/**
 * Tutorial System Styles
 * Zeid-Rosenberg Eigenvalue Explorer
 */

/* =====================================================
   OVERLAY & SPOTLIGHT
   ===================================================== */

.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tutorial-overlay.active {
    opacity: 1;
    /* Keep pointer-events: none so clicks pass through to highlighted elements */
    pointer-events: none;
}

/* Dark backdrop is created by spotlight's box-shadow, no ::before needed */
/* For steps without a target, we add a separate backdrop */
.tutorial-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    z-index: 1;
    pointer-events: none;
}

.tutorial-spotlight {
    position: absolute;
    z-index: 2;
    border-radius: 8px;
    box-shadow: 
        0 0 0 9999px rgba(0, 0, 0, 0.75),
        0 0 20px 5px rgba(74, 158, 255, 0.4),
        inset 0 0 0 2px rgba(74, 158, 255, 0.6);
    transition: all 0.3s ease;
    pointer-events: none;
}

/* =====================================================
   DIALOG BOX
   ===================================================== */

.tutorial-dialog {
    position: absolute;
    z-index: 3;
    width: 380px;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 3px solid #4a9eff;
    border-radius: 12px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(74, 158, 255, 0.2);
    overflow: hidden;
    transition: box-shadow 0.2s ease, opacity 0.2s ease;
    pointer-events: auto; /* Allow clicking dialog buttons */
    display: flex;
    flex-direction: column;
}

/* Thicker border hit area for edge dragging */
.tutorial-dialog::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    border: 8px solid transparent;
    border-radius: 16px;
    pointer-events: auto;
    z-index: -1;
}

.tutorial-content {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
    max-height: 60vh;
}

.tutorial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(74, 158, 255, 0.15);
    border-bottom: 1px solid rgba(74, 158, 255, 0.3);
    cursor: grab;
    user-select: none;
}

.tutorial-header:active {
    cursor: grabbing;
}

.tutorial-drag-hint {
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
    letter-spacing: 2px;
    margin-left: auto;
    padding-left: 10px;
}

.tutorial-dialog.dragging {
    opacity: 0.9;
    box-shadow: 
        0 15px 50px rgba(0, 0, 0, 0.6),
        0 0 40px rgba(74, 158, 255, 0.3);
}

.tutorial-tour-name {
    font-size: 12px;
    font-weight: 600;
    color: #4a9eff;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tutorial-step-counter {
    font-size: 11px;
    color: #888;
}

.tutorial-title {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
}

.tutorial-description {
    font-size: 14px;
    color: #ccc;
    line-height: 1.6;
}

.tutorial-description p {
    margin: 0 0 10px 0;
}

.tutorial-description p:last-child {
    margin-bottom: 0;
}

.tutorial-description ul {
    margin: 8px 0;
    padding-left: 20px;
}

.tutorial-description li {
    margin: 6px 0;
}

.tutorial-description strong {
    color: #4a9eff;
}

.tutorial-description code {
    background: rgba(74, 158, 255, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-size: 13px;
    color: #7ec8ff;
}

.tutorial-action-hint {
    margin-top: 16px;
    padding: 12px;
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 8px;
    font-size: 13px;
    color: #ffc107;
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-indicator {
    font-size: 18px;
    animation: pulse 1.5s infinite;
}

.action-complete {
    color: #4caf50;
    font-size: 18px;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

/* =====================================================
   FOOTER & BUTTONS
   ===================================================== */

.tutorial-footer {
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tutorial-progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-bottom: 12px;
    overflow: hidden;
}

.tutorial-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4a9eff, #00d4aa);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.tutorial-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.tutorial-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutorial-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.tutorial-btn-prev,
.tutorial-btn-next {
    background: rgba(74, 158, 255, 0.2);
    color: #4a9eff;
    border: 1px solid rgba(74, 158, 255, 0.3);
}

.tutorial-btn-prev:hover:not(:disabled),
.tutorial-btn-next:hover:not(:disabled) {
    background: rgba(74, 158, 255, 0.3);
    transform: translateY(-1px);
}

.tutorial-btn-skip {
    background: transparent;
    color: #888;
    border: 1px solid transparent;
}

.tutorial-btn-skip:hover {
    color: #ff6b6b;
    border-color: rgba(255, 107, 107, 0.3);
}

.tutorial-btn-primary {
    background: linear-gradient(135deg, #4a9eff 0%, #00d4aa 100%);
    color: #fff;
    border: none;
    padding: 10px 24px;
}

.tutorial-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 158, 255, 0.4);
}

/* =====================================================
   HELP BUTTON
   ===================================================== */

.tutorial-help-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4a9eff 0%, #00d4aa 100%);
    border: none;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 
        0 4px 15px rgba(74, 158, 255, 0.4),
        0 0 20px rgba(74, 158, 255, 0.2);
    transition: all 0.3s ease;
}

