/* HotKeysHub Main CSS — Deferred */

/* ═══ SECTIONS ═══ */
.section { padding: 40px 0; }
.section--alt { background: var(--c-surface-2); }
.section__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}
.section__subtitle { color: var(--c-text-2); font-size: 15px; margin-top: -14px; margin-bottom: 20px; }

/* ═══ HERO ═══ */
.hero {
    padding: 56px 0 40px;
    text-align: center;
    background: linear-gradient(180deg, var(--c-surface) 0%, var(--c-bg) 100%);
    border-bottom: 1px solid var(--c-border);
}
.hero__title {
    font-size: clamp(28px, 5vw, 44px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--c-text) 0%, var(--c-accent) 60%, var(--c-accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero__subtitle { font-size: 17px; color: var(--c-text-2); max-width: 560px; margin: 0 auto 28px; line-height: 1.6; }
.hero__search {
    max-width: 580px;
    margin: 0 auto;
    position: relative;
}
.hero__search input {
    width: 100%;
    padding: 16px 24px 16px 52px;
    font-size: 16px;
    font-family: var(--font);
    border: 2px solid var(--c-border);
    border-radius: 100px;
    background: var(--c-surface);
    color: var(--c-text);
    outline: none;
    transition: all var(--transition);
    box-shadow: 0 4px 20px var(--c-shadow);
}
.hero__search input:focus {
    border-color: var(--c-accent);
    box-shadow: 0 4px 20px rgba(37,99,235,0.15);
}
.hero__search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-text-3);
}
.hero__search input::placeholder { color: var(--c-text-3); }
.hero__stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 24px;
    font-size: 14px;
    color: var(--c-text-2);
}
.hero__stat-num { font-weight: 700; color: var(--c-accent); font-size: 20px; display: block; }

/* ═══ FILTERS ═══ */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
    align-items: center;
}
.filter-btn {
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    border: 1px solid var(--c-border);
    border-radius: 100px;
    background: var(--c-surface);
    color: var(--c-text-2);
    cursor: pointer;
    transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.is-active {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

/* Filters bar */
.filters-bar {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--c-surface);
    border-radius: 12px;
    border: 1px solid var(--c-border);
}
.filters-row {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    flex-wrap: wrap;
}
.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}
.filter-group label {
    font-size: 13px;
    color: var(--c-text-2);
    white-space: nowrap;
}
.filter-group select {
    padding: 6px 12px;
    font-size: 13px;
    font-family: var(--font);
    border: 1px solid var(--c-border);
    border-radius: 6px;
    background: var(--c-bg);
    color: var(--c-text);
    cursor: pointer;
}

/* Alphabet filter */
.alphabet-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}
.alphabet-filter__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 0 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--c-text-2);
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: 4px;
    transition: all var(--transition);
}
.alphabet-filter__item:hover {
    background: var(--c-surface-2);
    color: var(--c-accent);
}
.alphabet-filter__item.is-active {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--c-text-2);
}

/* ═══ PROGRAM CARDS GRID ═══ */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.program-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    text-decoration: none;
    color: var(--c-text);
}
.program-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--c-shadow);
    border-color: var(--c-accent);
    color: var(--c-text);
}
.program-card__logo {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    border-radius: var(--radius);
    object-fit: contain;
    background: var(--c-surface-2);
    padding: 4px;
}
.program-card__info { flex: 1; min-width: 0; }
.program-card__name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.program-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
    font-size: 12px;
    color: var(--c-text-3);
}
.program-card__os {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 8px;
    background: var(--c-surface-2);
    border-radius: 100px;
    font-size: 11px;
    font-weight: 500;
    color: var(--c-text-2);
}
.program-card__count { font-weight: 600; color: var(--c-accent); }

/* ═══ PROGRAM PAGE ═══ */
.program-header {
    padding: 28px 0;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
}
.program-header__inner { display: flex; align-items: flex-start; gap: 20px; flex-wrap: wrap; }
.program-header__logo {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    object-fit: contain;
    background: var(--c-surface-2);
    padding: 8px;
    flex-shrink: 0;
}
.program-header__logo--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--c-accent);
    background: var(--c-accent-light, rgba(37,99,235,0.1));
    padding: 0;
    letter-spacing: -1px;
}
.program-header__info { flex: 1; min-width: 200px; }
.program-header__name { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.2; margin-bottom: 4px; }
.program-header__stats { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 6px; font-size: 14px; color: var(--c-text-2); }
.program-header__stats span { display: flex; align-items: center; gap: 4px; }
.program-header__actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

