@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('/fonts/roboto-condensed-300.ttf') format('truetype');
}

@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('/fonts/roboto-condensed-400.ttf') format('truetype');
}

@font-face {
    font-family: 'Roboto Condensed';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('/fonts/roboto-condensed-700.ttf') format('truetype');
}

@font-face {
    font-family: 'Noto Serif Local';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('/fonts/noto-serif-regular.ttf') format('truetype');
}

@font-face {
    font-family: 'Noto Serif Local';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('/fonts/noto-serif-bold.ttf') format('truetype');
}

:root {
    --color-primary: #d62222;
    --color-text: white;
    --color-text-link: #aaa;
    --color-text-link-hover: white;
    --color-text-separator: #999;
    --color-bg-error: #ff000066;
    --color-bg-footer: #00000055;
    --color-bg-icon: white;
    --color-border: white;

    --shadow-text: 0 1px 8px rgba(0, 0, 0, 0.8);
    --shadow-text-hover: 0 1px 8px rgba(255, 255, 255, 0.5);
    --shadow-box: 0 1px 8px rgba(0, 0, 0, 0.8);
    --shadow-box-hover: 0 1px 8px rgba(255, 255, 255, 0.5);
    --shadow-icon: 0 1px 8px rgba(255, 255, 255, 0.3);
    --shadow-icon-hover: 0 1px 12px rgba(255, 255, 255, 0.6), 0 0 16px rgba(255, 255, 255, 0.3);
    --shadow-primary-soft: 0 0 8px rgba(214, 34, 34, 0.35);

    --spacing-xs: 2px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 32px;

    --font-family: 'Roboto Condensed', sans-serif;
    --font-weight-normal: 300;
    --font-size-heading: 2.0em;
    --font-size-base: 1em;
    --font-family-prose: 'Noto Serif Local', serif;
    --font-size-prose: 1.1em;
    --line-height-prose: 1.6;

    --size-me: 100px;
    --size-icon: 28px;
    --size-icon-empty: 32px;
    --size-border: 3px;
    --size-max-width-text: 300px;

    --border-radius-circle: 50%;

    --transition-duration: 0.3s;

    /* Button design tokens */
    --btn-padding-y: 8px;
    --btn-padding-x: 14px;
    --btn-radius: 8px;
    --btn-scale-hover: 1.02;
    --btn-scale-active: 0.98;
    --btn-border-width: var(--size-border);
    --btn-border-color: var(--color-border);
    --btn-text-color: var(--color-text);
    --btn-bg: transparent;
    --btn-shadow: var(--shadow-box);
    --btn-primary-bg: var(--color-primary);
    --btn-primary-text: #fff;

    /* Dialog (modal) design tokens */
    --dialog-radius: 12px;
    --dialog-padding: var(--spacing-lg);
    --dialog-text: var(--color-text);
    --dialog-bg: rgba(0, 0, 0, 0.7);
    --dialog-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    --dialog-max-width: 520px;
    --dialog-max-height: 80vh;
    --dialog-backdrop-bg: rgba(0, 0, 0, 0.5);
    --dialog-backdrop-blur: 2px;
    --dialog-anim-duration: 200ms;

    --blur-backdrop: 3px;

    --bg-image-back: url('/images/back.jpg');
    --bg-image-me: url('/images/me.emoji.transparent.png');
    --bg-position-center-top: center top;
    --bg-position-center: center center;

    /* Tooltip design tokens */
    --tooltip-bg: rgba(0, 0, 0, 0.85);
    --tooltip-text: #fff;
    --tooltip-radius: 6px;
    --tooltip-padding: 6px 10px;
    --tooltip-offset: 8px;
    --tooltip-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --tooltip-font-size: 14px;
}

/* Prefer dynamic viewport height on modern browsers */
@supports (height: 1dvh) {
    :root {
        --dialog-max-height: 80dvh;
    }
}
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
}

html,
body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    text-shadow: var(--shadow-text);
    width: 100%;
    height: 100%;
}

a {
    text-decoration: none;
    color: var(--color-text-link);
    -webkit-transition: var(--transition-duration);
    -moz-transition: var(--transition-duration);
    -o-transition: var(--transition-duration);
    transition: var(--transition-duration);
}

