/* ===== TUTORIAL OVERLAY ===== */
#tutorial-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    font-family: 'Segoe UI', Arial, sans-serif;
}

#tutorial-overlay.hidden {
    display: none;
}

.tutorial-box {
    background: linear-gradient(160deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
    border: 2px solid #e94560;
    border-radius: 16px;
    width: min(900px, 95vw);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(233, 69, 96, 0.3), 0 0 120px rgba(15, 52, 96, 0.5);
}

/* HEADER */
.tutorial-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px 14px;
    border-bottom: 1px solid rgba(233, 69, 96, 0.3);
    background: rgba(233, 69, 96, 0.08);
}

.tutorial-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #e94560;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(233, 69, 96, 0.6);
    margin: 0;
}

.tutorial-page-indicator {
    display: flex;
    gap: 8px;
}

.tutorial-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    transition: all 0.3s;
    cursor: default;
}

.tutorial-dot.active {
    background: #e94560;
    border-color: #e94560;
    box-shadow: 0 0 8px rgba(233, 69, 96, 0.8);
}

/* CONTENT */
.tutorial-content {
    display: flex;
    flex: 1;
    gap: 0;
    overflow: hidden;
    min-height: 0;
}

/* TEXT SIDE */
.tutorial-text-panel {
    flex: 1;
    padding: 28px 30px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    overflow-y: auto;
    min-width: 0;
}

.tutorial-section-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #f0c040;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin: 0 0 16px 0;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(240, 192, 64, 0.25);
    text-shadow: 0 0 12px rgba(240, 192, 64, 0.4);
}

.tutorial-description {
    color: #c8d8e8;
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 20px;
}

.tutorial-keys-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tutorial-keys-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #c8d8e8;
    font-size: 0.88rem;
}

.tutorial-keys-list li .arrow {
    color: #7ec8e3;
    font-size: 1rem;
}

.key-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid rgba(233, 69, 96, 0.5);
    border-radius: 6px;
    padding: 3px 9px;
    font-size: 0.82rem;
    font-weight: 700;
    color: #e94560;
    letter-spacing: 1px;
    white-space: nowrap;
    min-width: 36px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(233, 69, 96, 0.2);
    font-family: 'Courier New', monospace;
}

.tutorial-note {
    background: rgba(240, 192, 64, 0.08);
    border-left: 3px solid #f0c040;
    border-radius: 0 8px 8px 0;
    padding: 10px 14px;
    color: #f0c040;
    font-size: 0.84rem;
    line-height: 1.5;
    margin-top: 10px;
}

.tutorial-note strong {
    color: #ffe066;
}

/* VIDEO SIDE */
.tutorial-video-panel {
    width: 340px;
    min-width: 240px;
    background: rgba(0,0,0,0.4);
    border-left: 1px solid rgba(233, 69, 96, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    flex-shrink: 0;
}

.tutorial-video-panel video {
    width: 100%;
    max-height: 320px;
    border-radius: 10px;
    border: 1px solid rgba(233, 69, 96, 0.3);
    box-shadow: 0 0 30px rgba(0,0,0,0.6);
    object-fit: contain;
    background: #000;
    display: block;
}

/* FOOTER */
.tutorial-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    border-top: 1px solid rgba(233, 69, 96, 0.2);
    background: rgba(0,0,0,0.2);
    gap: 12px;
}

.tutorial-btn-donotshow {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.45);
    font-size: 0.78rem;
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
}

.tutorial-btn-donotshow:hover {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.7);
    border-color: rgba(255,255,255,0.35);
}

.tutorial-nav {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.tutorial-btn-back,
.tutorial-btn-next {
    padding: 9px 22px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    border: none;
    outline: none;
}

.tutorial-btn-back {
    background: rgba(255,255,255,0.08);
    color: #c8d8e8;
    border: 1px solid rgba(255,255,255,0.2);
}

.tutorial-btn-back:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
}

.tutorial-btn-next {
    background: linear-gradient(135deg, #e94560, #c0183a);
    color: #fff;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
}

.tutorial-btn-next:hover {
    background: linear-gradient(135deg, #ff5a77, #e94560);
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.6);
    transform: translateY(-1px);
}

.tutorial-btn-next.finish {
    background: linear-gradient(135deg, #4caf50, #2d8f30);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
}

.tutorial-btn-next.finish:hover {
    background: linear-gradient(135deg, #66bb6a, #4caf50);
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.6);
}

/* PAGE SLIDE TRANSITION */
.tutorial-page {
    display: none;
}
.tutorial-page.active {
    display: flex;
}

/* Responsive */
@media (max-width: 640px) {
    .tutorial-content {
        flex-direction: column-reverse;
    }
    .tutorial-video-panel {
        width: 100%;
        min-width: unset;
        border-left: none;
        border-bottom: 1px solid rgba(233, 69, 96, 0.2);
        padding: 14px;
    }
    .tutorial-video-panel video {
        max-height: 180px;
    }
    .tutorial-text-panel {
        padding: 18px 18px;
    }
}