/* OS Switcher */
.os-switcher {
    display: flex;
    gap: 0;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    margin: 20px 0;
}
.os-switcher__btn {
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    border: none;
    background: var(--c-surface);
    color: var(--c-text-2);
    cursor: pointer;
    transition: all var(--transition);
    border-right: 1px solid var(--c-border);
}
.os-switcher__btn:last-child { border-right: none; }
.os-switcher__btn:hover { background: var(--c-surface-2); }
.os-switcher__btn.is-active { background: var(--c-accent); color: #fff; }

/* Group navigation pills */
.group-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px 0;
    border-bottom: 1px solid var(--c-border);
    margin-bottom: 20px;
}
.group-nav__link {
    padding: 5px 14px;
    font-size: 12px;
    font-weight: 500;
    color: var(--c-text-2);
    background: var(--c-surface-2);
    border-radius: 100px;
    transition: all var(--transition);
}
.group-nav__link:hover { background: var(--c-accent); color: #fff; }

/* ═══ SHORTCUT TABLE ═══ */
.shortcut-group { margin-bottom: 28px; }
.shortcut-group__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--c-text);
    padding: 12px 0 8px;
    border-bottom: 2px solid var(--c-accent);
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.shortcut-group__title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--c-accent);
    border-radius: 2px;
    flex-shrink: 0;
}

.shortcuts-table { width: 100%; border-collapse: collapse; }
.shortcuts-table th {
    text-align: left;
    padding: 10px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--c-text-3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--c-border);
    background: var(--c-surface-2);
}
.shortcuts-table td {
    padding: 10px 12px;
    font-size: 14px;
    border-bottom: 1px solid var(--c-border);
    vertical-align: middle;
}
.shortcuts-table tr:hover td { background: var(--c-surface-2); }
.shortcuts-table tr.is-popular td { background: rgba(37, 99, 235, 0.04); }
html.dark .shortcuts-table tr.is-popular td { background: rgba(59, 130, 246, 0.08); }

.shortcuts-table .col-actions { width: 1%; white-space: nowrap; padding: 6px 8px; text-align: left; }
.shortcuts-table .col-keys { width: 1%; white-space: nowrap; }
.shortcuts-table .col-action { width: auto; }
.col-actions button { vertical-align: middle; }

/* ═══ ACCENT BUTTON ═══ */
.btn--accent {
    background: var(--c-accent);
    color: #fff;
    border: 1px solid var(--c-accent);
}
.btn--accent:hover {
    background: var(--c-accent-2, #1d4ed8);
    border-color: var(--c-accent-2, #1d4ed8);
    color: #fff;
}

/* ═══ AI SPINNER ═══ */
.ai-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--c-border);
    border-top-color: var(--c-accent);
    border-radius: 50%;
    animation: ai-spin 0.8s linear infinite;
    margin: 0 auto;
}
@keyframes ai-spin { to { transform: rotate(360deg); } }

/* ═══ FAVORITE BUTTON ═══ */
.favorite-btn {
    transition: all 0.3s ease;
}
.favorite-btn .favorite-icon {
    transition: all 0.3s ease;
}
.favorite-btn.is-favorited .favorite-icon path {
    fill: #fbbf24;
    stroke: #fbbf24;
    animation: favorite-bounce 0.4s ease;
}
.favorite-btn:hover .favorite-icon {
    transform: scale(1.1);
}
@keyframes favorite-bounce {
    0% { transform: scale(1); }
    25% { transform: scale(1.3); }
    50% { transform: scale(0.9); }
    75% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* ═══ KEYBOARD KEY STYLING ═══ */
kbd, .kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
    padding: 2px 8px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--c-text);
    background: var(--c-kbd-bg);
    border: 1px solid var(--c-kbd-border);
    border-bottom-width: 3px;
    border-bottom-color: var(--c-kbd-shadow);
    border-radius: 6px;
    box-shadow: 0 1px 2px var(--c-shadow);
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
    white-space: nowrap;
    line-height: 1;
    user-select: none;
}
kbd:hover, .kbd:hover { transform: translateY(-1px); box-shadow: 0 2px 4px var(--c-shadow); }
.kbd-combo { display: inline-flex; align-items: center; gap: 3px; flex-wrap: nowrap; white-space: nowrap; cursor: pointer; }
.kbd-combo:hover kbd { background: var(--c-accent-light, rgba(37, 99, 235, 0.1)); }
.kbd-combo.copied kbd { background: var(--c-success, #10b981); color: #fff; transform: scale(0.95); }
.kbd-plus { color: var(--c-text-3); font-size: 11px; font-weight: 400; margin: 0 1px; }