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

body {
    display: flex;
    flex-direction: column;
    background-image: var(--bg-image-back);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: var(--bg-position-center-top);
}

main {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

main .me {
    width: var(--size-me);
    height: var(--size-me);
    box-shadow: var(--shadow-box);
    background-image: var(--bg-image-me);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: var(--bg-position-center);
    border-radius: var(--border-radius-circle);
    border: var(--size-border) solid var(--color-border);
    -webkit-transition: var(--transition-duration);
    -moz-transition: var(--transition-duration);
    -o-transition: var(--transition-duration);
    transition: var(--transition-duration);
}

main .me:hover {
    box-shadow: var(--shadow-box-hover);
    transform: scale(1.05);
}

/* ==========================================================================
   Tooltip (CSS-only)
   - Triggered by adding data-tooltip="..." on the anchor wrapping .me
   - Appears above and centered relative to the anchor
   ========================================================================== */
[data-tooltip] {
    position: relative;
}
[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + var(--tooltip-offset));
    transform: translateX(-50%) translateY(4px);
    background: var(--tooltip-bg);
    color: var(--tooltip-text);
    font-size: var(--tooltip-font-size);
    padding: var(--tooltip-padding);
    border-radius: var(--tooltip-radius);
    box-shadow: var(--tooltip-shadow);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-duration), transform var(--transition-duration);
    z-index: 10;
}
[data-tooltip]::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: calc(100% + var(--tooltip-offset) - 4px);
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--tooltip-bg);
    opacity: 0;
    transition: opacity var(--transition-duration);
    z-index: 10;
}
[data-tooltip]:hover::after,
[data-tooltip]:focus::after,
[data-tooltip]:focus-visible::after,
[data-tooltip]:hover::before,
[data-tooltip]:focus::before,
[data-tooltip]:focus-visible::before {
    opacity: 1;
}
[data-tooltip]:hover::after,
[data-tooltip]:focus::after,
[data-tooltip]:focus-visible::after {
    transform: translateX(-50%) translateY(0);
}

main > h1 {
    font-size: var(--font-size-heading);
}

main > h1 > a {
    color: var(--color-text);
}

main p {
    text-align: center;
}

main.error {
    background-color: var(--color-bg-error);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

main.error > * {
    text-transform: uppercase;
}

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: var(--color-bg-footer);
    text-align: center;
    padding: var(--font-size-base);
    line-break: auto;
    backdrop-filter: blur(var(--blur-backdrop));
}

footer .empty {
    width: var(--size-icon-empty);
}

footer .contact {
    flex: 1;
}

footer .icons {
    width: var(--size-icon-empty);
}

footer .icon {
    width: var(--size-icon);
    height: var(--size-icon);
    vertical-align: middle;
    background-color: var(--color-bg-icon);
    border-radius: var(--border-radius-circle);
    padding: var(--spacing-xs);
    box-shadow: var(--shadow-icon);
    -webkit-transition: var(--transition-duration);
    -moz-transition: var(--transition-duration);
    -o-transition: var(--transition-duration);
    transition: var(--transition-duration);
}

footer .icon:hover {
    box-shadow: var(--shadow-icon-hover);
}

footer .icon img {
    margin: -5px;
}

.separator {
    color: var(--color-text-separator);
}

@media (max-width: 600px) {
    :root {
        --font-size-heading: 1.5em;
        --size-me: 80px;
        --spacing-md: 15px;
        --spacing-sm: 8px;
    }

    main .text {
        max-width: 90%;
        padding: 0 var(--spacing-sm);
    }

    main > h1 {
        font-size: var(--font-size-heading);
        text-align: center;
    }

    footer .contact {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    footer .contact > .separator {
        display: none;
    }

    footer .icons {
        align-self: flex-end;
    }
}

/* ==========================================================================
   Modal Dialog
   - Uses native <dialog> element
   - Centered with fixed positioning
   - Backdrop blur and subtle scale-in animation
   ========================================================================== */
dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: none;
    border-radius: var(--dialog-radius);
    padding: var(--dialog-padding);
    color: var(--dialog-text);
    background: var(--dialog-bg);
    backdrop-filter: blur(var(--blur-backdrop));
    box-shadow: var(--dialog-shadow);
    max-width: var(--dialog-max-width);
    width: calc(100% - 2 * var(--dialog-padding));
    max-height: var(--dialog-max-height);
    overflow: hidden;
    animation: dialog-scale-in var(--dialog-anim-duration) ease-out;
    transform-origin: center;
    will-change: transform, opacity;
    color-scheme: dark;
}

dialog::backdrop {
    background: var(--dialog-backdrop-bg);
    backdrop-filter: blur(var(--dialog-backdrop-blur));
    animation: backdrop-fade-in var(--dialog-anim-duration) ease-out;
}

