/* Landing: intro + login – tik neprisijungusiems */
.landing-wrap {
    min-height: 100vh;
    min-height: 100dvh;
    background: linear-gradient(45deg, black, var(--main-color));
    color: white;
    display: flex;
    flex-direction: column;
}

.intro-section {
    padding: 2rem 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.intro-section h2.intro-heading {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    text-align: center;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.intro-section .intro-subheading {
    text-align: center;
    font-size: clamp(0.9rem, 2vw, 1.05rem);
    opacity: 0.92;
    margin-bottom: 2rem;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.intro-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s, background 0.2s;
}

.intro-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.intro-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.intro-card p {
    font-size: 0.9rem;
    line-height: 1.45;
    opacity: 0.9;
    flex-grow: 1;
    margin-bottom: 0.75rem;
}

.intro-img-wrap {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 0.75rem;
    aspect-ratio: 16/10;
    background: rgba(0, 0, 0, 0.3);
}

.intro-img-wrap .intro-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.25s;
    display: block;
}

/* Kai nuotrauka neįsikėlė (404 ar dar neįkelta) – placeholder tekstas */
.intro-img-wrap.intro-img-placeholder::after {
    content: attr(data-placeholder);
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 0.5rem;
}

.intro-img-wrap.intro-img-placeholder .intro-img {
    opacity: 0;
    position: absolute;
}

.intro-img-wrap .intro-img:hover {
    transform: scale(1.03);
}

.intro-img-wrap .intro-img-hint {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.6);
    color: rgba(255, 255, 255, 0.85);
    text-align: center;
    pointer-events: none;
}

/* Login form blokas landing kontekste – ne užima viso ekrano aukščio */
.landing-wrap #login-form {
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 1rem 2rem;
    height: auto;
    min-height: 0;
}

.landing-wrap #login-form h2 {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
}

.landing-wrap #login-form h1 {
    font-size: clamp(2rem, 6vw, 4rem);
}

.landing-wrap #login-form h3 {
    font-size: clamp(0.85rem, 2vw, 1rem);
}

/* Fullscreen modal – paveikslėlių didinimui (index.php) */
#modalFullscreen {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    transform: none;
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}

#modalFullscreen.is-open {
    opacity: 1;
    pointer-events: auto;
}

#modalFullscreen button {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
}

#modalFullscreen img {
    max-width: 90vw;
    max-height: 85vh;
    width: auto;
    height: auto;
    object-fit: contain;
    position: relative;
    z-index: 1;
    pointer-events: none;
}

#modalFullscreen .modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    z-index: 2;
    transition: background 0.2s;
}

#modalFullscreen .modal-close-btn:hover,
#modalFullscreen .modal-close-btn:focus-visible {
    background: rgba(255, 255, 255, 0.25);
}

#modalFullscreen .modal-close-btn svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

@media (width <= 700px) {
    .intro-section {
        padding: 1.5rem 0.75rem 1rem;
    }
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
        margin-bottom: 1.5rem;
    }
    .intro-card {
        padding: 1rem;
    }
    .landing-wrap #login-form {
        padding: 1rem 0.75rem 1.5rem;
    }
}