/* ===================================
   Tab Space - Landing Page CSS
   =================================== */

/* Custom Fonts */
@font-face {
    font-family: "JetBrains Mono";
    src: url('../JetBrainsMono-Regular.woff2');
}

/* CSS Variables - Light Mode */
:root {
    --color-primary: #007AFF;
    --color-primary-dark: #0056CC;
    --color-accent: #5856D6;
    --color-success: #34C759;
    --color-warning: #FF9500;

    /* Salmon — the Tab Space brand accent, shared with the dashboard */
    --color-brand: #FA8072;
    --color-brand-strong: #E9604F;
    --color-brand-tint: rgba(250, 128, 114, 0.14);
    --gradient-brand: linear-gradient(120deg, #FF9776 0%, #FA8072 55%, #E9608C 100%);

    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-glass: rgba(255, 255, 255, 0.72);
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-border: rgba(0, 0, 0, 0.08);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
    --shadow-video: 0 24px 80px rgba(0, 0, 0, 0.2);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Mode - responds to system preference */
@media (prefers-color-scheme: dark) {
    :root {
        --color-brand: #FF8E7F;
        --color-brand-strong: #FFA396;
        --color-brand-tint: rgba(255, 142, 127, 0.16);

        --color-bg: #000000;
        --color-bg-secondary: #1c1c1e;
        --color-bg-glass: rgba(28, 28, 30, 0.72);
        --color-text: #f5f5f7;
        --color-text-secondary: #a1a1a6;
        --color-text-tertiary: #6e6e73;
        --color-border: rgba(255, 255, 255, 0.1);

        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
        --shadow-video: 0 24px 80px rgba(0, 0, 0, 0.5);
    }
}

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

html {
    scroll-behavior: smooth;
}

body,
html {
    background-color: var(--color-bg);
    overflow-x: hidden;
}

body {
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.75rem, 6vw, 4.25rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

p {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
    line-height: 1.7;
    margin: 0 0 1em;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

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

.brand-text {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--color-brand);
}

/* Layout */
.container {
    display: flex;
    margin: 0 auto;
    max-width: 1200px;
    padding: 0 24px;
}

section {
    scroll-margin-top: 80px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 12px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
}

.nav-brand:hover {
    color: var(--color-text);
}

.nav-brand img {
    border-radius: 7px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-links a:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

.nav-links .nav-cta {
    color: #fff;
    background: var(--color-brand);
    border-radius: 999px;
    padding: 8px 18px;
    margin-left: 8px;
}

.nav-links .nav-cta:hover {
    background: var(--color-brand-strong);
    color: #fff;
}

/* Hero Section */
.app-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 140px 24px 96px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.app-main .container {
    flex-direction: column;
    align-items: center;
    gap: 64px;
}

.app-article {
    max-width: 780px;
    text-align: center;
}

.app-article .inner {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-article h1 {
    margin-bottom: 28px;
}

.app-article .description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 640px;
    margin: 0 auto 36px;
}

.app-article .description strong {
    color: var(--color-text);
    font-weight: 600;
}

/* Download Button */
.app-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 24px;
}

.app-buttons a {
    display: inline-block;
    transition: transform var(--transition-spring), opacity var(--transition-fast);
}

.app-buttons a:hover {
    transform: scale(1.03);
}

.app-buttons a:active {
    transform: scale(0.98);
}

.app-buttons img {
    height: 48px;
    width: auto;
    display: block;
}

/* Changelog Link */
.changelog-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 0;
    transition: all var(--transition-fast);
}

.changelog-link:hover {
    color: var(--color-brand);
}

.changelog-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.changelog-link:hover::after {
    transform: translateX(4px);
}

.app-buttons-sub {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.coming-buttons {
    margin-top: 28px;
    margin-bottom: 0;
}

.subtitle {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    font-weight: 400;
}

/* Video Section */
.app-main .img {
    position: relative;
    width: 100%;
    max-width: 960px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.app-main video {
    width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-video);
    background: #000;
    display: block;
}

/* Loading Spinner */
.loader {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    background: var(--color-bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px;
    border-radius: var(--radius-md);
}

.loader svg rect {
    fill: var(--color-brand);
}

/* Features Section */
.features {
    background: var(--color-bg);
    padding: 96px 24px;
}

.features .container {
    flex-direction: column;
    align-items: center;
}

.features h2 {
    text-align: center;
    margin-bottom: 56px;
    color: var(--color-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1080px;
    width: 100%;
}

.feature-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--color-brand-tint);
    color: var(--color-brand);
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-text);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin: 0;
}

/* Pricing */
.pricing {
    background: var(--color-bg-secondary);
    padding: 96px 24px;
}

.pricing .container {
    flex-direction: column;
    align-items: center;
}

.pricing h2,
.pricing-lede {
    text-align: center;
}

.pricing-lede {
    max-width: 720px;
    margin: 16px auto 48px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    width: 100%;
    max-width: 1040px;
    align-items: stretch;
}

