/**
 * Tutorial Overlay Styles
 * 新手引导3步动画教程样式
 */

/* ==================== Overlay ==================== */

.tutorial-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.tutorial-overlay--visible {
    opacity: 1;
    pointer-events: auto;
}

.tutorial-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* ==================== Dialog ==================== */

.tutorial-dialog {
    position: relative;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
    width: 90vw;
    max-width: 460px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 32px 28px 24px;
    transform: translateY(20px) scale(0.96);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tutorial-overlay--visible .tutorial-dialog {
    transform: translateY(0) scale(1);
}

.tutorial-dialog--pulse {
    animation: tutorial-pulse 0.4s ease;
}

@keyframes tutorial-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ==================== Close Button ==================== */

.tutorial-close {
    position: absolute;
    top: 12px;
    right: 14px;
    width: 32px;
    height: 32px;
    border: none;
    background: #f3f4f6;
    border-radius: 50%;
    font-size: 20px;
    color: #6b7280;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    line-height: 1;
}

.tutorial-close:hover {
    background: #e5e7eb;
    color: #111827;
}

/* ==================== Step Indicator ==================== */

.tutorial-step-indicator {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
}

.tutorial-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #e5e7eb;
    transition: all 0.3s ease;
}

.tutorial-dot--active {
    background: #4A6FA5;
    transform: scale(1.3);
    box-shadow: 0 0 0 4px rgba(74, 111, 165, 0.15);
}

.tutorial-dot--done {
    background: #6B9E7E;
}

/* ==================== Content ==================== */

.tutorial-content {
    text-align: center;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.tutorial-icon-wrap {
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.tutorial-icon {
    width: 64px;
    height: 64px;
    color: #4A6FA5;
}

.tutorial-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #1E2D3D;
    margin: 0 0 4px;
    line-height: 1.3;
}

.tutorial-subtitle {
    font-size: 0.9rem;
    color: #6B7A8D;
    margin: 0 0 12px;
}

.tutorial-description {
    font-size: 0.875rem;
    color: #4b5563;
    margin: 0 0 20px;
    line-height: 1.5;
}

/* ==================== Features Grid ==================== */

.tutorial-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    text-align: left;
}

.tutorial-feature {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px;
    background: #f9fafb;
    border-radius: 10px;
    transition: background 0.2s;
}

.tutorial-feature:hover {
    background: #eef2ff;
}

.tutorial-feature-emoji {
    font-size: 1.25rem;
    flex-shrink: 0;
    width: 28px;
    text-align: center;
}

.tutorial-feature-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tutorial-feature-text strong {
    font-size: 0.8rem;
    color: #1E2D3D;
}

.tutorial-feature-text span {
    font-size: 0.7rem;
    color: #9ca3af;
    line-height: 1.3;
}

/* ==================== Actions ==================== */

.tutorial-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    gap: 8px;
}

.tutorial-btn {
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.tutorial-btn--skip {
    background: transparent;
    color: #9ca3af;
    font-weight: 500;
}

.tutorial-btn--skip:hover {
    color: #6b7280;
}

.tutorial-btn--prev {
    background: #f3f4f6;
    color: #4b5563;
}

.tutorial-btn--prev:hover {
    background: #e5e7eb;
}

.tutorial-btn--next {
    background: #4A6FA5;
    color: #fff;
    margin-left: auto;
}

.tutorial-btn--next:hover {
    background: #3d5d8a;
}

.tutorial-btn--finish {
    background: linear-gradient(135deg, #4A6FA5, #6B9E7E);
    color: #fff;
    margin-left: auto;
    padding: 10px 28px;
    font-size: 0.9rem;
}

.tutorial-btn--finish:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* ==================== Mobile Responsive ==================== */

@media (max-width: 480px) {
    .tutorial-dialog {
        width: 94vw;
        padding: 24px 20px 20px;
        border-radius: 16px;
    }

    .tutorial-title {
        font-size: 1.15rem;
    }

    .tutorial-features {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .tutorial-feature {
        padding: 8px;
    }

    .tutorial-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
}