/* =========================================================================
   kids-edu — дизайн система
   Обучителни видеа за деца 6-10 г. Светъл, игрив, цветен; едри заоблени
   форми, висок контраст за четимост, едри тъч таргети (мин. 48px).
   ========================================================================= */

:root {
    /* Палитра */
    --ink:        #1f2a52;   /* основен текст — тъмно синьо, мек контраст */
    --ink-soft:   #5b67a3;
    --bg:         #eaf4ff;   /* небесен фон */
    --bg-2:       #fdf3ff;
    --surface:    #ffffff;   /* картички */
    --primary:    #ff6b6b;   /* корал — CTA */
    --primary-d:  #f03e3e;
    --blue:       #4dabf7;
    --yellow:     #ffd43b;
    --green:      #51cf66;
    --purple:     #9775fa;
    --teal:       #20c997;

    /* Форма и ритъм */
    --radius:     1.5rem;
    --radius-sm:  .85rem;
    --space:      1rem;
    --shadow:     0 .6rem 1.6rem rgba(31, 42, 82, .14);
    --shadow-lg:  0 1.2rem 2.6rem rgba(31, 42, 82, .20);
    --ring:       0 0 0 .25rem rgba(77, 171, 247, .45);

    --font-display: "Fredoka", "Segoe UI", system-ui, sans-serif;
    --font-body:    "Nunito", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--ink);
    background:
        radial-gradient(1200px 500px at 110% -10%, var(--bg-2), transparent 60%),
        radial-gradient(900px 500px at -10% 0%, #e6fcf5, transparent 55%),
        var(--bg);
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

main { flex: 1 0 auto; }

a { color: var(--primary-d); }

h1, h2, h3, .brand {
    font-family: var(--font-display);
    line-height: 1.15;
    color: var(--ink);
}

.container {
    width: min(1120px, 92vw);
    margin-inline: auto;
}

/* ---- Бутони ---------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    min-height: 48px;
    padding: .7rem 1.4rem;
    border: none;
    border-radius: 999px;
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform .12s ease, box-shadow .12s ease;
}
.btn--primary { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn--ghost   { background: #fff; color: var(--ink); box-shadow: var(--shadow); }
.btn--big     { min-height: 60px; padding: .9rem 2rem; font-size: 1.25rem; }
.btn:hover    { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

/* ---- Header ---------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    width: min(1120px, 92vw);
    margin: .8rem auto;
    padding: .6rem 1.2rem;
    background: rgba(255, 255, 255, .85);
    backdrop-filter: blur(10px);
    border-radius: 999px;
    box-shadow: var(--shadow);
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
}
.brand .brand__mark { font-size: 1.7rem; }
.main-nav {
    display: flex;
    align-items: center;
    gap: .35rem;
    margin-inline-start: auto;
    flex-wrap: wrap;
}
.main-nav a {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    min-height: 44px;
    padding: .4rem 1rem;
    border-radius: 999px;
    color: var(--ink);
    font-weight: 700;
    text-decoration: none;
}
.main-nav a:hover { background: #eef4ff; }
.main-nav a.active { background: var(--blue); color: #fff; }

.nav-group { position: relative; }
.nav-children {
    display: none;
    position: absolute;
    inset-inline-start: 0;
    top: 100%;
    min-width: 12rem;
    padding: .4rem;
    background: #fff;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
}
.nav-group:hover .nav-children,
.nav-group:focus-within .nav-children { display: block; }
.nav-children a { width: 100%; }

.lang-switch { display: inline-flex; gap: .25rem; }
.lang-switch a {
    min-width: 44px; min-height: 44px;
    justify-content: center;
    border-radius: 999px;
    font-weight: 700;
    text-decoration: none;
    color: var(--ink);
}
.lang-switch a.active { background: var(--yellow); }

/* ---- Hero ------------------------------------------------------------ */
.hero {
    width: min(1120px, 92vw);
    margin: 1.5rem auto 2.5rem;
    padding: clamp(1.5rem, 5vw, 3.5rem);
    border-radius: var(--radius);
    background: linear-gradient(135deg, #fff4d6, #ffe3ef 55%, #e7f0ff);
    box-shadow: var(--shadow);
    text-align: center;
}
.hero h1 { font-size: clamp(2rem, 6vw, 3.2rem); margin: 0 0 .5rem; }
.hero p  { font-size: clamp(1.05rem, 2.5vw, 1.35rem); margin: 0 auto 1.5rem; max-width: 40ch; color: var(--ink); }

/* ---- Секции ---------------------------------------------------------- */
.section { width: min(1120px, 92vw); margin: 0 auto 2.5rem; }
.section__head {
    display: flex;
    align-items: baseline;
    gap: .75rem;
    margin-bottom: 1.1rem;
}
.section__head h2 { font-size: clamp(1.5rem, 4vw, 2rem); margin: 0; }

/* ---- Видео решетка и карти ------------------------------------------- */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.4rem;
}
.video-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .14s ease, box-shadow .14s ease;
    text-decoration: none;   /* картата е <a> към /watch */
    color: inherit;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.video-card:focus-visible { box-shadow: var(--ring); }

/* Централен play бутон върху thumbnail-а (картата вече е линк, не плейър). */
.video-card__play {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 3.6rem;
    height: 3.6rem;
    display: grid;
    place-items: center;
    font-size: 1.3rem;
    color: #fff;
    background: rgba(0, 0, 0, .38);
    border-radius: 999px;
    pointer-events: none;
}

