/* ==========================================================================
   Highness Design System
   ========================================================================== */

:root {
    color-scheme: light;

    /* Color primitives */
    --color-mint-400: #2dd4bf;
    --color-mint-600: #149f90;
    --color-mint-700: #129487;
    --color-mint-900: #00675e;
    --color-sage-50: #e8f8f4;
    --color-paper-50: #fbf9f7;
    --color-paper-100: #f8f6f4;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-ink-900: #1a1a1a;
    --color-ink-600: #666666;
    --color-ink-200: #e0e0e0;
    --color-neutral-50: #f5f5f5;
    --color-neutral-100: #f0f0f0;

    /* Semantic colors */
    --color-brand: var(--color-mint-400);
    --color-brand-strong: var(--color-mint-700);
    --color-brand-ink: var(--color-brand-strong);
    --color-surface: var(--color-white);
    --color-surface-soft: var(--color-paper-50);
    --color-surface-muted: var(--color-paper-100);
    --color-text: var(--color-ink-900);
    --color-text-muted: var(--color-ink-600);
    --color-border: var(--color-ink-200);
    --color-focus: var(--color-brand-strong);

    /* Backward-compatible aliases */
    --font-body: "Inter", system-ui, sans-serif;
    --font-title-large: "Inter", system-ui, sans-serif;
    --font-subtitle: "Inter", system-ui, sans-serif;
    --accent-green: var(--color-brand);
    --light-green-bg: var(--color-sage-50);
    --primary-bg: var(--color-surface-muted);
    --text-dark: var(--color-text);
    --text-light: var(--color-text-muted);
    --white: var(--color-white);
    --black: var(--color-black);
    --color-sf1: var(--color-brand-strong);

    /* Typography */
    --font-family-body: var(--font-body);
    --font-family-display: var(--font-title-large);
    --font-family-rounded: var(--font-subtitle);
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 2.75rem;
    --line-height-tight: 1.2;
    --line-height-body: 1.6;
    --line-height-reading: 1.7;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-14: 3.5rem;
    --space-15: 3.75rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-25: 6.25rem;

    /* Layout and effects */
    --container-wide: 75rem;
    --container-feature: 57.5rem;
    --container-reading: 48.75rem;
    --container-padding: var(--space-6);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow-card: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.05);
    --shadow-phone: 0 1.25rem 3.75rem rgba(0, 0, 0, 0.1);
    --shadow-phone-small: 0 0.9375rem 2.5rem rgba(0, 0, 0, 0.1);
    --border-subtle: 1px solid rgba(0, 0, 0, 0.08);
    --duration-fast: 180ms;
    --ease-standard: ease;
}

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

* {
    margin: 0;
    padding: 0;
}

html {
    text-size-adjust: 100%;
}

body {
    min-width: 20rem;
    background: var(--color-surface);
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: var(--font-size-md);
    font-weight: 400;
    line-height: var(--line-height-body);
}

img,
svg {
    display: block;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 4px;
}

h1,
h2,
h3 {
    color: var(--color-text);
    line-height: var(--line-height-tight);
}

h2 {
    font-family: var(--font-family-display);
    font-weight: 900;
}

.container {
    width: min(100% - (var(--container-padding) * 2), var(--container-wide));
    margin-inline: auto;
}

/* Header */
.header {
    padding-block: var(--space-6);
    background: var(--color-brand);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

a.logo {
    color: inherit;
    text-decoration: none;
}

.logo-icon {
    width: auto;
    height: 3.75rem;
}

.header .logo-icon {
    height: 2.5rem;
}

.home-page .header {
    padding-top: calc(var(--space-6) + 26px);
    padding-bottom: var(--space-6);
}

.logo-text {
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    color: var(--color-white);
    border-bottom: 2px solid transparent;
    padding-bottom: 1px;
    font-size: var(--font-size-md);
    text-decoration: none;
    transition: border-color var(--duration-fast) var(--ease-standard);
}

