/* ========================================
   Guide Page - Cyberpunk Theme
   ======================================== */

/* Header */
header {
    padding: 1.5rem 2rem;
    background: rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn-secondary {
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-surface);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary-dim);
}

.guide-container {
    max-width: 1200px;
    width: 90%;
    margin: 2rem auto 3rem;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* Navigation Sidebar */
.guide-nav {
    position: sticky;
    top: 1.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-align: left;
}

.nav-item:last-child {
    margin-bottom: 0;
}

.nav-item:hover {
    background: var(--color-surface);
    color: var(--color-text);
}

.nav-item.active {
    background: var(--color-primary);
    color: var(--color-bg);
    font-weight: 600;
}

.nav-item svg {
    flex-shrink: 0;
}

/* Content Area */
.guide-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    min-height: 500px;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-section h2 {
    color: var(--color-primary);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--color-primary-dim);
    padding-bottom: 0.75rem;
}

.content-section h3 {
    color: var(--color-text);
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-section h4 {
    color: var(--color-text);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

/* Introduction Section */
.intro-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.intro-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    border-color: var(--color-primary-dim);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

/* Step Cards */
.step-card {
    display: flex;
    align-items: start;
    gap: 1rem;
    padding: 1.25rem;
    margin-bottom: 1rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateX(5px);
    border-left: 3px solid var(--color-primary);
}

.step-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: var(--color-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.step-content p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.step-content code {
    background: var(--color-bg);
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
    color: var(--color-primary);
    font-weight: 600;
}

/* Info Boxes */
.info-box,
.warning-box,
.success-box {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
}

.info-box {
    background: rgba(129, 140, 248, 0.1);
    border-left: 3px solid var(--color-secondary);
}

.warning-box {
    background: rgba(251, 191, 36, 0.1);
    border-left: 3px solid var(--color-warning);
}

.success-box {
    background: rgba(74, 222, 128, 0.1);
    border-left: 3px solid var(--color-success);
}

.info-box svg,
.warning-box svg,
.success-box svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.info-box p,
.warning-box p,
.success-box p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* Credits Section */
.credit-intro {
    background: var(--color-surface);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.credit-intro p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.credit-method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.credit-method {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
}

.credit-method:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.credit-method.disabled {
    filter: grayscale(100%);
    opacity: 0.5;
    cursor: not-allowed;
}

.credit-method.disabled:hover {
    transform: none;
    box-shadow: none;
}

.dev-tag {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-text-muted);
    color: var(--color-bg);
    border-radius: 0.75rem;
    font-size: 0.7rem;
    font-weight: 700;
}

.method-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.credit-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0.75rem 0;
}

.usage-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.usage-item {
    display: flex;
    align-items: start;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    position: relative;
}

.usage-item.disabled {
    filter: grayscale(100%);
    opacity: 0.5;
}

.usage-item.disabled .dev-tag {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
}

.usage-icon {
    flex-shrink: 0;
    font-size: 2rem;
}

.usage-detail {
    flex: 1;
}

.usage-detail h4 {
    margin-top: 0;
    margin-bottom: 0.375rem;
    color: var(--color-text);
}

.usage-detail p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.usage-detail strong {
    color: var(--color-primary);
}

/* Line Bot Section */
.linebot-intro {
    background: var(--color-surface);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.linebot-intro p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.linebot-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.linebot-feature {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.linebot-feature:hover {
    transform: translateY(-3px);
}

.linebot-feature .feature-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

/* Gameplay Section */
.gameplay-intro {
    background: var(--color-surface);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.gameplay-intro p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

.tip-card {
    padding: 1.25rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.tip-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.tip-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.tip-card h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.tip-card p {
    margin: 0;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* FAQ Section */
.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-left: 3px solid var(--color-primary);
}

.faq-item h4 {
    color: var(--color-text);
    margin: 0 0 0.75rem 0;
    font-size: 1rem;
    font-weight: 700;
}

.faq-answer {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.faq-answer p {
    margin: 0 0 0.5rem 0;
}

.faq-answer ul {
    margin: 0.5rem 0;
    padding-left: 1.25rem;
}

.faq-answer li {
    margin-bottom: 0.375rem;
}

.faq-answer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.faq-answer a:hover {
    text-decoration: underline;
}

#faq h3 {
    color: var(--color-text);
    margin: 2rem 0 1rem 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#faq h3:first-of-type {
    margin-top: 0;
}

/* Responsive Design */
@media (max-width: 968px) {
    .guide-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .guide-nav {
        position: sticky;
        top: 0;
        z-index: 100;
        display: flex;
        overflow-x: auto;
        padding: 0.75rem;
        gap: 0.5rem;
        /* 隱藏 scrollbar 保持視覺乾淨 */
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .guide-nav::-webkit-scrollbar {
        display: none;
    }

    .nav-item {
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.75rem 1rem;
        margin-bottom: 0;
        white-space: nowrap;
        font-size: 0.8rem;
    }

    .nav-item svg {
        width: 18px;
        height: 18px;
    }

    .guide-content {
        padding: 1.5rem;
    }

    .content-section h2 {
        font-size: 1.4rem;
    }

    .content-section h3 {
        font-size: 1.1rem;
    }

    .feature-grid,
    .credit-method-grid,
    .linebot-feature-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .guide-container {
        width: 95%;
    }

    .guide-content {
        padding: 1.25rem;
    }

    .intro-card {
        padding: 1.25rem;
    }

    .step-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}