 30px;
    position: relative;
    cursor: pointer;
    padding: 0;
}

a.logo::after {
    display: none;
}

a.logo:hover {
    color: inherit;
}

a.logo .logo-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.85rem;
    padding: 0.35rem 0.65rem;
    background-color: #1a1a1a;
    border: 1px solid #444;
    border-radius: 4px;
    font-family: 'Axis Std', sans-serif;
    font-size: 0.75rem;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 20;
}

a.logo .logo-tooltip::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid #444;
}

a.logo:hover .logo-tooltip {
    opacity: 1;
}

.logo svg {
    width: 100%;
    height: 100%;
    display: block;
}

.logo .mb-path {
    fill: #FFFFFF;
}

.footer-text {
    font-size: 0.65rem;
    line-height: 1.5;
    color: var(--text-muted);
    text-align: center;
    margin-top: 0.5rem;
}

/* Meta info block */
.meta-info {
    margin: 2rem 0;
    padding: 1.25rem 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid #333;
    border-radius: 6px;
    font-size: 0.85rem;
}

.meta-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

.meta-info strong {
    color: var(--text-body);
}

/* Equation block - KaTeX styling */
.equation-block {
    margin: 2rem 0;
    padding: 1.75rem 2rem;
    border-radius: 8px;
    overflow-x: auto;
}

.equation-block .katex-display {
    margin: 0;
    padding: 0;
}

.equation-block .katex-display > .katex {
    text-align: center;
}

/* KaTeX global overrides for dark theme */
.katex {
    font-size: 1.15em;
    color: var(--text-primary);
}

.katex-display {
    margin: 1.5rem 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.katex-display > .katex {
    white-space: normal;
}

/* Inline math styling */
.katex-inline,
p .katex,
li .katex {
    font-size: 1.05em;
    padding: 0 0.1em;
}

/* Matrix styling */
.katex .mord.mtight,
.katex .minner {
    color: var(--text-primary);
}

/* Operator styling */
.katex .mop {
    color: #a0a0a0;
}

/* Better spacing for aligned equations */
.katex .base {
    margin-top: 0.1em;
    margin-bottom: 0.1em;
}

/* Fraction styling */
.katex .frac-line {
    border-bottom-color: var(--text-secondary);
}

/* Matrix brackets */
.katex .delimsizing {
    color: var(--text-secondary);
}

/* Blockquotes */
blockquote {
    margin: 1.5rem 0;
    padding: 1.25rem 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-left: 3px solid rgba(255, 255, 255, 0.2);
    border-radius: 0 6px 6px 0;
}

blockquote p {
    margin: 0;
    color: var(--text-body);
}

/* Wider media elements on desktop */
@media (min-width: 769px) {
    .header-media-wrapper {
        width: 75vw;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        margin-top: 0;
        margin-bottom: 0.5rem;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }

    .content-image {
        width: calc(100% + 6rem);
        margin-left: -3rem;
        margin-right: -3rem;
        margin-top: 2rem;
        margin-bottom: 0.5rem;
    }
}

@media (min-width: 590px) {
    .nowrap-desktop {
        white-space: nowrap;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Full-width header on mobile */
    .header-media-wrapper {
        width: calc(100% + 3rem);
        margin-left: -1.5rem;
        margin-right: -1.5rem;
        border-radius: 0;
    }

    .attractor-info {
        top: 1.5rem;
        left: 1.5rem;
        max-width: 280px;
    }

    .attractor-info .attractor-title {
        font-size: 0.8rem;
        letter-spacing: 1.5px;
    }

    .attractor-info p {
        font-size: 0.75rem;
    }

    .attractor-info .attractor-equations .katex {
        font-size: 1.1em;
    }

    /* Show mobile hint, hide desktop hint */
    .attractor-info .attractor-hint-desktop {
        display: none;
    }

    .attractor-info .attractor-hint-mobile {
        display: block;
    }

    h1 {
        font-size: 0.85rem !important;
    }

    #back-button {
        position: relative;
        top: 0rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    pre {
        font-size: 0.75rem;
        padding: 1rem;
    }