.video-card__media {
    position: relative;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--c1, var(--blue)), var(--c2, var(--purple)));
}
.video-card__media video,
.video-card__thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    background: transparent;
}
.video-card__thumb {
    position: absolute;
    inset: 0;
}
.video-card__emoji {
    position: absolute;
    top: .7rem;
    inset-inline-end: .7rem;
    width: 2.7rem;
    height: 2.7rem;
    display: grid;
    place-items: center;
    font-size: 1.5rem;
    background: rgba(255, 255, 255, .92);
    border-radius: 999px;
    box-shadow: var(--shadow);
    pointer-events: none;
}
.badge {
    position: absolute;
    top: .7rem;
    inset-inline-start: .7rem;
    padding: .25rem .7rem;
    border-radius: 999px;
    background: rgba(255,255,255,.92);
    color: var(--ink);
    font-family: var(--font-display);
    font-size: .85rem;
    font-weight: 600;
}
.video-card__body { padding: 1rem 1.1rem 1.2rem; }
.video-card__title { font-size: 1.2rem; margin: 0; }

/* ---- Watch страница -------------------------------------------------- */
.watch__player {
    width: 100%;
    max-width: 900px;
    margin: 0 auto 1rem;
    display: block;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    background: #000;
}
.badge--inline { position: static; display: inline-block; }
.watch__lang-switch {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    margin: .5rem 0 1rem;
}
.lang-switch__btn {
    padding: .4rem 1rem;
    border: none;
    border-radius: 999px;
    background: #fff;
    color: var(--ink);
    box-shadow: var(--shadow);
    font-family: var(--font-display);
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform .12s ease, box-shadow .12s ease;
}
.lang-switch__btn:hover { transform: translateY(-1px); }
.lang-switch__btn.is-active { background: var(--primary); color: #fff; box-shadow: var(--shadow-lg); }

/* ---- Категории-плочки ------------------------------------------------ */
.cat-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.2rem;
}
.cat-tile {
    display: flex;
    align-items: center;
    gap: .9rem;
    padding: 1.2rem 1.3rem;
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--ink);
    transition: transform .14s ease;
}
.cat-tile:hover { transform: translateY(-3px); }
.cat-tile__emoji { font-size: 2.4rem; }
.cat-tile__name { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }
.cat-tile__count { color: var(--ink); opacity: .65; font-size: .95rem; }

/* ---- Инфо карти (за родители) ---------------------------------------- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.2rem;
}
.info-card {
    padding: 1.4rem;
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
}
.info-card .info-card__icon { font-size: 2.2rem; }
.info-card h3 { margin: .5rem 0 .4rem; }

.lead {
    width: min(60ch, 92vw);
    margin: 0 auto 2rem;
    font-size: 1.15rem;
    text-align: center;
}

/* ---- Footer ---------------------------------------------------------- */
.site-footer {
    flex-shrink: 0;
    margin-top: 2rem;
    padding: 1.6rem 1rem;
    text-align: center;
    color: var(--ink);
}
.site-footer .brand { font-size: 1.2rem; }

/* ---- Auth форма (login, OTP...) --------------------------------------- */
.auth-card {
    width: 100%;
    max-width: 440px;
    padding: clamp(1.6rem, 5vw, 2.8rem);
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
}
.auth-card__icon { font-size: 2.6rem; line-height: 1; }
.auth-card p.lead-sm { margin: .2rem 0 0; color: var(--ink-soft); font-size: .98rem; }
.auth-card .form-label {
    font-family: var(--font-body);
    font-weight: 700;
    color: var(--ink);
}
.auth-card .form-control {
    min-height: 48px;
    border: 2px solid #e3e8fa;
    border-radius: var(--radius-sm);
    padding-inline: 1rem;
    background: #fff;
    color: var(--ink);
}
.auth-card .form-control:focus {
    border-color: var(--blue);
    box-shadow: var(--ring);
}
.auth-card .input-group-text {
    border: 2px solid #e3e8fa;
    border-inline-end: none;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    background: #fff;
    color: var(--ink-soft);
}
.auth-card .alert {
    border: none;
    border-radius: var(--radius-sm);
    font-size: .95rem;
}
.auth-card .alert-danger { background: #ffe3e3; color: var(--primary-d); }

/* ---- Пагинация ------------------------------------------------------- */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    margin: 2rem 0 .5rem;
}
.pagination__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.4rem;
    height: 2.4rem;
    padding: 0 .7rem;
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--primary);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: transform .15s, box-shadow .15s;
}
.pagination__btn:hover:not(.pagination__btn--disabled):not(.pagination__btn--active) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.pagination__btn--active {
    background: var(--primary);
    color: #fff;
    cursor: default;
}
.pagination__btn--disabled {
    opacity: .35;
    cursor: default;
    box-shadow: none;
}
.pagination__ellipsis {
    color: var(--ink);
    opacity: .5;
    padding: 0 .2rem;
    line-height: 2.4rem;
}
.pagination__info {
    font-size: .85rem;
    color: var(--ink);
    opacity: .6;
    margin-left: .5rem;
}

/* ---- Достъпност ------------------------------------------------------ */
:focus-visible { outline: none; box-shadow: var(--ring); border-radius: .4rem; }
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}