/* =============================================================================
   YT Video Theme — Main stylesheet
   Design system (variables, resets, typography, layout, utilities)
   Component and page styles live in assets/css/components/ and assets/css/pages/
   ============================================================================= */

/* --- CSS Variables --------------------------------------------------------- */
:root {
    /* Colors */
    --color-bg-primary:     #0A0A0A;
    --color-bg-secondary:   #141414;
    --color-bg-tertiary:    #1E1E1E;
    --color-bg-card:        #181818;
    --color-bg-card-hover:  #222222;

    --color-text-primary:   #FFFFFF;
    --color-text-secondary: #B3B3B3;
    --color-text-muted:     #666666;

    --color-accent:         #D4AF37;
    --color-accent-hover:   #E5C348;
    --color-accent-glow:    rgba(212, 175, 55, 0.15);

    --color-border:         #2A2A2A;
    --color-border-light:   #333333;

    --color-success:        #1DB954;
    --color-error:          #E34234;
    --color-overlay:        rgba(0, 0, 0, 0.7);

    /* Header/Footer theme mods (overridden by inline style in enqueue.php) */
    --header-bg-color:      rgba(10, 10, 10, 0.95);
    --header-logo-height:   40px;
    --footer-bg-color:      #0A0A0A;
    --footer-text-color:    #B3B3B3;
    --footer-logo-height:   32px;

    /* Fonts */
    --font-display:  'Playfair Display', 'Noto Serif SC', Georgia, serif;
    --font-body:     'Inter', 'DM Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:     'JetBrains Mono', 'SF Mono', Menlo, monospace;

    /* Font sizes */
    --text-xs:     0.75rem;
    --text-sm:     0.875rem;
    --text-base:   1rem;
    --text-lg:     1.125rem;
    --text-xl:     1.25rem;
    --text-2xl:    1.5rem;
    --text-3xl:    1.875rem;
    --text-4xl:    2.25rem;
    --text-5xl:    3rem;
    --text-hero:   clamp(2.5rem, 6vw, 4.5rem);

    --leading-tight:    1.2;
    --leading-normal:   1.6;
    --leading-relaxed:  1.8;

    /* 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-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Layout */
    --max-width:        1280px;
    --max-width-narrow: 900px;
    --max-width-wide:   1400px;

    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;

    /* Motion */
    --transition-fast:   150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow:   500ms ease;

    /* Shadows */
    --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md:   0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg:   0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl:   0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 24px var(--color-accent-glow);

    /* Z-index */
    --z-header:    100;
    --z-dropdown:  200;
    --z-overlay:   900;
    --z-modal:     1000;
}

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

html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
}

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

a:hover,
a:focus {
    color: var(--color-accent-hover);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

ul, ol {
    list-style: none;
}

p + p {
    margin-top: var(--space-4);
}

/* --- Typography ------------------------------------------------------------ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: var(--leading-tight);
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

@media (min-width: 768px) {
    h1 { font-size: var(--text-5xl); }
    h2 { font-size: var(--text-4xl); }
    h3 { font-size: var(--text-3xl); }
}

.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background-color: var(--color-bg-secondary);
    clip: auto !important;
    clip-path: none;
    color: var(--color-accent);
    display: block;
    font-size: var(--text-sm);
    font-weight: 700;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: var(--z-modal);
}

.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    z-index: var(--z-modal);
}
.skip-link:focus {
    top: var(--space-2);
    left: var(--space-2);
}

/* --- Layout utilities ------------------------------------------------------ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding-inline: var(--space-8);
    }
}

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

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

.site-main {
    min-height: 60vh;
}

/* --- Sections -------------------------------------------------------------- */
.section {
    padding-block: var(--space-16);
}

@media (min-width: 768px) {
    .section {
        padding-block: var(--space-24);
    }
}

.section__header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.section__header--center {
    justify-content: center;
    text-align: center;
}

.section__title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin: 0;
}

@media (min-width: 768px) {
    .section__title {
        font-size: var(--text-4xl);
    }
}

.section__more {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}
.section__more:hover {
    color: var(--color-accent);
}

/* --- Buttons --------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-md);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    min-height: 40px;
}

.btn--large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    min-height: 48px;
}

.btn--primary {
    background-color: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}
.btn--primary:hover,
.btn--primary:focus {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #000;
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn--outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border-light);
}
.btn--outline:hover,
.btn--outline:focus {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn--youtube {
    background-color: #FF0000;
    color: #fff;
    border-color: #FF0000;
}
.btn--youtube:hover,
.btn--youtube:focus {
    background-color: #CC0000;
    border-color: #CC0000;
    color: #fff;
}

/* --- Video grid ------------------------------------------------------------ */
.video-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
    }
}

@media (min-width: 1280px) {
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* --- Form elements --------------------------------------------------------- */
input[type="text"],
input[type="email"],
input[type="url"],
input[type="search"],
input[type="tel"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

textarea {
    resize: vertical;
    min-height: 120px;
    font-family: var(--font-body);
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.required {
    color: var(--color-error);
}

/* --- Alerts ---------------------------------------------------------------- */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-6);
    border: 1px solid transparent;
}

.alert--success {
    background-color: rgba(29, 185, 84, 0.1);
    border-color: rgba(29, 185, 84, 0.3);
    color: var(--color-success);
}

.alert--error {
    background-color: rgba(227, 66, 52, 0.1);
    border-color: rgba(227, 66, 52, 0.3);
    color: var(--color-error);
}

/* --- Page headers ---------------------------------------------------------- */
.page-header,
.page-banner {
    padding-block: var(--space-16) var(--space-12);
    background-color: var(--color-bg-secondary);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
}

@media (min-width: 768px) {
    .page-header,
    .page-banner {
        padding-block: var(--space-20) var(--space-16);
    }
}

