/* Hi */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --text-primary: #2a2a2a;
    --text-secondary: #555555;
    --bg-main: #fafafa;
    --bg-subtle: #f5f5f5;
    --border-color: #e5e5e5;
    --link-hover: #000000;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 120ms cubic-bezier(0.1, 0.7, 0.1, 1);
    --theme-toggle-size: 32px;
    --signature-color: #165fe8;
    --selection-bg: rgba(22, 95, 232, 0.2);
    --selection-color: var(--text-primary);
    --page-transition: 0.4s var(--transition-smooth);
    --popup-bg: rgba(0, 0, 0, 0.1);
    --z-page: 1;
    --z-theme: 2;
    --z-popup: 3;
    --highlight-text: rgba(67, 90, 111, 0.08);
}

/* Dark theme variables */
[data-theme="dark"] {
    --text-primary: #d1d1d1;
    --text-secondary: #999999;
    --bg-main: #1a1a1e;
    --bg-subtle: #18181c;
    --border-color: #272729;
    --link-hover: #ffffff;
    --signature-color: #71a2ff;
    --selection-bg: rgba(113, 162, 255, 0.2);
    --selection-color: var(--text-primary);
    --highlight-text: rgba(152, 170, 189, 0.08);
}

body {
    font-family: var(--font-mono);
    line-height: 1.5;
    color: var(--text-primary);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    background: var(--bg-main);
    letter-spacing: -0.011em;
}

a {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
}

a:hover {
    color: var(--link-hover);
}

p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
    max-width: 580px;
}

::selection {
    background: var(--selection-bg);
    color: var(--selection-color);
}

.highlight-text {
    background-color: var(--highlight-text);
    border-radius: 3px;
    padding: 2px 4px;
    margin: 0 -4px;
}

#page-wrapper {
    transition: opacity var(--transition-fast);
    position: relative;
    z-index: var(--z-page);
}

#popup-wrapper {
    position: fixed;
    z-index: var(--z-popup);
    pointer-events: none;
}

.container {
    max-width: 520px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    padding: 72px 0 48px;
}

.header .logo {
    margin-bottom: 24px;
    border-radius: 50%;
    cursor: pointer;
    transform: rotate(0deg);
    transition: transform 0.2s var(--transition-smooth);
}

.header h1 {
    font-size: 30px;
    font-weight: 500;
    margin-bottom: 16px;
    line-height: 1.3;
}

.header h1 .title {
    letter-spacing: -0.02em;
    display: inline-block;
}

.header h1 .byline {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
    margin-top: 4px;
    letter-spacing: normal;
}

.header-desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 8px;
}

.projects,
.companies,
.services,
.founder-message {
    padding: 48px 0;
}

.services,
.founder-message,
.footer {
    border-top: 1px solid var(--border-color);
}

.projects h2,
.companies h2,
.services h2,
.founder-message h2 {
    font-size: 16px;
    margin-bottom: 24px;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.card-grid {
    display: grid;
    gap: 16px;
}

.card {
    padding: 16px;
    margin: 0 -16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: background-color var(--transition-fast);
    will-change: background-color;
    background-color: transparent;
}

.card:hover {
    background-color: var(--bg-subtle);
}

.card.is-available {
    border-style: dashed;
}

.card.is-available:hover .cursor {
    display: inline;
}

.card h3 {
    font-size: 14px;
    margin-bottom: 8px;
    font-weight: 500;
}

.card p {
    font-size: 13px;
    color: var(--text-secondary);
}

.card .card-icon {
    width: 24px;
    height: 24px;
    display: block;
    margin-bottom: 14px;
}

.founder-message p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
    max-width: 580px;
}

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

.founder-name {
    margin-top: 24px;
    font-weight: 500;
    color: var(--text-primary);
    font-style: italic;
}

.founder-photos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 24px 0;
}

.founder-photos img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: filter var(--transition-fast);
}

.founder-photos img:hover {
    filter: brightness(1.05);
}

.signature-container {
    margin-top: 24px;
}

.footer {
    padding: 48px 0;
    margin-top: 48px;
}

.footer-links {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.social-links {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
    white-space: nowrap;
}

.social-link {
    color: var(--text-secondary);
    font-size: 13px;
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--text-primary);
}

.website-link {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

/* Performance optimization for images */
img {
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

/* Better mobile tap targets */
@media (max-width: 768px) {
    .header {
        padding: 56px 0 40px;
    }

    .header h1 {
        font-size: 24px;
    }

    .footer-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
    }
}

/* Theme toggle styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: var(--theme-toggle-size);
    height: var(--theme-toggle-size);
    padding: 8px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-main);
    color: var(--text-primary);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    z-index: var(--z-theme);
}

.theme-toggle:hover {
    background: var(--bg-subtle);
}

.theme-toggle svg {
    width: 100%;
    height: 100%;
}

.reaction-overlay {
    position: fixed;
    width: 308px;
    height: 176px;
    z-index: 9999;
    pointer-events: none;
}

.cursor {
    display: none;
    animation: blink 1s step-end infinite;
    color: var(--signature-color);
}

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

/* Email popup styles */
.email-popup {
    position: fixed;
    inset: 0;
    background: transparent;
    pointer-events: all;
    display: flex;
    align-items: center;
    margin-top: -15%;
    justify-content: center;
    animation: fadeBackground 400ms var(--transition-smooth) forwards;
}

.email-popup.closing {
    animation: fadeBackgroundOut 400ms var(--transition-smooth) forwards;
}

.email-popup-content {
    background: var(--bg-main);
    padding: 48px 24px 24px 24px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    text-align: center;
    animation: slideFromLeft 400ms var(--transition-smooth);
    width: 100%;
    max-width: 300px;
    margin-top: 36px;
    position: relative;
}

.email-popup.closing .email-popup-content {
    animation: slideToRight 400ms var(--transition-smooth) forwards;
}

.email-popup-content h3 {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.email-popup-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.email-popup-content button {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 4px;
    color: var(--text-primary);
    cursor: pointer;
    font-family: var(--font-mono);
    transition: background-color var(--transition-fast);
}

.email-popup-content button:hover {
    background: var(--border-color);
}

.email-popup-avatar {
    position: absolute;
    top: -36px;
    left: 50%;
    transform: translateX(-50%);
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    object-fit: cover;
    background: var(--bg-main);
}

@keyframes fadeBackground {
    from {
        background-color: transparent;
    }
    to {
        background-color: var(--popup-bg);
    }
}

@keyframes fadeBackgroundOut {
    from {
        background-color: var(--popup-bg);
    }
    to {
        background-color: transparent;
    }
}

@keyframes slideFromLeft {
    from {
        opacity: 0;
        transform: translateX(-100vw);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideToRight {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100vw);
    }
}