/* Vote buttons */
.vote-btn {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 2px 4px;
    font-size: 10px;
    font-family: var(--font);
    border: none;
    background: transparent;
    color: var(--c-text-3);
    cursor: pointer;
    transition: all var(--transition);
}
.vote-btn svg { width: 16px; height: 16px; }
.vote-btn:hover { color: var(--c-accent); }
.vote-btn--active { color: var(--c-accent); }

/* Report error button */
.report-btn {
    opacity: 0;
    padding: 4px;
    border: none;
    background: transparent;
    color: var(--c-text-3);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 12px;
    border-radius: 4px;
}
.shortcuts-table tr:hover .report-btn { opacity: 0.6; }
.report-btn:hover { opacity: 1 !important; color: var(--c-warning); }

/* Search on page */
.page-search-bar {
    margin-bottom: 16px;
    position: relative;
}
.page-search-bar input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    font-size: 14px;
    font-family: var(--font);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    background: var(--c-surface);
    color: var(--c-text);
    outline: none;
    transition: border-color var(--transition);
}
.page-search-bar input:focus { border-color: var(--c-accent); }
.page-search-bar input[type="search"]::-webkit-search-cancel-button,
.page-search-bar input[type="search"]::-webkit-search-decoration { -webkit-appearance: none; display: none; }

/* ═══ SEO INTRO ═══ */
.seo-intro {
    padding: 16px 0;
    font-size: 15px;
    color: var(--c-text-2);
    line-height: 1.7;
    max-width: 800px;
}

/* ═══ FAQ ═══ */
.faq-section { margin-top: 32px; }
.faq-item {
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    overflow: hidden;
}
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: var(--c-surface);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    border: none;
    width: 100%;
    text-align: left;
    color: var(--c-text);
    font-family: var(--font);
    transition: background var(--transition);
}
.faq-question:hover { background: var(--c-surface-2); }
.faq-answer {
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    font-size: 14px;
    color: var(--c-text-2);
    line-height: 1.7;
}
.faq-item.is-open .faq-answer { max-height: 500px; padding: 0 16px 16px; }

/* ═══ RELATED & OTHER OS ═══ */
.related-section { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--c-border); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.related-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    color: var(--c-text);
    transition: all var(--transition);
}
.related-card:hover { border-color: var(--c-accent); transform: translateY(-1px); box-shadow: 0 4px 12px var(--c-shadow); color: var(--c-text); }
.related-card__logo { width: 36px; height: 36px; border-radius: 6px; object-fit: contain; }
.related-card__name { font-size: 13px; font-weight: 600; }
.related-card__meta { font-size: 11px; color: var(--c-text-3); }

/* ═══ MODAL ═══ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
.modal-overlay.is-open { opacity: 1; pointer-events: auto; }
.modal {
    background: var(--c-surface);
    border-radius: var(--radius-xl);
    max-width: 540px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.2s;
}
.modal-overlay.is-open .modal { transform: scale(1); }
.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--c-border);
}
.modal__title { font-size: 18px; font-weight: 700; }
.modal__close {
    width: 32px; height: 32px;
    border: none;
    background: var(--c-surface-2);
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    color: var(--c-text-2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.modal__close:hover { background: var(--c-error); color: #fff; }
.modal__body { padding: 24px; }
.modal__footer { padding: 16px 24px; border-top: 1px solid var(--c-border); display: flex; justify-content: flex-end; gap: 8px; }

/* ═══ FORMS ═══ */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--c-text); margin-bottom: 6px; }
.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    font-family: var(--font);
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius);
    background: var(--c-surface);
    color: var(--c-text);
    outline: none;
    transition: border-color var(--transition);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-radio-group { display: flex; flex-direction: column; gap: 8px; }
.form-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--c-text);
    cursor: pointer;
}
.form-radio input { accent-color: var(--c-accent); }
.form-hint { font-size: 12px; color: var(--c-text-3); margin-top: 4px; }
.form-error-msg { font-size: 13px; color: var(--c-error); padding: 10px; background: rgba(239,68,68,0.08); border-radius: var(--radius); margin-bottom: 16px; }