.tutorial-help-btn:hover {
    transform: scale(1.1);
    box-shadow: 
        0 6px 25px rgba(74, 158, 255, 0.5),
        0 0 30px rgba(74, 158, 255, 0.3);
}

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

/* =====================================================
   TUTORIAL MENU
   ===================================================== */

.tutorial-menu {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 360px;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 120px);
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 1px solid #4a9eff;
    border-radius: 12px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(74, 158, 255, 0.2);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tutorial-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.tutorial-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: rgba(74, 158, 255, 0.15);
    border-bottom: 1px solid rgba(74, 158, 255, 0.3);
}

.tutorial-menu-header span {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
}

.tutorial-menu-close {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: #888;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutorial-menu-close:hover {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
}

.tutorial-menu-content {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.tutorial-menu-section {
    margin-bottom: 8px;
}

.tutorial-menu-section-title {
    font-size: 11px;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 12px 4px;
}

.tutorial-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutorial-menu-item:hover {
    background: rgba(74, 158, 255, 0.15);
}

.tutorial-menu-item.completed {
    opacity: 0.7;
}

.tutorial-menu-item.completed:hover {
    opacity: 1;
}

.tutorial-menu-icon {
    font-size: 24px;
    width: 36px;
    text-align: center;
}

.tutorial-menu-info {
    flex: 1;
}

.tutorial-menu-name {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 2px;
}

.tutorial-menu-desc {
    font-size: 12px;
    color: #888;
}

.tutorial-menu-status {
    width: 24px;
    text-align: center;
    color: #4caf50;
    font-size: 16px;
}

.tutorial-menu-footer {
    padding: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tutorial-menu-links {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
}

.tutorial-menu-link {
    flex: 1;
    padding: 8px 12px;
    background: rgba(74, 158, 255, 0.1);
    border: 1px solid rgba(74, 158, 255, 0.3);
    border-radius: 6px;
    color: #4a9eff;
    text-decoration: none;
    font-size: 13px;
    text-align: center;
    transition: all 0.2s ease;
}

.tutorial-menu-link:hover {
    background: rgba(74, 158, 255, 0.2);
    border-color: #4a9eff;
    color: #fff;
}

.tutorial-btn-reset {
    width: 100%;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: #888;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tutorial-btn-reset:hover {
    background: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
    border-color: rgba(255, 107, 107, 0.3);
}

/* =====================================================
   COMPLETION OVERLAY
   ===================================================== */

.tutorial-completion {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tutorial-completion.active {
    opacity: 1;
}

.tutorial-completion-dialog {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 1px solid #4a9eff;
    border-radius: 16px;
    box-shadow: 
        0 10px 40px rgba(0, 0, 0, 0.5),
        0 0 60px rgba(74, 158, 255, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.tutorial-completion.active .tutorial-completion-dialog {
    transform: scale(1);
}

.tutorial-completion-icon {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounce 0.5s ease;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.tutorial-completion-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.tutorial-completion-message {
    font-size: 16px;
    color: #ccc;
    margin-bottom: 24px;
}

/* =====================================================
   RESPONSIVE ADJUSTMENTS
   ===================================================== */

@media (max-width: 768px) {
    .tutorial-dialog {
        width: calc(100vw - 32px);
        max-height: 60vh;
        overflow-y: auto;
    }
    
    .tutorial-menu {
        width: calc(100vw - 32px);
        right: 16px;
        bottom: 72px;
    }
    
    .tutorial-help-btn {
        width: 44px;
        height: 44px;
        font-size: 20px;
        right: 16px;
        bottom: 16px;
    }
}

/* =====================================================
   CUSTOM SCROLLBAR
   ===================================================== */

.tutorial-menu-content::-webkit-scrollbar {
    width: 6px;
}

.tutorial-menu-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.tutorial-menu-content::-webkit-scrollbar-thumb {
    background: rgba(74, 158, 255, 0.3);
    border-radius: 3px;
}

.tutorial-menu-content::-webkit-scrollbar-thumb:hover {
    background: rgba(74, 158, 255, 0.5);
}

/* =====================================================
   HIGHLIGHT ANIMATION FOR TARGET ELEMENTS
   ===================================================== */

.tutorial-highlight-pulse {
    animation: highlight-pulse 2s infinite;
}

@keyframes highlight-pulse {
    0%, 100% { 
        box-shadow: 0 0 0 0 rgba(74, 158, 255, 0.4);
    }
    50% { 
        box-shadow: 0 0 0 10px rgba(74, 158, 255, 0);
    }
}

/* =====================================================
   TOOLTIP ARROWS (for positioned dialogs)
   ===================================================== */

.tutorial-dialog[data-position="right"]::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    border: 8px solid transparent;
    border-right-color: #4a9eff;
}

.tutorial-dialog[data-position="left"]::before {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    border: 8px solid transparent;
    border-left-color: #4a9eff;
}

.tutorial-dialog[data-position="bottom"]::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-bottom-color: #4a9eff;
}

.tutorial-dialog[data-position="top"]::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: #4a9eff;
}