.nav-link:hover {
    border-bottom-color: currentColor;
}

.btn-get-app {
    border: 0;
    border-radius: var(--radius-md);
    background: var(--color-brand);
    color: var(--color-white);
    cursor: pointer;
    font: inherit;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.btn-get-app:hover {
    opacity: 0.9;
}

/* Hero */
.hero {
    display: flex;
    flex-direction: column;
    padding-top: var(--space-4);
    background: var(--color-brand);
}

.hero-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-15);
}

.hero-left {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.tag {
    display: inline-block;
    width: fit-content;
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 0.375rem 0.75rem;
}

.hero-headline {
    display: flex;
    flex-direction: column;
    color: var(--color-mint-900);
    line-height: 0.9;
}

.hero-headline-small {
    font-family: var(--font-family-rounded);
    font-size: 1.875rem;
    font-weight: 500;
    line-height: 1.3;
}

.hero-headline-big {
    font-family: var(--font-family-display);
    font-size: 140px;
    font-weight: 900;
    line-height: 0.78;
}

.hero-description {
    max-width: 31.25rem;
    color: var(--color-white);
    font-size: var(--font-size-xl);
    line-height: var(--line-height-body);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.app-store-link {
    display: inline-block;
    line-height: 0;
}

.app-store-link .app-store-img {
    width: 200px;
    max-width: 100%;
    -webkit-backface-visibility: visible;
    backface-visibility: visible;
}

.app-store-btn {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    height: 3.125rem;
    border-radius: var(--radius-sm);
    background: var(--color-black);
    color: var(--color-white);
    font-family: var(--font-family-body);
    font-weight: 500;
    padding: 0.625rem 1.125rem;
    text-decoration: none;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.app-store-btn:hover {
    opacity: 0.9;
}

.apple-logo {
    flex-shrink: 0;
    width: 1.125rem;
    height: 1.375rem;
}

.app-store-text {
    display: flex;
    flex-direction: column;
    line-height: var(--line-height-tight);
}

.app-store-label {
    font-size: 0.6875rem;
    opacity: 0.9;
}

.app-store-name {
    font-size: var(--font-size-md);
    font-weight: 600;
}

.hero-right {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-mockup-image {
    width: auto;
    max-height: 28.125rem;
    margin-bottom: var(--space-25);
    object-fit: contain;
}

.feature-bar {
    width: 100%;
    background: var(--color-brand-strong);
    padding-block: var(--space-6);
}

.feature-bar-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-around;
    gap: var(--space-4);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--color-white);
    font-size: var(--font-size-md);
    font-weight: 500;
}

.feature-icon {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    color: currentColor;
}

/* Feature sections */
.feature-section {
    padding-block: var(--space-25);
    background: var(--color-surface-soft);
}

.feature-section .container {
    max-width: var(--container-feature);
}

.feature-section-alt {
    background: var(--color-surface);
}

.feature-content,
.feature-content-reverse {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-20);
}

.feature-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-thumb {
    width: 420px;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    object-fit: contain;
    background: transparent;
}

.feature-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.feature-headline {
    font-family: var(--font-family-display);
    font-size: 40pt;
    font-weight: 900;
}

.feature-description {
    color: var(--color-text-muted);
    font-size: var(--font-size-xl);
    line-height: var(--line-height-body);
}

.feature-link {
    width: fit-content;
    color: var(--color-brand-strong);
    font-size: var(--font-size-md);
    font-weight: 500;
    text-decoration: underline;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.feature-link:hover {
    opacity: 0.8;
}

/* Legacy phone preview classes */
.phone-mockup {
    position: relative;
    width: 17.5rem;
    height: 35rem;
    border-radius: 2.5rem;
    background: var(--color-white);
    box-shadow: var(--shadow-phone);
    padding: var(--space-3);
    transform: rotate(-5deg);
}

.phone-mockup::before {
    position: absolute;
    top: var(--space-5);
    left: 50%;
    width: 3.75rem;
    height: 0.375rem;
    border-radius: 999px;
    background: var(--color-black);
    content: "";
    transform: translateX(-50%);
}