/* ═══ PAGINATION ═══ */
.pagination { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 32px; }
.pagination__link {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    transition: all var(--transition);
}
.pagination__link:hover { border-color: var(--c-accent); color: var(--c-accent); }
.pagination__link.is-active { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }

/* ═══ TOAST ═══ */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
    padding: 12px 20px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px var(--c-shadow-lg);
    font-size: 14px;
    color: var(--c-text);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: toast-in 0.3s ease;
    max-width: 360px;
}
.toast--success { border-left: 3px solid var(--c-success); }
.toast--error { border-left: 3px solid var(--c-error); }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ═══ AUTH PAGES ═══ */
.auth-card {
    max-width: 420px;
    margin: 40px auto;
    padding: 32px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-xl);
}
.auth-card__title { font-size: 24px; font-weight: 700; text-align: center; margin-bottom: 24px; }
.auth-card__footer { text-align: center; margin-top: 16px; font-size: 14px; color: var(--c-text-2); }

/* ═══ FOOTER ═══ */
.site-footer {
    margin-top: auto;
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    padding: 48px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.footer-col__title { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; color: var(--c-text); }
.footer-col__text { font-size: 13px; color: var(--c-text-2); line-height: 1.7; }
.footer-col__list { list-style: none; }
.footer-col__list li { margin-bottom: 6px; }
.footer-col__list a { font-size: 13px; color: var(--c-text-2); }
.footer-col__list a:hover { color: var(--c-accent); }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--c-border);
    font-size: 13px;
    color: var(--c-text-3);
}
.footer-stats { color: var(--c-text-3); }

/* ═══ MOBILE SIDEBAR ═══ */
.mobile-sidebar__overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}
.mobile-sidebar__panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background: var(--c-surface);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}
.mobile-sidebar:not([hidden]) .mobile-sidebar__panel { transform: translateX(0); }
.mobile-sidebar__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--c-border);
}
.mobile-sidebar__close { font-size: 28px; border: none; background: transparent; color: var(--c-text); cursor: pointer; }
.mobile-sidebar__nav { display: flex; flex-direction: column; }
.mobile-sidebar__nav a {
    padding: 14px 20px;
    color: var(--c-text);
    font-size: 15px;
    font-weight: 500;
    border-bottom: 1px solid var(--c-border);
}
.mobile-sidebar__nav a:hover { background: var(--c-surface-2); }

/* ═══ ERROR PAGE ═══ */
.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-size: 48px; font-weight: 800; color: var(--c-text-3); margin-bottom: 12px; }
.error-page p { font-size: 16px; color: var(--c-text-2); margin-bottom: 24px; }

/* ═══ ALPHABET INDEX ═══ */
.alpha-index { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 20px; }
.alpha-index a {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 600;
    color: var(--c-text-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    transition: all var(--transition);
}
.alpha-index a:hover, .alpha-index a.is-active { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }

/* ═══ TRAINER ═══ */
.trainer-card {
    max-width: 600px;
    margin: 40px auto;
    padding: 40px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-xl);
    text-align: center;
}
.trainer-card__progress { margin: 16px 0; height: 8px; background: var(--c-surface-2); border-radius: 100px; overflow: hidden; }
.trainer-card__progress-bar { height: 100%; background: var(--c-accent); border-radius: 100px; transition: width 0.3s; }
.trainer-card__action {
    font-size: 22px;
    font-weight: 700;
    padding: 24px;
    background: var(--c-surface-2);
    border-radius: var(--radius-lg);
    margin: 24px 0;
}
.trainer-card__input {
    padding: 16px;
    font-size: 18px;
    text-align: center;
    font-family: var(--font-mono);
    border: 2px dashed var(--c-border);
    border-radius: var(--radius);
    background: transparent;
    color: var(--c-text);
    width: 100%;
    outline: none;
}
.trainer-card__input:focus { border-color: var(--c-accent); }
.trainer-card__result { margin: 16px 0; font-size: 16px; font-weight: 600; }
.trainer-card__result--correct { color: var(--c-success); }
.trainer-card__result--wrong { color: var(--c-error); }

