/* ════════════════════════════════════════════════
   Flashcard Study Modal
   ════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════
   FLASHCARD STUDY MODAL
   ═══════════════════════════════════════════════ */

/* Study item in dropdown */
.fc-study-item { border-bottom: 1px solid rgba(255,255,255,0.06); margin-bottom: 4px; }
.fc-study-item .fc-menu-title { color: var(--accent-light); }
.fc-menu-divider { height: 1px; background: rgba(255,255,255,0.07); margin: 4px 0; }

/* Modal overlay */
.fc-modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fcOverlayIn 0.2s ease;
}
.fc-modal-overlay.hidden { display: none; }
@keyframes fcOverlayIn { from { opacity: 0; } to { opacity: 1; } }

.fc-modal {
    background: var(--card-bg);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 32px 80px rgba(0,0,0,0.6);
    animation: fcModalIn 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes fcModalIn { from { transform: scale(0.92) translateY(16px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }

/* Header */
.fc-modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.fc-modal-title {
    display: flex; align-items: center; gap: 8px;
    font-size: 15px; font-weight: 600; color: var(--text-primary);
    flex: 1; min-width: 0;
}
.fc-modal-title span:last-child {
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fc-modal-meta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.fc-modal-badge {
    font-size: 11px; padding: 2px 8px;
    background: rgba(139,92,246,0.15);
    color: var(--accent-light);
    border-radius: 20px;
    border: 1px solid rgba(139,92,246,0.3);
}
.fc-card-counter { font-size: 12px; color: var(--text-muted); }
.fc-modal-close {
    background: rgba(255,255,255,0.07); border: none;
    color: var(--text-muted); width: 30px; height: 30px;
    border-radius: 8px; cursor: pointer; font-size: 14px;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s; flex-shrink: 0;
}
.fc-modal-close:hover { background: rgba(239,68,68,0.15); color: #f87171; }

/* Progress */
.fc-modal-progress { height: 3px; background: rgba(255,255,255,0.07); }
.fc-modal-progress-fill {
    height: 100%; width: 0%;
    background: linear-gradient(90deg, var(--accent), #a78bfa);
    transition: width 0.4s ease;
}

/* Card area */
.fc-card-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    perspective: 1200px;
}

.fc-card {
    width: 100%; max-width: 560px;
    height: 220px;
    cursor: pointer;
    position: relative;
    transform-style: preserve-3d;
    outline: none;
}
.fc-card:focus-visible { outline: 2px solid var(--accent); border-radius: 16px; }

.fc-card-inner {
    width: 100%; height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.4,0.2,0.2,1);
    border-radius: 16px;
}

.fc-card-front, .fc-card-back {
    position: absolute; inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 16px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 24px 28px;
    gap: 12px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.1);
}
.fc-card-front {
    background: linear-gradient(135deg, rgba(139,92,246,0.12), rgba(99,102,241,0.08));
}
.fc-card-back {
    background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(5,150,105,0.06));
    transform: rotateY(180deg);
    border-color: rgba(16,185,129,0.2);
}

.fc-side-label {
    font-size: 10px; font-weight: 600; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--text-muted);
    position: absolute; top: 12px;
}
.fc-card-back .fc-side-label { color: #34d399; }

.fc-card-text {
    font-size: 14px; line-height: 1.65;
    color: var(--text-primary);
    white-space: pre-line;
    max-height: 160px;
    overflow-y: auto;
    scrollbar-width: none;
    width: 100%;
}
.fc-card-text::-webkit-scrollbar { display: none; }

.fc-flip-hint {
    position: absolute; bottom: 12px;
    font-size: 11px; color: var(--text-muted);
}

/* Controls row */
.fc-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px 16px;
    gap: 12px;
}
.fc-ctrl-btn {
    width: 42px; height: 42px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
}
.fc-ctrl-btn:hover:not([disabled]) { background: rgba(139,92,246,0.2); border-color: var(--accent); }
.fc-ctrl-btn[disabled] { opacity: 0.3; cursor: not-allowed; }
.fc-ctrl-btn svg { width: 18px; height: 18px; }

.fc-rate-btns {
    display: flex; gap: 8px;
    transition: opacity 0.25s;
}
.fc-rate-btn {
    padding: 8px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
    font-size: 12px; font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.fc-rate-hard:hover { background: rgba(239,68,68,0.15); border-color: #ef4444; color: #f87171; }
.fc-rate-ok:hover   { background: rgba(234,179,8,0.15);  border-color: #eab308; color: #fde047; }
.fc-rate-easy:hover { background: rgba(16,185,129,0.15); border-color: #10b981; color: #34d399; }

/* Footer */
.fc-modal-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px 16px;
    border-top: 1px solid rgba(255,255,255,0.06);
    flex-wrap: wrap;
}
.fc-footer-btn {
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
}
.fc-footer-btn:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.fc-footer-btn.active {
    background: rgba(139,92,246,0.2);
    border-color: var(--accent);
    color: var(--accent-light);
}

/* Mobile */
@media (max-width: 480px) {
    .fc-card { height: 200px; }
    .fc-rate-btn { padding: 7px 10px; font-size: 11px; }
    .fc-modal-footer { gap: 6px; }
}