/* =====================================================
   استوديو الإعلام الجامعي - الحركات والتأثيرات
   University Radio Studio - Animations CSS
   ===================================================== */

/* ─── Fade In / Up ─── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(.93); }
    to   { opacity: 1; transform: scale(1); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* ─── Scroll Reveal base ─── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease;
}
.reveal.revealed {
    opacity: 1;
    transform: none;
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }
.reveal-delay-5 { transition-delay: .5s; }

/* ─── Hero Entrance ─── */
.hero__badge   { animation: fadeInDown .5s .1s both; }
.hero__title   { animation: fadeInUp  .6s .2s both; }
.hero__text    { animation: fadeInUp  .6s .35s both; }
.hero__actions { animation: fadeInUp  .6s .45s both; }

/* ─── Cards hover glow ─── */
.video-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: 0 0 0 0 rgba(204,0,0,.3);
    transition: box-shadow .3s ease;
    pointer-events: none;
}
.video-card { position: relative; }
.video-card:hover::after {
    box-shadow: 0 0 0 2px rgba(204,0,0,.3);
}

/* ─── Animated Border (section labels) ─── */
@keyframes labelSlide {
    from { transform: scaleX(0); transform-origin: right; }
    to   { transform: scaleX(1); transform-origin: right; }
}
.section__label::before { animation: labelSlide .4s .3s both; }
.section__label::after  { animation: labelSlide .4s .5s both; transform-origin: left; }

/* ─── Wave text (hero) ─── */
@keyframes waveChar {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-6px); }
}

/* ─── Pulse ring (for live indicator) ─── */
@keyframes pulseRing {
    0%   { transform: scale(.9); box-shadow: 0 0 0 0 rgba(204,0,0,.6); }
    70%  { transform: scale(1);  box-shadow: 0 0 0 12px rgba(204,0,0,0); }
    100% { transform: scale(.9); box-shadow: 0 0 0 0 rgba(204,0,0,0); }
}
.pulse-ring { animation: pulseRing 1.8s ease-out infinite; }

/* ─── Counter animation ─── */
.stat-item__number { transition: color .3s; }

/* ─── Equalizer bars (radio) ─── */
.eq-bars {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 22px;
}
.eq-bar {
    width: 3px;
    border-radius: 2px;
    background: var(--red);
    animation: eqAnim 1s ease-in-out infinite;
}
.eq-bar:nth-child(1) { animation-delay: 0s;    height: 40%; }
.eq-bar:nth-child(2) { animation-delay: .15s;  height: 70%; }
.eq-bar:nth-child(3) { animation-delay: .3s;   height: 55%; }
.eq-bar:nth-child(4) { animation-delay: .45s;  height: 85%; }
.eq-bar:nth-child(5) { animation-delay: .6s;   height: 50%; }
.eq-bar.paused { animation-play-state: paused; }

@keyframes eqAnim {
    0%, 100% { transform: scaleY(1); }
    50%       { transform: scaleY(.3); }
}

/* ─── Image shimmer (loading placeholder) ─── */
.shimmer {
    background: linear-gradient(90deg,
        var(--light-gray) 25%,
        var(--mid-gray)   50%,
        var(--light-gray) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ─── Page transition ─── */
.page-content {
    animation: fadeIn .4s ease both;
}

/* ─── Feature items entrance ─── */
.feature-item {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity .5s ease, transform .5s ease;
}
.feature-item.revealed {
    opacity: 1;
    transform: none;
}

/* ─── Rotating icon ─── */
@keyframes spin {
    to { transform: rotate(360deg); }
}
.spin { animation: spin 2s linear infinite; }