.page-header__title,
.page-banner__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-3);
}

@media (min-width: 768px) {
    .page-header__title,
    .page-banner__title {
        font-size: var(--text-5xl);
    }
}

.page-banner__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-inline: auto;
}

/* --- Entry content (rich text from editor) -------------------------------- */
.entry-content {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text-secondary);
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4,
.entry-content h5,
.entry-content h6 {
    color: var(--color-text-primary);
    margin-top: var(--space-10);
    margin-bottom: var(--space-4);
}

.entry-content h1:first-child,
.entry-content h2:first-child,
.entry-content h3:first-child {
    margin-top: 0;
}

.entry-content p {
    margin-bottom: var(--space-5);
}

.entry-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.entry-content a:hover {
    color: var(--color-accent-hover);
}

.entry-content ul,
.entry-content ol {
    margin-bottom: var(--space-5);
    padding-left: var(--space-6);
    list-style: revert;
}

.entry-content li {
    margin-bottom: var(--space-2);
}

.entry-content blockquote {
    margin-block: var(--space-6);
    padding: var(--space-5) var(--space-6);
    border-left: 4px solid var(--color-accent);
    background-color: var(--color-bg-secondary);
    font-style: italic;
    color: var(--color-text-primary);
}

.entry-content img {
    margin-block: var(--space-6);
    border-radius: var(--border-radius-md);
}

.entry-content pre,
.entry-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-sm);
}

.entry-content code {
    padding: 0.1em 0.4em;
}

.entry-content pre {
    padding: var(--space-4);
    overflow-x: auto;
    margin-block: var(--space-6);
}

.entry-content pre code {
    padding: 0;
    background: transparent;
}

.entry-content hr {
    border: 0;
    height: 1px;
    background-color: var(--color-border);
    margin-block: var(--space-10);
}

/* --- Breadcrumb ------------------------------------------------------------ */
.breadcrumb {
    margin-bottom: var(--space-6);
    font-size: var(--text-sm);
}

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

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-muted);
}

.breadcrumb__item::after {
    content: '/';
    color: var(--color-text-muted);
}

.breadcrumb__item:last-child::after {
    display: none;
}

.breadcrumb__item a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

.breadcrumb__item a:hover {
    color: var(--color-accent);
}

.breadcrumb__item.is-current span {
    color: var(--color-text-primary);
}

/* --- No results / empty state --------------------------------------------- */
.no-results {
    text-align: center;
    padding-block: var(--space-20);
}

.no-results__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.no-results__description {
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
    max-width: 500px;
    margin-inline: auto;
    margin-bottom: var(--space-8);
}

/* --- Back to top ----------------------------------------------------------- */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-accent);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: var(--z-header);
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    transform: translateY(-4px);
    background-color: var(--color-accent-hover);
}

/* --- Entry meta ------------------------------------------------------------ */
.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    align-items: center;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-block: var(--space-3);
}

.entry-meta__sep {
    color: var(--color-text-muted);
}

.entry-meta a {
    color: var(--color-text-secondary);
}

.entry-meta a:hover {
    color: var(--color-accent);
}

/* --- Category chips -------------------------------------------------------- */
.category-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: center;
}

.category-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.category-chip:hover,
.category-chip:focus {
    border-color: var(--color-accent);
    background-color: var(--color-bg-card-hover);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.category-chip__count {
    padding: 2px 8px;
    background-color: var(--color-bg-primary);
    border-radius: 999px;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* --- Share buttons --------------------------------------------------------- */
.share {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    padding-block: var(--space-5);
    border-block: 1px solid var(--color-border);
    margin-block: var(--space-6);
}

.share__label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.share__list {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.share__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share__link:hover,
.share__link:focus {
    background-color: var(--color-bg-card-hover);
    color: var(--color-text-primary);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.share__link span {
    display: none;
}

@media (min-width: 640px) {
    .share__link span {
        display: inline;
    }
}

/* --- Social icons ---------------------------------------------------------- */
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-icon:hover,
.social-icon:focus {
    background-color: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
    transform: translateY(-3px);
}

/* --- Comments -------------------------------------------------------------- */
.comments-area {
    margin-top: var(--space-16);
    padding-top: var(--space-10);
    border-top: 1px solid var(--color-border);
}

.comments-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-8);
}

.comment-list,
.comment-list ol {
    list-style: none;
    padding: 0;
}

.comment-list .comment {
    padding: var(--space-5) 0;
    border-bottom: 1px solid var(--color-border);
}

.comment-list .comment-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.comment-list .comment-author img {
    border-radius: 50%;
}

.comment-list .comment-meta {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.comment-respond {
    margin-top: var(--space-10);
}

.comment-form .comment-notes,
.comment-form p.logged-in-as {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-5);
}

.comment-form p {
    margin-bottom: var(--space-5);
}

/* --- Search form ----------------------------------------------------------- */
.search-form {
    display: flex;
    gap: var(--space-2);
    align-items: stretch;
}

.search-form__input {
    flex: 1;
}

.search-form__submit {
    padding: 0 var(--space-5);
    background-color: var(--color-accent);
    color: #000;
    border: 1px solid var(--color-accent);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
}

.search-form__submit:hover {
    background-color: var(--color-accent-hover);
}

/* --- Generic page ---------------------------------------------------------- */
.generic-page {
    padding-block: var(--space-12);
}

.generic-page__title {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .generic-page__title {
        font-size: var(--text-5xl);
    }
}

.generic-page__header {
    margin-bottom: var(--space-10);
}

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

/* --- Print ----------------------------------------------------------------- */
@media print {
    .site-header,
    .site-footer,
    .hero__actions,
    .share,
    .back-to-top {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }
}