:root {
    /* Paleta odvozena z loga BMS News */
    --bms-navy: #0d3b6e;
    --bms-navy-deep: #07294f;
    --bms-blue: #1b75bc;
    --bms-azure: #2ba6e0;
    --bms-sky: #59c6f2;
    --bms-ink: #0b2540;

    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-bg-strong: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(255, 255, 255, 0.65);
    --glass-shadow: 0 18px 50px -18px rgba(7, 41, 79, 0.45);
    --glass-blur: saturate(160%) blur(18px);

    --text-strong: #0b2540;
    --text-muted: #44607d;

    --bs-primary: var(--bms-blue);
    --bs-link-color: var(--bms-blue);
    --bs-link-hover-color: var(--bms-navy);
}

* {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    color: var(--text-strong);
    background-color: #eaf4fc;
    background-image:
        radial-gradient(circle at 12% 18%, rgba(89, 198, 242, 0.55), transparent 42%),
        radial-gradient(circle at 88% 8%, rgba(27, 117, 188, 0.45), transparent 40%),
        radial-gradient(circle at 78% 82%, rgba(43, 166, 224, 0.40), transparent 45%),
        radial-gradient(circle at 20% 92%, rgba(13, 59, 110, 0.30), transparent 48%),
        linear-gradient(160deg, #f3f9ff 0%, #e2f0fb 55%, #d4e9f8 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
}

/* ====== Navbar ====== */
.bms-navbar {
    background: rgba(11, 37, 64, 0.55) !important;
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 30px -18px rgba(7, 41, 79, 0.6);
}

.bms-navbar .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    letter-spacing: 0.2px;
}

.bms-navbar .navbar-brand img {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.bms-navbar .navbar-text {
    color: rgba(255, 255, 255, 0.82);
}

/* ====== Hero ====== */
.bms-hero {
    position: relative;
    overflow: hidden;
    margin-top: 1.5rem;
    width: 100%;
    padding: clamp(2rem, 4vw, 3.5rem);
    border-radius: 28px;
    background: var(--glass-bg);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.bms-hero::after {
    content: "";
    position: absolute;
    inset: auto -60px -120px auto;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(43, 166, 224, 0.55), transparent 70%);
    filter: blur(10px);
    z-index: 0;
}

.bms-hero > * {
    position: relative;
    z-index: 1;
}

.bms-hero .hero-logo {
    height: clamp(90px, 14vw, 140px);
    width: auto;
    filter: drop-shadow(0 12px 28px rgba(13, 59, 110, 0.30));
}

.bms-title {
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(120deg, var(--bms-navy) 0%, var(--bms-blue) 45%, var(--bms-azure) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--bms-navy);
}

.bms-lead {
    color: var(--text-muted);
    max-width: 60ch;
}

/* ====== Karty clanku ====== */
.article-card {
    position: relative;
    border: 1px solid var(--glass-border) !important;
    border-radius: 20px !important;
    background: var(--glass-bg-strong) !important;
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.article-card:hover {
    transform: translateY(-6px);
    border-color: rgba(43, 166, 224, 0.7) !important;
    box-shadow: 0 26px 60px -20px rgba(7, 41, 79, 0.55);
}

.article-image {
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: linear-gradient(135deg, var(--bms-azure), var(--bms-navy));
}

.article-image-placeholder {
    aspect-ratio: 16 / 9;
    width: 100%;
    background: linear-gradient(135deg, var(--bms-sky) 0%, var(--bms-blue) 45%, var(--bms-navy) 100%);
}

.article-card .card-title a {
    color: var(--text-strong);
    transition: color 0.2s ease;
}

.article-card:hover .card-title a {
    color: var(--bms-blue);
}

.card-text {
    color: var(--text-muted) !important;
}

.read-more {
    color: var(--bms-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: gap 0.2s ease;
}