.phone-screen {
    width: 100%;
    height: 100%;
    border-radius: var(--space-8);
    background:
        repeating-linear-gradient(0deg, transparent, transparent 1.25rem, var(--color-border) 1.25rem, var(--color-border) 1.3125rem),
        repeating-linear-gradient(90deg, transparent, transparent 1.25rem, var(--color-border) 1.25rem, var(--color-border) 1.3125rem);
}

.phone-mockup-small {
    width: 15rem;
    height: 30rem;
    border-radius: var(--space-8);
    background: var(--color-white);
    box-shadow: var(--shadow-phone-small);
    padding: 0.625rem;
}

.phone-screen-with-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    background: var(--color-white);
    padding: var(--space-5);
}

.app-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    height: 100%;
}

.app-entry {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border-radius: var(--radius-md);
    background: var(--color-neutral-50);
    padding: var(--space-2);
}

.entry-thumbnail {
    width: 3.125rem;
    height: 3.125rem;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-strong));
}

.entry-text {
    flex: 1;
}

.entry-title {
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.entry-date {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.app-map {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 5rem;
    margin-top: auto;
    border-radius: var(--radius-md);
    background: var(--color-neutral-100);
}

.map-pin {
    position: absolute;
    width: var(--space-2);
    height: var(--space-2);
    border-radius: 50%;
    background: var(--color-brand);
}

.map-pin:nth-child(1) {
    top: 30%;
    left: 30%;
}

.map-pin:nth-child(2) {
    top: 50%;
    right: 35%;
}

.map-pin:nth-child(3) {
    bottom: 25%;
    left: 50%;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-top: var(--space-2);
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.bullet-icon {
    flex-shrink: 0;
    width: var(--space-2);
    height: var(--space-2);
    border-radius: 50%;
    background: var(--color-brand);
}

/* Privacy */
.privacy-section {
    padding-block: var(--space-25);
    background: var(--color-surface-muted);
}

.privacy-content {
    width: 100%;
    margin-inline: auto;
    text-align: center;
}

.privacy-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    margin: 0 auto var(--space-6);
    border-radius: 50%;
    background: var(--color-brand);
}

.privacy-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-white);
}

.privacy-headline {
    margin-bottom: var(--space-5);
    font-family: var(--font-family-display);
    font-size: var(--font-size-4xl);
    font-weight: 900;
}

.privacy-description {
    margin-bottom: var(--space-15);
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-body);
}

.privacy-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-10);
    width: 100%;
    margin-top: var(--space-10);
}

.privacy-card {
    min-width: 0;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-card);
    padding: 2.25rem;
    text-align: left;
}

.card-headline {
    margin-bottom: var(--space-3);
    color: var(--color-text);
    font-family: var(--font-family-rounded);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: var(--line-height-tight);
}

.card-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    line-height: var(--line-height-body);
}

/* Footer */
.footer {
    padding-block: var(--space-15) var(--space-10);
    background: var(--color-white);
}

.footer-content {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    text-align: center;
}

.footer-brand .logo-icon {
    height: 2.5rem;
    width: auto;
    max-width: min(100%, 11rem);
}

.footer-feedback {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    max-width: 22.5rem;
    text-align: center;
}

.footer-tagline {
    color: var(--color-text);
    font-size: var(--font-size-md);
    line-height: var(--line-height-body);
}

.footer-email {
    color: var(--color-brand-strong);
    font-size: var(--font-size-md);
    text-decoration: none;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.footer-email:hover {
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-link {
    color: var(--color-text);
    font-size: var(--font-size-md);
    text-decoration: none;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.footer-link:hover {
    opacity: 0.7;
}

.social-icons {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.social-icon:hover {
    opacity: 0.7;
}

.social-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.social-icon[aria-label="Mastodon"] svg {
    width: 1.8rem;
    height: 1.8rem;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-5);
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-6);
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    text-align: center;
}