    .copy-button {
        opacity: 1;
    }

    footer {
        padding: 2rem 0;
    }

    table {
        font-size: 0.75rem;
    }

    th, td {
        padding: 0.5rem 0.75rem;
    }

    /* KaTeX mobile adjustments */
    .equation-block {
        padding: 1.25rem 1rem;
        margin: 1.5rem 0;
    }

    .katex {
        font-size: 1em;
    }

    .katex-display {
        margin: 1rem 0;
    }
}

/* Contact Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #0a0a0a;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 1.5rem 2rem 2rem 2rem;
    width: 90%;
    max-width: 420px;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-family: 'Andale Mono', monospace;
    font-variant: small-caps;
    font-size: 1.5rem;
    line-height: 1.4;
    word-spacing: -0.4em;
    letter-spacing: 0.1em;
    text-transform: lowercase;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s;
}

.modal-close:hover {
    opacity: 0.7;
}

.modal-close svg {
    display: block;
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#contact-form input,
#contact-form textarea {
    font-family: 'Andale Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    background: transparent;
    border: 1px solid #444;
    border-radius: 6px;
    padding: 0.85rem 1rem;
    outline: none;
    transition: border-color 0.2s ease;
    resize: vertical;
}

#contact-form input::placeholder,
#contact-form textarea::placeholder {
    color: var(--text-inactive);
}

#contact-form input:focus,
#contact-form textarea:focus {
    border-color: #666;
}

#contact-form textarea {
    min-height: 100px;
}

/* Form field validation */
.form-field {
    position: relative;
    z-index: 1;
}

.form-field.error {
    z-index: 10;
}

.form-field input,
.form-field textarea {
    width: 100%;
    box-sizing: border-box;
}

.form-field.error input,
.form-field.error textarea {
    border-color: #a44;
}

.field-tooltip {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 0.5rem;
    padding: 0.35rem 0.65rem;
    background-color: #1a1a1a;
    border: 1px solid #a44;
    border-radius: 4px;
    font-family: 'Axis Std', sans-serif;
    font-size: 0.75rem;
    color: #e88;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 20;
}

.field-tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 0.75rem;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid #a44;
}

.form-field.error .field-tooltip {
    opacity: 1;
    visibility: visible;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.modal-buttons button {
    flex: 1;
    font-family: 'Andale Mono', monospace;
    font-size: 0.85rem;
    padding: 0.85rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.btn-cancel {
    background: transparent;
    border: 1px solid #444;
    color: var(--text-secondary);
}

.btn-cancel:hover {
    border-color: #555;
    color: var(--text-primary);
}

.btn-send {
    background: #1a1a1a;
    border: 1px solid #444;
    color: var(--text-primary);
}

.btn-send:hover {
    background: #252525;
    border-color: #555;
}

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.modal-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    text-align: center;
    padding: 2rem 0;
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.modal-success.animate-in {
    opacity: 1;
    transform: scale(1);
}

.modal-success.fade-out {
    opacity: 0;
    transform: scale(0.95);
}

.modal-success p {
    font-family: 'Axis Std', sans-serif;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Animated checkmark */
.success-checkmark {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: block;
    stroke-width: 2;
    stroke: #4ade80;
    stroke-miterlimit: 10;
    box-shadow: inset 0 0 0 #4ade80;
}

.success-checkmark__circle {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    stroke-width: 2;
    stroke-miterlimit: 10;
    stroke: #4ade80;
    fill: none;
}

.success-checkmark__check {
    transform-origin: 50% 50%;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    stroke: #4ade80;
    stroke-width: 3;
    stroke-linecap: round;
    fill: none;
}

.modal-success.animate-in .success-checkmark__circle {
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.modal-success.animate-in .success-checkmark__check {
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.4s forwards;
}

    @keyframes stroke {
    100% {
        stroke-dashoffset: 0;
    }
}

@media (max-width: 480px) {
    .modal-content {
        padding: 1.5rem;
        margin: 1rem;
    }

    .modal-buttons {
        flex-direction: column;
    }
}