/* =============================================================
   BIKE HERO — bike-detail.php
   Load this AFTER styles.css
   ============================================================= */

.bike-hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 560px;

    overflow: hidden;
    background-color: var(--clr-navy-dark);
}

.bike-hero-bg {
    position: absolute;
    inset: 0;

    background-size: cover;
    background-position: center;

    transition: filter 0.5s ease;
}

.bike-hero-scrim {
    position: absolute;
    inset: 0;
    pointer-events: none;

    background: linear-gradient(180deg,
            rgba(8, 13, 18, 0.15) 0%,
            rgba(8, 13, 18, 0.05) 35%,
            rgba(8, 13, 18, 0.55) 78%,
            rgba(8, 13, 18, 0.92) 100%);

    transition: background 0.5s ease;
}

.bike-hero.panel-open .bike-hero-bg {
    filter: brightness(0.55) saturate(0.9);
}

.bike-hero.panel-open .bike-hero-scrim {
    background: rgba(8, 13, 18, 0.72);
}

/* ---- headline ---- */

.bike-hero-top {
    position: relative;
    z-index: 2;

    padding-top: calc(var(--header-height) + 64px);
    text-align: center;
}

.bike-hero-title {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;

    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 5rem);
    line-height: 1.05;

    color: var(--clr-white);
    text-shadow: 0 6px 30px rgba(0, 0, 0, 0.55);
}

/* ---- toggle button (+ / -) ---- */

.bike-hero-toggle {
    position: absolute;
    left: 50%;
    bottom: 42px;
    transform: translateX(-50%);
    z-index: 5;

    width: 46px;
    height: 46px;
    border-radius: 50%;

    display: flex;
    align-items: center;
    justify-content: center;

    background: rgba(18, 26, 38, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(4px);

    cursor: pointer;
    transition: border-color 0.25s ease, bottom 0.4s ease;
}

.bike-hero-toggle:hover {
    border-color: var(--clr-orange);
}

.bike-hero-toggle-icon {
    position: relative;
    width: 16px;
    height: 16px;
}

.bike-hero-toggle-icon .bar {
    position: absolute;
    background: var(--clr-white);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.25s ease;
}

.bike-hero-toggle-icon .bar-h {
    top: 7px;
    left: 0;
    width: 16px;
    height: 2px;
}

.bike-hero-toggle-icon .bar-v {
    top: 0;
    left: 7px;
    width: 2px;
    height: 16px;
}

/* + collapses to - when the panel opens */
.bike-hero.panel-open .bike-hero-toggle-icon .bar-v {
    transform: scaleY(0);
    opacity: 0;
}

/* ---- sliding description panel ---- */

.bike-hero-panel {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 3;

    max-height: 0;
    overflow: hidden;

    background: linear-gradient(180deg,
            rgba(8, 13, 18, 0) 0%,
            rgba(8, 13, 18, 0.85) 22%,
            var(--clr-navy-dark) 60%);

    transition: max-height 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.bike-hero.panel-open .bike-hero-panel {
    max-height: 70vh;
}

.bike-hero-panel-inner {
    padding: 90px 0 56px;
    text-align: center;

    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s ease 0.15s, transform 0.4s ease 0.15s;
}

.bike-hero.panel-open .bike-hero-panel-inner {
    opacity: 1;
    transform: translateY(0);
}

.bike-hero-panel-head {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 14px;
}

.bike-hero-panel-name {
    margin: 0;

    font-family: var(--font-body);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: 0.4px;
    color: var(--clr-white);
}

.bike-hero-panel-tag {
    padding: 4px 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);

    font-family: var(--font-body);
    font-size: 0.68rem;
    letter-spacing: 1px;
    color: var(--clr-gray-light);
}

.bike-hero-panel-hashtag {
    margin: 0 0 22px;

    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--clr-orange);
}

.bike-hero-panel-desc {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 24px 50px;

    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--clr-gray-light);
}

/* ---- mobile ---- */

@media (max-width: 991px) {
    .bike-hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .bike-hero-toggle {
        bottom: 26px;
    }

    .bike-hero.panel-open .bike-hero-panel {
        max-height: 80vh;
        overflow-y: auto;
    }

    .bike-hero-panel-inner {
        padding: 56px 0 40px;
    }
}