.footer-copyright p {
    margin-block: var(--space-1);
}

/* Text pages */
.about-page {
    padding-block: var(--space-15) var(--space-20);
    background: var(--color-surface-muted);
}

.about-page .container {
    max-width: var(--container-reading);
}

.about-title {
    margin-bottom: var(--space-10);
    color: var(--color-text);
    font-family: var(--font-family-display);
    font-size: 40pt;
    font-weight: 900;
    line-height: var(--line-height-tight);
}

.about-section {
    margin-bottom: var(--space-10);
}

.about-section p {
    margin-bottom: var(--space-4);
    color: var(--color-text);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-reading);
}

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

.about-lead {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-body);
}

.about-heading {
    margin: var(--space-8) 0 var(--space-4);
    color: var(--color-text);
    font-family: var(--font-family-rounded);
    font-size: var(--font-size-2xl);
    font-weight: 500;
}

.about-section:first-child .about-heading,
.about-heading:first-child {
    margin-top: 0;
}

.about-subheading {
    margin: var(--space-6) 0 var(--space-3);
    color: var(--color-text);
    font-family: var(--font-family-rounded);
    font-size: var(--font-size-xl);
    font-weight: 500;
}

.about-section ul {
    margin: 0 0 var(--space-4);
    padding-left: var(--space-6);
}

.about-section li {
    margin-bottom: var(--space-2);
    color: var(--color-text);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-reading);
}

.legal-doc .legal-meta {
    margin-top: calc(var(--space-2) * -1);
    margin-bottom: var(--space-8);
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
}

.legal-doc a {
    color: var(--color-brand-strong);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.legal-doc a:hover {
    color: var(--color-text);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-content,
    .feature-content,
    .feature-content-reverse {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .hero-left,
    .feature-text {
        align-items: center;
        text-align: center;
    }

    .hero-headline {
        align-items: center;
    }

    .hero-headline-big {
        font-size: 118px;
    }

    .hero-description,
    .feature-description {
        margin-inline: auto;
        text-align: center;
    }

    .privacy-headline,
    .feature-headline,
    .about-title {
        font-size: var(--font-size-3xl);
    }

    .privacy-cards {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .privacy-card {
        text-align: center;
    }

    .feature-bar {
        padding-block: var(--space-5);
    }

    .feature-bar-content {
        flex-direction: column;
        gap: var(--space-4);
    }

    .footer-content,
    .footer-brand,
    .footer-feedback {
        align-items: center;
        text-align: center;
    }

    .nav {
        gap: var(--space-4);
    }

    .nav-link,
    .btn-get-app {
        font-size: var(--font-size-sm);
    }

    .btn-get-app {
        padding: var(--space-2) var(--space-4);
    }

    .about-title {
        margin-bottom: var(--space-8);
    }

    .about-page {
        padding-block: var(--space-10) var(--space-15);
    }

    .about-heading {
        font-size: 1.375rem;
    }

    .about-section p,
    .about-section li {
        font-size: 1.0625rem;
    }

    .legal-doc .legal-meta {
        font-size: 0.9375rem;
    }
}

@media (max-width: 640px) {
    :root {
        --container-padding: var(--space-5);
    }

    .header-content {
        flex-wrap: nowrap;
        justify-content: center;
    }

    .nav {
        justify-content: flex-end;
    }

    .hero-headline {
        line-height: 0.95;
    }

    .hero-headline-big {
        font-size: 90px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .app-store-btn {
        width: 100%;
        justify-content: center;
    }

    .hero-mockup-image {
        margin-bottom: var(--space-12);
    }

    .feature-section,
    .privacy-section {
        padding-block: var(--space-15);
    }

    .feature-content,
    .feature-content-reverse {
        gap: var(--space-8);
    }

    .hero-description,
    .feature-description {
        font-size: var(--font-size-lg);
    }

    .app-store-link .app-store-img {
        width: 168px;
    }

    .privacy-card {
        padding: var(--space-6);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-6);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-3);
    }
}