html, body { margin: 0; padding: 0; min-height: 100%; }
body { overflow-x: hidden; -webkit-tap-highlight-color: transparent; }
.progress-transition { transition: width 1s cubic-bezier(0.4, 0, 0.2, 1); }
.yolk-shadow { box-shadow: 0 16px 40px rgba(13, 106, 55, 0.08); }
.fade-in { animation: fadeIn 0.3s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* --- Dialog & Modal transitions (M3 emphasized easing) --- */
#dialog, #tnc-modal { transition: opacity 0.25s cubic-bezier(0.2, 0, 0, 1); opacity: 0; pointer-events: none; }
#dialog .dialog-panel, #tnc-modal .dialog-panel {
    transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1), opacity 0.25s cubic-bezier(0.2, 0, 0, 1);
    transform: scale(0.92) translateY(8px); opacity: 0;
}
#dialog.dialog-open, #tnc-modal.dialog-open { opacity: 1; pointer-events: auto; }
#dialog.dialog-open .dialog-panel, #tnc-modal.dialog-open .dialog-panel { transform: scale(1) translateY(0); opacity: 1; }

/* --- Skeleton shimmer --- */
@keyframes shimmer { 0% { background-position: -400px 0; } 100% { background-position: 400px 0; } }
.skeleton {
    background: linear-gradient(90deg, #e1e5df 0%, #f0f2ef 50%, #e1e5df 100%);
    background-size: 800px 100%;
    animation: shimmer 1.4s linear infinite;
    border-radius: 12px;
}

/* --- PIN dot bounce --- */
@keyframes dotBounce { 0% { transform: scale(1); } 50% { transform: scale(1.4); } 100% { transform: scale(1); } }
.pin-dot { transition: background-color 0.15s ease-out; }
.pin-dot.filled { background: #0d6a37; animation: dotBounce 0.22s ease-out; }

/* --- Hero reward state --- */
.reward-glow {
    box-shadow: 0 0 0 4px rgba(252, 195, 20, 0.15), 0 20px 50px rgba(252, 195, 20, 0.35);
    animation: rewardPulse 2.5s ease-in-out infinite;
}
@keyframes rewardPulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(252, 195, 20, 0.15), 0 20px 50px rgba(252, 195, 20, 0.35); }
    50%      { box-shadow: 0 0 0 8px rgba(252, 195, 20, 0.25), 0 25px 60px rgba(252, 195, 20, 0.50); }
}
@keyframes giftBounce {
    0%, 100% { transform: translateY(0) rotate(-4deg); }
    50%      { transform: translateY(-6px) rotate(4deg); }
}
.gift-wiggle { display: inline-block; animation: giftBounce 1.4s ease-in-out infinite; transform-origin: center bottom; }

/* --- History scroll fade edges --- */
.history-scroll {
    mask-image: linear-gradient(to bottom, transparent 0, #000 16px, #000 calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 16px, #000 calc(100% - 24px), transparent 100%);
}

/* --- Milestone overlay: egg crack + yolk pop --- */
#milestone { transition: opacity 0.3s ease-out; opacity: 0; pointer-events: none; }
#milestone.milestone-active { opacity: 1; pointer-events: auto; }
.egg-shell { width: 120px; height: 160px; position: relative; margin: 0 auto; }
.egg-half {
    position: absolute; left: 0; width: 120px; height: 78px;
    background: linear-gradient(135deg, #fff8e0 0%, #fce9a1 65%, #f5d67a 100%);
    box-shadow: inset -6px 0 16px rgba(200, 150, 20, 0.18), 0 4px 12px rgba(0, 0, 0, 0.2);
}
.egg-top { top: 0; border-radius: 60px 60px 8px 8px; transform-origin: 50% 100%; }
.egg-btm { bottom: 0; border-radius: 8px 8px 60px 60px; transform-origin: 50% 0%; }
.milestone-active .egg-top { animation: eggTopCrack 0.7s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards; }
.milestone-active .egg-btm { animation: eggBtmCrack 0.7s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards; }
@keyframes eggTopCrack { 0% { transform: rotate(0) translate(0, 0); } 100% { transform: rotate(-35deg) translate(-50px, -30px); } }
@keyframes eggBtmCrack { 0% { transform: rotate(0) translate(0, 0); } 100% { transform: rotate(35deg) translate(50px, 30px); } }