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

.pricing-card.recommended {
    border: 2px solid var(--color-brand);
    box-shadow: var(--shadow-md);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    right: 24px;
    padding: 5px 12px;
    border-radius: 999px;
    color: #fff;
    background: var(--gradient-brand);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.pricing-card h3 {
    color: var(--color-text);
    font-size: 1.4rem;
}

.pricing-price {
    color: var(--color-text);
    font-size: 2rem;
    font-weight: 700;
    margin: 12px 0 4px;
}

.pricing-period,
.pricing-note {
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
}

/* Notice that a plan or feature is not shipping yet, so it reads as a caveat
   rather than as ordinary fine print. */
.pricing-note {
    max-width: 46rem;
    margin: 0 auto 8px;
    padding: 12px 18px;
    border: 1px solid var(--color-brand-tint);
    border-radius: 12px;
    background: var(--color-brand-tint);
    color: var(--color-text-secondary);
    line-height: 1.55;
}

/* "Beta" chip next to a feature heading. */
.badge-beta {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 9px;
    border-radius: 999px;
    background: var(--color-brand-tint);
    color: var(--color-brand-strong);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    vertical-align: middle;
}

.subtitle-note {
    color: var(--color-brand-strong);
}

.pricing-card ul {
    margin: 24px 0 0;
    padding-left: 1.2rem;
    color: var(--color-text-secondary);
}

.pricing-card li + li {
    margin-top: 10px;
}

.pricing-footnote {
    max-width: 880px;
    margin: 32px auto 0;
    color: var(--color-text-tertiary);
    font-size: 0.9375rem;
    text-align: center;
}

/* Showcase Section */
.showcase {
    background: var(--color-bg-secondary);
    padding: 96px 24px;
}

.showcase .container {
    flex-direction: column;
    gap: 96px;
}

.showcase-row {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: center;
    gap: 64px;
}

.showcase-row.reverse .showcase-media {
    order: 2;
}

.showcase-media img {
    display: block;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.showcase-copy h2 {
    margin-bottom: 20px;
    color: var(--color-text);
}

.showcase-copy p {
    font-size: 1.0625rem;
    margin: 0;
}

/* Keyboard shortcuts panel */
.kbd-panel {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 16px 28px;
}

.kbd-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 0;
}

.kbd-item+.kbd-item {
    border-top: 1px solid var(--color-border);
}

.kbd-item span {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.kbd-item em {
    font-style: normal;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    text-align: right;
}

kbd {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.8125rem;
    color: var(--color-text);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-bottom-width: 2px;
    border-radius: 6px;
    padding: 3px 8px;
    min-width: 28px;
    text-align: center;
    display: inline-block;
}

/* iPhone and iPad Launch Section */
.coming {
    background: var(--color-bg);
    padding: 96px 24px 0;
}

.coming .container {
    justify-content: center;
}

.coming-inner {
    text-align: center;
    max-width: 640px;
}

.coming-inner h2 {
    color: var(--color-text);
    margin-bottom: 16px;
}

.coming-inner p {
    margin: 0;
}

.badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-brand);
    background: var(--color-brand-tint);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
}

/* Compare Section */
.compare {
    background: var(--color-bg);
    padding: 96px 24px;
}

.compare .container {
    flex-direction: column;
    align-items: center;
}

.compare h2 {
    text-align: center;
    margin-bottom: 56px;
    color: var(--color-text);
}

.compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 900px;
    width: 100%;
}

.compare-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    color: inherit;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.compare-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: inherit;
}

.compare-card h3 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: 12px;
}

.compare-card p {
    font-size: 0.9375rem;
    margin-bottom: 20px;
}

.compare-card .card-link {
    margin-top: auto;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-brand);
}

.compare-card .card-link::after {
    content: ' →';
    transition: transform var(--transition-fast);
    display: inline-block;
}

.compare-card:hover .card-link::after {
    transform: translateX(4px);
}

/* Privacy Section */
.privacy {
    background: var(--color-bg);
    padding: 0 24px 96px;
}

.privacy .container {
    justify-content: center;
}

.privacy-inner {
    background: var(--color-brand-tint);
    border-radius: var(--radius-xl);
    padding: 64px 32px;
    text-align: center;
    width: 100%;
}

.privacy-inner h2 {
    color: var(--color-text);
    margin-bottom: 16px;
}

.privacy-inner p {
    max-width: 640px;
    margin: 0 auto;
}

.privacy-inner .privacy-link {
    display: inline-block;
    margin-top: 20px;
    color: var(--color-brand-strong);
    font-weight: 600;
}

/* Privacy Policy */
.policy-page {
    max-width: 820px;
    margin: 0 auto;
    padding: 128px 24px 80px;
}

.policy-document {
    scroll-margin-top: 96px;
}

.policy-document h1 {
    font-size: clamp(2.4rem, 6vw, 4rem);
    margin-bottom: 12px;
}

.policy-document h2 {
    font-size: 1.5rem;
    margin: 40px 0 12px;
}

.policy-document p {
    font-size: 1rem;
}

.policy-eyebrow {
    margin-bottom: 12px;
    color: var(--color-brand-strong);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.policy-updated {
    color: var(--color-text-tertiary);
    font-size: 0.9375rem;
}

