/* ============================================================
   Animations & Transitions
   ============================================================ */

/* ── Page / panel transitions ── */
.page-enter {
    animation: page-slide-in var(--transition-base) forwards;
}
.page-leave {
    animation: page-fade-out var(--transition-fast) forwards;
}
@keyframes page-slide-in {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes page-fade-out {
    to { opacity: 0; }
}

/* ── Medal popup ── */
.medal-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 600;
    background: rgba(0,0,0,.5);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fade-in var(--transition-base);
}
.medal-popup {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    max-width: 320px;
    width: 90%;
    animation: pop-up var(--transition-slow) cubic-bezier(.34, 1.56, .64, 1);
    box-shadow: var(--shadow-lg);
}
.medal-popup .medal-emoji {
    font-size: 5rem;
    line-height: 1;
    margin-bottom: var(--space-4);
    animation: medal-spin 1s ease-out;
}
.medal-popup h2 { font-size: var(--font-size-xl); font-weight: 700; margin-bottom: var(--space-2); }
.medal-popup p  { font-size: var(--font-size-sm); color: var(--text-muted); margin-bottom: var(--space-5); }
@keyframes pop-up {
    from { opacity: 0; transform: scale(.6) translateY(30px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes medal-spin {
    0%   { transform: rotateY(0); }
    50%  { transform: rotateY(180deg) scale(1.2); }
    100% { transform: rotateY(360deg); }
}

/* ── Register popup ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 400;
    background: rgba(0,0,0,.5);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    animation: fade-in var(--transition-fast);
}
.modal-sheet {
    background: var(--surface);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: var(--space-6) var(--space-5) calc(var(--space-6) + var(--safe-bottom));
    width: 100%;
    max-width: var(--app-max-width);
    animation: sheet-up var(--transition-base) ease;
}
@keyframes sheet-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}
.modal-drag-bar {
    width: 40px; height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin: 0 auto var(--space-4);
}

/* ── Streak milestone confetti burst ── */
@keyframes confetti-fall {
    0%   { transform: translateY(-20px) rotate(0deg); opacity: 1; }
    100% { transform: translateY(80px) rotate(360deg); opacity: 0; }
}
.confetti-piece {
    position: fixed;
    width: 8px; height: 8px;
    border-radius: 2px;
    pointer-events: none;
    animation: confetti-fall 1.2s ease-in forwards;
    z-index: 700;
}

/* ── Read button success animation ── */
.btn-read-gospel.animating {
    animation: read-success .5s ease forwards;
}
@keyframes read-success {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.06); }
    100% { transform: scale(1); }
}

/* ── Shimmer loading skeleton ── */
.skeleton {
    background: linear-gradient(90deg, #e8e8e8 25%, #f0f0f0 50%, #e8e8e8 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
.skeleton-text  { height: 14px; width: 100%; margin-bottom: 8px; }
.skeleton-title { height: 22px; width: 70%; margin-bottom: 12px; }
.skeleton-block { height: 100px; width: 100%; margin-bottom: 12px; }
@keyframes shimmer {
    from { background-position: 200% 0; }
    to   { background-position: -200% 0; }
}

@keyframes fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}