/* ═══ SKELETON LOADERS ═══ */
.skeleton { background: linear-gradient(90deg, var(--c-surface-2) 25%, var(--c-border) 50%, var(--c-surface-2) 75%); background-size: 200% 100%; animation: skeleton 1.5s infinite; border-radius: var(--radius); }
@keyframes skeleton { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
    .section { padding: 24px 0; }
    .hero { padding: 32px 0 24px; }
    .hero__title { font-size: 28px; }
    .programs-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .program-header__inner { flex-direction: column; align-items: flex-start; }
    .program-header__name { font-size: 22px; }
    .os-switcher { overflow-x: auto; }
    .shortcuts-table { font-size: 13px; width: 100%; }
    .shortcuts-table th, .shortcuts-table td { padding: 8px 6px; }
    .shortcuts-table .col-actions { width: 1%; padding: 4px 2px; }
    .shortcuts-table .col-keys { width: 1%; }
    .shortcuts-table .col-action { width: auto; word-wrap: break-word; }
    .vote-btn span, .report-btn { display: none; }
    .vote-btn { opacity: 0.6; padding: 2px 3px; }
    .vote-btn svg { width: 14px; height: 14px; }
    .related-grid { grid-template-columns: 1fr; }
    kbd, .kbd { min-width: 22px; height: 24px; padding: 2px 5px; font-size: 11px; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .hero__stats { flex-direction: column; gap: 12px; }
}

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

/* ═══ RTL SUPPORT ═══ */
html.rtl .search-bar__icon { left: auto; right: 14px; }
html.rtl .search-bar__form input { padding-left: 16px; padding-right: 42px; }
html.rtl .lang-switcher__dropdown { left: 0; right: auto; }
html.rtl .user-menu__dropdown { left: 0; right: auto; }
html.rtl .toast-container { right: auto; left: 20px; }
html.rtl .toast--success { border-left: none; border-right: 3px solid var(--c-success); }
html.rtl .shortcut-group__title { direction: rtl; }

/* ═══ HOMEPAGE SECTIONS ═══ */

/* Hero stats enhanced */
.hero__stat { text-align: center; }
.hero__stat-label { display: block; font-size: 13px; color: var(--c-text-3); margin-top: 2px; }

/* OS Cards */
.os-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.os-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 28px 20px;
    background: var(--c-surface);
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--c-text);
    transition: all var(--transition);
}
.os-card:hover {
    border-color: var(--c-accent);
    box-shadow: 0 8px 24px var(--c-shadow-lg);
    transform: translateY(-3px);
    color: var(--c-text);
}
.os-card__icon { color: var(--c-accent); }
.os-card__name { font-size: 17px; font-weight: 700; }
.os-card__count { font-size: 13px; color: var(--c-text-2); }

/* Essential Shortcuts */
.section__desc { color: var(--c-text-2); max-width: 600px; margin: -8px auto 24px; text-align: center; }
.essentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}
.essential-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--c-surface);
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius);
    transition: border-color var(--transition);
}
.essential-card:hover { border-color: var(--c-accent); }
.essential-kbd {
    display: inline-block;
    padding: 4px 10px;
    background: var(--c-kbd-bg);
    border: 1px solid var(--c-kbd-border);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    color: var(--c-text);
    box-shadow: 0 2px 0 var(--c-kbd-shadow);
    white-space: nowrap;
    flex-shrink: 0;
}
.essential-desc { font-size: 14px; color: var(--c-text-2); }

/* Category Tags */
.cat-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.cat-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--c-surface);
    border: 1.5px solid var(--c-border);
    border-radius: 100px;
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
}
.cat-tag:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
    background: var(--c-surface-2);
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.benefit-card {
    padding: 24px;
    background: var(--c-surface);
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.benefit-card:hover { border-color: var(--c-accent); transform: translateY(-2px); box-shadow: 0 6px 20px var(--c-shadow); }
.benefit-card__icon { font-size: 32px; margin-bottom: 12px; }
.benefit-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--c-text); }
.benefit-card p { font-size: 14px; color: var(--c-text-2); line-height: 1.6; }

/* FAQ on home (fix for button-based questions) */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    text-align: left;
    padding: 16px 18px;
    background: var(--c-surface);
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font);
    color: var(--c-text);
}
.faq-question svg { flex-shrink: 0; margin-left: 12px; transition: transform var(--transition); color: var(--c-text-3); }
.faq-item.is-open .faq-question svg { transform: rotate(180deg); }

@media (max-width: 600px) {
    .os-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
    .os-card { padding: 20px 12px; }
    .essentials-grid { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; }
}