/* ============================================================
   Campaign Boost — premium glowing ring for trending cards
   ------------------------------------------------------------
   Dipakai di resources/views/home.blade.php pada thumbnail
   campaign yang di-boost (class .boosted-ring).

   Palet: brand primary #26B06F + shade turunan + gold accent
   tipis sebagai penanda "premium/boosted".

   Susunan lapisan:
     .boosted-ring          -> container, scale breathing halus
     .boosted-ring::after   -> halo blur berputar di belakang
     .boosted-ring::before  -> ring conic-gradient berputar (tepi)
     .boosted-ring__shine   -> sapuan cahaya diagonal (butuh 1 <span> tambahan)
     .boosted-ring__spark   -> glint kecil berkedip di sudut (butuh <span>)
   ============================================================ */

@property --boost-angle {
    syntax: '<angle>';
    initial-value: 0deg;
    inherits: false;
}

@property --boost-glow-alpha {
    syntax: '<number>';
    initial-value: 0.35;
    inherits: false;
}

@keyframes boost-ring-spin {
    to {
        --boost-angle: 360deg;
    }
}

@keyframes boost-ring-spin-reverse {
    to {
        --boost-angle: -360deg;
    }
}

@keyframes boost-breathe {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.015);
    }
}

@keyframes boost-glow-pulse {

    0%,
    100% {
        box-shadow:
            0 0 10px rgba(38, 176, 111, .35),
            0 0 3px rgba(38, 176, 111, .30);
    }

    50% {
        box-shadow:
            0 0 24px rgba(38, 176, 111, .65),
            0 0 10px rgba(212, 175, 55, .35);
    }
}

@keyframes boost-shine-sweep {
    0% {
        transform: translateX(-120%) translateY(-120%) rotate(25deg);
        opacity: 0;
    }

    8% {
        opacity: .55;
    }

    35% {
        opacity: 0;
    }

    100% {
        transform: translateX(120%) translateY(120%) rotate(25deg);
        opacity: 0;
    }
}

@keyframes boost-spark-blink {

    0%,
    100% {
        opacity: 0;
        transform: scale(.4) rotate(0deg);
    }

    50% {
        opacity: 1;
        transform: scale(1) rotate(90deg);
    }
}

.boosted-ring {
    position: relative;
    border-radius: 0.85rem;
    isolation: isolate;
    overflow: hidden;
    animation:
        boost-glow-pulse 2.8s ease-in-out infinite,
        boost-breathe 3.6s ease-in-out infinite;
}

/* Ring utama: pseudo-element bermask, hanya tepi ~3px yang tampak
   sehingga bagian tengah tetap transparan & thumbnail terlihat. */
.boosted-ring::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 3px;
    background: conic-gradient(from var(--boost-angle),
            #26B06F, #6EE7B7, #D4AF37, #26B06F, #0E7A4C, #26B06F);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: boost-ring-spin 3.2s linear infinite;
    pointer-events: none;
    z-index: 2;
}

/* Halo warna di belakang ring, arah putaran dibalik agar
   terasa lebih dinamis / tidak "kaku" mengikuti ring utama. */
.boosted-ring::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: conic-gradient(from var(--boost-angle),
            #26B06F, #D4AF37, #6EE7B7, #26B06F);
    filter: blur(9px);
    opacity: .45;
    animation: boost-ring-spin-reverse 4.5s linear infinite;
    pointer-events: none;
    z-index: -1;
}

/* Sapuan cahaya diagonal yang lewat di atas thumbnail sesekali.
   Tambahkan <span class="boosted-ring__shine"></span> di dalam
   .boosted-ring, tepat setelah <img> thumbnail. */
.boosted-ring__shine {
    position: absolute;
    inset: -50%;
    width: 40%;
    background: linear-gradient(75deg,
            transparent 0%,
            rgba(255, 255, 255, .0) 35%,
            rgba(255, 255, 255, .65) 50%,
            rgba(255, 255, 255, .0) 65%,
            transparent 100%);
    animation: boost-shine-sweep 4.2s ease-in-out infinite;
    animation-delay: 1s;
    pointer-events: none;
    z-index: 3;
    mix-blend-mode: screen;
}

/* Glint kecil di pojok kanan-atas, kesan "berkilau" ala badge premium.
   Tambahkan <span class="boosted-ring__spark"></span>. */
.boosted-ring__spark {
    position: absolute;
    top: 8px;
    right: 10px;
    width: 10px;
    height: 10px;
    z-index: 4;
    pointer-events: none;
    background:
        radial-gradient(circle, #fff 0%, rgba(255, 255, 255, 0) 70%);
    -webkit-mask: polygon(50% 0%, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0% 50%, 40% 40%);
    mask: polygon(50% 0%, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0% 50%, 40% 40%);
    animation: boost-spark-blink 2.4s ease-in-out infinite;
}

/* Fallback untuk browser tanpa @property: ring statis tapi tetap rapi. */
@supports not (background: conic-gradient(from 0deg, red, blue)) {

    .boosted-ring::before,
    .boosted-ring::after {
        background: linear-gradient(135deg, #26B06F, #6EE7B7, #D4AF37);
    }
}

/* Hormati preferensi pengguna yang meminimalkan animasi. */
@media (prefers-reduced-motion: reduce) {

    .boosted-ring,
    .boosted-ring::before,
    .boosted-ring::after,
    .boosted-ring__shine,
    .boosted-ring__spark {
        animation: none;
    }
}