.yolk-badge {
    position: absolute; top: 50%; left: 50%; width: 110px; height: 110px; border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #ffd94a 0%, #fcc314 55%, #d79908 100%);
    box-shadow: 0 0 40px rgba(252, 195, 20, 0.7), inset -8px -8px 16px rgba(200, 130, 0, 0.3);
    display: flex; align-items: center; justify-content: center;
    color: #0d6a37; font-weight: 900; font-size: 14px; letter-spacing: 0.05em; text-align: center;
    transform: translate(-50%, -50%) scale(0); opacity: 0;
}
.milestone-active .yolk-badge { animation: yolkPop 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.7s forwards; }
@keyframes yolkPop {
    0%   { transform: translate(-50%, -50%) scale(0); opacity: 0; }
    60%  { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

/* --- Unified Button System --- */
.btn-primary {
    width: 100%;
    background-color: #0d6a37; /* primary */
    color: #ffffff; /* white */
    border-radius: 0.75rem; /* rounded-xl */
    padding-top: 1rem;
    padding-bottom: 1rem;
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.btn-primary:active {
    transform: scale(0.95);
}

.btn-primary:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    filter: brightness(1.1);
}

.btn-primary:disabled {
    background-color: #e5e7eb;
    color: #9ca3af;
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.5;
}

@media (min-width: 768px) {
    .btn-primary {
        padding-top: 0.875rem;
        padding-bottom: 0.875rem;
        font-size: 0.75rem;
    }
}

.btn-secondary {
    width: 100%;
    background-color: #ffffff;
    border: 2px solid #e5e7eb;
    color: #1f2937;
    border-radius: 1rem;
    padding: 1.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s;
    cursor: pointer;
}

.btn-secondary:hover {
    border-color: #0d6a37;
    color: #0d6a37;
}

.btn-choice {
    width: 100%;
    background-color: #ffffff;
    border: 2px solid #f3f4f6;
    color: #1f2937;
    border-radius: 1.5rem;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.2s;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(13, 106, 55, 0.05);
}

@media (min-width: 768px) {
    .btn-choice {
        padding: 1rem 1.25rem;
    }
}

.btn-choice:hover {
    border-color: #0d6a37;
    color: #0d6a37;
}

.shadow-yolk { box-shadow: 0 8px 30px rgba(13, 106, 55, 0.05); }

/* --- 3D Card Animation --- */
/* Physical card proportions. Golden Yolk is 3.5x2in (landscape); the PYC card
   is 2x3.5in (portrait), so it gets its own ratio and a narrower box -- at full
   width a portrait card would be ~580px tall. Matching the ratio to the artwork
   means object-fit: cover crops nothing. */
.card-scene { width: 100%; aspect-ratio: 7 / 4; perspective: 1000px; margin-bottom: 24px; }
.card-scene--portrait { width: 190px; aspect-ratio: 4 / 7; margin-left: auto; margin-right: auto; }
.card-container {
    width: 100%; height: 100%; position: relative;
    transform-style: preserve-3d;
    animation: autoFlip 8s infinite linear;
}
@keyframes autoFlip {
    0% { transform: rotateY(0deg); }
    40% { transform: rotateY(0deg); }
    50% { transform: rotateY(180deg); }
    90% { transform: rotateY(180deg); }
    100% { transform: rotateY(360deg); }
}
.card-face {
    position: absolute; width: 100%; height: 100%;
    backface-visibility: hidden;
    display: flex; align-items: center; justify-content: center;
    border-radius: 16px; overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.card-front { background: #fff; }
.card-back { background: #0d6a37; transform: rotateY(180deg); }
.card-img { width: 100%; height: 100%; object-fit: cover; }