.policy-divider {
    margin: 80px 0;
    border: 0;
    border-top: 1px solid var(--color-border);
}

/* Changelog */
.changelog-page {
    max-width: 820px;
    margin: 0 auto;
    padding: 128px 24px 80px;
}

.changelog-page > h1 {
    font-size: clamp(2.4rem, 6vw, 4rem);
    margin-bottom: 16px;
}

.changelog-lede {
    max-width: 700px;
}

.version-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 32px 0 48px;
}

.version-nav a {
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
}

.version-nav a:hover {
    color: var(--color-brand-strong);
}

.release-entry {
    scroll-margin-top: 96px;
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
}

.release-entry.latest {
    padding: 32px;
    border: 0;
    border-radius: var(--radius-lg);
    background: var(--color-brand-tint);
}

.release-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 16px;
}

.release-heading h2 {
    font-size: 1.5rem;
}

.release-heading time {
    flex: 0 0 auto;
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
}

.release-entry ul {
    padding-left: 1.25rem;
    color: var(--color-text-secondary);
}

.release-entry li + li {
    margin-top: 8px;
}

.changelog-contact {
    margin-top: 40px;
    padding: 24px;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
}

/* FAQ Section */
.faq {
    background: var(--color-bg-secondary);
    padding: 96px 24px;
}

.faq .container {
    flex-direction: column;
    align-items: center;
}

.faq h2 {
    text-align: center;
    margin-bottom: 40px;
    color: var(--color-text);
}

.faq-list {
    width: 100%;
    max-width: 720px;
}

.faq-list details {
    border-bottom: 1px solid var(--color-border);
}

.faq-list summary {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 20px 36px 20px 0;
    cursor: pointer;
    list-style: none;
    position: relative;
}

.faq-list summary::-webkit-details-marker {
    display: none;
}

.faq-list summary::after {
    content: '+';
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.375rem;
    font-weight: 400;
    color: var(--color-brand);
    transition: transform var(--transition-smooth);
}

.faq-list details[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-list details p {
    font-size: 1rem;
    padding-bottom: 20px;
    margin: 0;
    max-width: 640px;
}

/* Footer */
footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 32px 24px;
}

footer .container {
    justify-content: center;
}

footer .inner {
    text-align: center;
    width: 100%;
}

footer .author {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

footer .author a {
    color: var(--color-text-secondary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

footer .author a:hover {
    color: var(--color-brand);
    background: var(--color-bg-secondary);
}

footer .divider {
    color: var(--color-text-tertiary);
}

/* Responsive */
@media (max-width: 900px) {
    .showcase-row {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .showcase-row.reverse .showcase-media {
        order: 0;
    }

    .showcase .container {
        gap: 72px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 10px 16px;
    }

    .nav-links a:not(.nav-cta) {
        padding: 8px 10px;
    }

    .nav-links .nav-hide-mobile {
        display: none;
    }

    .app-main {
        padding: 120px 16px 64px;
    }

    .app-main .container {
        gap: 48px;
    }

    .features,
    .pricing,
    .showcase,
    .compare,
    .faq {
        padding-top: 64px;
        padding-bottom: 64px;
    }

    .privacy {
        padding-bottom: 64px;
    }

    .privacy-inner {
        padding: 48px 24px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 520px;
    }

    .policy-page {
        padding: 104px 20px 64px;
    }

    .changelog-page {
        padding: 104px 20px 64px;
    }

    .policy-divider {
        margin: 64px 0;
    }

    .release-entry.latest {
        padding: 24px;
    }

    .release-heading {
        display: block;
    }

    .release-heading time {
        display: inline-block;
        margin-top: 8px;
    }

    footer .author {
        flex-direction: column;
        gap: 12px;
    }

    footer .divider {
        display: none;
    }
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
    .app-main video {
        animation: scaleIn 0.8s ease-out 0.2s both;
    }

    @keyframes scaleIn {
        from {
            opacity: 0;
            transform: scale(0.95);
        }

        to {
            opacity: 1;
            transform: scale(1);
        }
    }

    .feature-card {
        animation: fadeInUp 0.6s ease-out both;
    }

    .feature-card:nth-child(1) {
        animation-delay: 0.05s;
    }

    .feature-card:nth-child(2) {
        animation-delay: 0.1s;
    }

    .feature-card:nth-child(3) {
        animation-delay: 0.15s;
    }

    .feature-card:nth-child(4) {
        animation-delay: 0.2s;
    }

    .feature-card:nth-child(5) {
        animation-delay: 0.25s;
    }

    .feature-card:nth-child(6) {
        animation-delay: 0.3s;
    }
}

/* Print styles */
@media print {

    header,
    .loader {
        display: none;
    }

    .app-main {
        padding-top: 0;
    }
}

/* Utility Classes */
.flex {
    display: flex;
}

.hidden {
    display: none !important;
}