.dialog-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: var(--dialog-max-height);
}

.dialog-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.dialog-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Language toggle styling in dialog header */
.dialog-controls .lang-toggle {
    padding: 2px 6px;
}
.dialog-controls .lang-toggle[aria-pressed="true"] {
    font-weight: 700;
    color: var(--color-text);
    text-shadow: var(--shadow-text-hover);
    border-bottom: 2px solid var(--color-primary);
    border-radius: 0;
}
.dialog-controls .lang-toggle[aria-pressed="false"] {
    opacity: 0.8;
}

.dialog-content h2 {
    font-size: 1.25rem;
}

/* Scrollable body inside dialog; header and actions remain fixed */
.dialog-body {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 0;
    /* Scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.45) transparent;
}
.dialog-body::-webkit-scrollbar {
    width: 10px;
}
.dialog-body::-webkit-scrollbar-track {
    background: transparent;
}
.dialog-body::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.45);
    border-radius: 8px;
    border: 2px solid transparent;
}

/* ==========================================================================
   Typography
   - Scoped vertical rhythm and element defaults
   - Apply via a wrapper: class="typography"
   ========================================================================== */
.typography {
    font-family: var(--font-family-prose);
    font-size: var(--font-size-prose);
    line-height: var(--line-height-prose);
    font-weight: 400; /* ensure regular weight for better contrast to strong */
}
.typography strong,
.typography b {
    font-weight: 900;
}
.typography p + p,
.typography * + ul,
.typography * + ol {
    margin-top: var(--spacing-md);
}
.typography ul,
.typography ol {
    padding-left: 1.25rem;
    margin-top: var(--spacing-sm);
}
.typography h1,
.typography h2,
.typography h3,
.typography h4,
.typography h5,
.typography h6 {
    line-height: 1.25;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-family); /* use Roboto Condensed for headings */
    font-weight: 700;
}
@keyframes dialog-scale-in {
    from { transform: translate(-50%, -50%) scale(0.98); opacity: 0; }
    to { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

@keyframes backdrop-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================================================
   Buttons (global)
   - Usage:
     - <button class="btn">Close</button>
     - <button class="btn primary">Primary</button>
     - <a class="btn-link" href="#">Link</a>
     - <a class="btn-link primary" href="#">Primary Link</a>
   ========================================================================== */
.btn,
.btn-link {
    display: inline-block;
    text-decoration: none;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border-radius: var(--btn-radius);
    transition: var(--transition-duration);
    cursor: pointer;
}

.btn {
    appearance: none;
    border: var(--btn-border-width) solid var(--btn-border-color);
    color: var(--btn-text-color);
    background: var(--btn-bg);
    box-shadow: var(--btn-shadow);
}

.btn.primary,
.btn-link.primary {
    background: var(--btn-primary-bg);
    border: none;
    color: var(--btn-primary-text);
    box-shadow: var(--btn-shadow);
}

.btn-link {
    border: var(--btn-border-width) solid transparent;
    color: var(--btn-text-color);
    background: var(--btn-bg);
    box-shadow: var(--btn-shadow);
}

.btn:hover,
.btn:focus,
.btn:focus-visible,
.btn-link:hover,
.btn-link:focus,
.btn-link:focus-visible {
    outline: none;
    transform: scale(var(--btn-scale-hover));
    box-shadow: var(--shadow-icon-hover);
}

.btn:active,
.btn-link:active {
    transform: scale(var(--btn-scale-active));
}

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* Primary button glow overrides */
.btn.primary:hover,
.btn.primary:focus,
.btn.primary:focus-visible,
.btn-link.primary:hover,
.btn-link.primary:focus,
.btn-link.primary:focus-visible {
    box-shadow: var(--shadow-icon-hover);
}