.article-card:hover .read-more {
    gap: 0.65rem;
}

.btn-tts {
    position: relative;
    z-index: 2;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid rgba(27, 117, 188, 0.3);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.65);
    color: var(--bms-blue);
    cursor: pointer;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    box-shadow: 0 4px 12px -8px rgba(7, 41, 79, 0.45);
    transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-tts:hover,
.btn-tts:focus-visible {
    background: linear-gradient(120deg, var(--bms-blue), var(--bms-azure));
    border-color: transparent;
    color: #fff;
    transform: scale(1.05);
    box-shadow: 0 8px 18px -10px rgba(27, 117, 188, 0.65);
}

.btn-tts.is-speaking {
    background: linear-gradient(120deg, var(--bms-blue), var(--bms-azure));
    border-color: transparent;
    color: #fff;
    animation: tts-pulse 1.4s ease-in-out infinite;
}

.btn-tts:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-tts-icon {
    width: 1.1rem;
    height: 1.1rem;
    fill: currentColor;
}

.lang-flag {
    border-radius: 3px;
    box-shadow: 0 1px 4px rgba(7, 41, 79, 0.35);
    display: inline-block;
    margin-left: 0.5rem;
    margin-right: 0.5rem;
}

@keyframes tts-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(43, 166, 224, 0.45);
    }

    50% {
        box-shadow: 0 0 0 8px rgba(43, 166, 224, 0);
    }
}

/* ====== Stitky ====== */
.bms-tag {
    background: rgba(43, 166, 224, 0.12);
    border: 1px solid rgba(27, 117, 188, 0.25);
    color: var(--bms-navy);
    font-weight: 500;
}

.bms-tag-solid {
    background: linear-gradient(120deg, var(--bms-blue), var(--bms-azure));
    color: #fff;
    border: none;
}

/* ====== Detail clanku ====== */
.article-panel {
    border: 1px solid var(--glass-border);
    border-radius: 26px;
    background: var(--glass-bg-strong);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
}

.article-hero {
    max-height: 345px;
    width: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, var(--bms-azure), var(--bms-navy));
}

.article-hero-placeholder {
    height: clamp(135px, 24vw, 345px);
    width: 100%;
    background: linear-gradient(135deg, var(--bms-sky) 0%, var(--bms-blue) 45%, var(--bms-navy) 100%);
}

.article-body {
    font-size: 1.075rem;
    line-height: 1.8;
    color: #1d3855;
}

.article-body p {
    margin-bottom: 1.25rem;
}

/* ====== Tlacitka ====== */
.btn-bms {
    background: linear-gradient(120deg, var(--bms-blue), var(--bms-azure));
    border: none;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 10px 24px -12px rgba(27, 117, 188, 0.8);
}

.btn-bms:hover {
    color: #fff;
    filter: brightness(1.06);
    transform: translateY(-1px);
}

.btn-bms-ghost {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.15rem;
    border-radius: 50rem;
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(27, 117, 188, 0.35);
    color: var(--bms-navy);
    font-weight: 600;
    text-decoration: none;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    box-shadow: 0 6px 18px -10px rgba(7, 41, 79, 0.45);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.25s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-bms-ghost .btn-arrow {
    display: inline-block;
    font-size: 1.1em;
    line-height: 1;
    transition: transform 0.2s ease;
}

.btn-bms-ghost:hover,
.btn-bms-ghost:focus-visible {
    background: linear-gradient(120deg, var(--bms-blue), var(--bms-azure));
    border-color: transparent;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 14px 30px -12px rgba(27, 117, 188, 0.65);
}

.btn-bms-ghost:hover .btn-arrow,
.btn-bms-ghost:focus-visible .btn-arrow {
    transform: translateX(-4px);
}

/* ====== Footer ====== */
.bms-footer {
    margin-top: 3rem;
    background: rgba(11, 37, 64, 0.55);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    color: rgba(255, 255, 255, 0.78);
}

.bms-footer a {
    color: var(--bms-sky);
}

/* ====== Stavove hlasky ====== */
.glass-alert {
    border-radius: 18px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg-strong);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
    color: var(--text-strong);
}

/* Fallback pro prohlizece bez backdrop-filter */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .bms-hero,
    .article-card,
    .article-panel,
    .glass-alert {
        background: rgba(255, 255, 255, 0.92) !important;
    }

    .bms-navbar,
    .bms-footer {
        background: var(--bms-navy-deep) !important;
    }
}