/* Installation-specific styles */
.installation-main {
    padding: 60px 0;
}

.installation-header {
    text-align: center;
    margin-bottom: 50px;
}

.installation-header h1 {
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-bottom: 15px;
}

.installation-header p {
    font-size: 1.2rem;
    color: var(--dark-gray);
    margin-bottom: 40px;
}

.installation-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto 50px;
}

.option-card {
    background: var(--white);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.option-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.option-card i {
    font-size: 3rem;
    color: var(--primary-yellow);
    margin-bottom: 20px;
}

.option-card h3 {
    color: var(--dark-blue);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.option-card p {
    color: var(--dark-gray);
    margin-bottom: 25px;
}

.cta-btn {
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--accent-orange) 100%);
    color: var(--dark-blue);
    padding: 12px 25px;
    font-weight: bold;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

/* Safety Warning */
.safety-warning {
    margin-bottom: 40px;
}

.warning-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 2px solid var(--warning);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.warning-box i {
    font-size: 2rem;
    color: var(--warning);
    margin-top: 5px;
}

.warning-content h3 {
    color: var(--dark-blue);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.warning-content ul {
    list-style: none;
    color: var(--dark-gray);
}

.warning-content li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.warning-content li::before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: var(--warning);
}

/* Installation Guide */
.installation-guide {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 50px;
}

.installation-guide h2 {
    color: var(--dark-blue);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 30px;
}

/* Step Selector */
.step-selector {
    display: flex;
    background: var(--light-gray);
    border-radius: 15px;
    padding: 5px;
    margin-bottom: 40px;
    overflow-x: auto;
}

.step-btn {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    font-weight: 600;
    color: var(--dark-gray);
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 120px;
}

.step-btn.active {
    background: var(--primary-yellow);
    color: var(--dark-blue);
    transform: translateY(-2px);
}

.step-btn:hover:not(.active) {
    background: rgba(255, 215, 0, 0.3);
}

/* Installation Steps */
.installation-step {
    display: none;
}

.installation-step.active {
    display: block;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.step-number {
    background: var(--primary-yellow);
    color: var(--dark-blue);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.step-header h3 {
    color: var(--dark-blue);
    font-size: 1.8rem;
    margin: 0;
}

.step-content {
    padding-left: 70px;
}

.step-section {
    margin-bottom: 30px;
}

.step-section h4 {
    color: var(--dark-blue);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.step-section h5 {
    color: var(--dark-blue);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.requirements-list {
    list-style: none;
    margin-bottom: 20px;
}

.requirements-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--dark-gray);
}

.requirements-list i {
    color: var(--success);
}

.instruction-list {
    color: var(--dark-gray);
    padding-left: 20px;
}

.instruction-list li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 10px;
}

.tool-item i {
    font-size: 1.5rem;
    color: var(--primary-yellow);
}

.tool-item span {
    font-weight: 600;
    color: var(--dark-blue);
}

/* Contents List */
.contents-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.content-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 10px;
}

.content-item i {
    font-size: 1.5rem;
    color: var(--primary-yellow);
    margin-top: 3px;
}

.content-item strong {
    color: var(--dark-blue);
    display: block;
    margin-bottom: 5px;
}

.content-item p {
    color: var(--dark-gray);
    margin: 0;
    font-size: 0.9rem;
}

/* Size-Specific Information */
.size-specific {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
}

.size-guide h4 {
    color: var(--dark-blue);
    margin-bottom: 20px;
}

.size-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.size-tab {
    padding: 10px 20px;
    background: var(--white);
    border: 2px solid var(--primary-yellow);
    border-radius: 20px;
    color: var(--dark-blue);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.size-tab.active {
    background: var(--primary-yellow);
}

.size-info {
    display: none;
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
}

.size-info.active {
    display: block;
}

.size-info p {
    margin-bottom: 8px;
    color: var(--dark-gray);
}

.size-info strong {
    color: var(--dark-blue);
}

/* Safety Reminder */
.safety-reminder {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 2px solid var(--error);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.safety-reminder i {
    color: var(--error);
    font-size: 1.2rem;
}

.safety-reminder strong {
    color: var(--error);
}

/* Connection Options */
.connection-options {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 25px;
    margin: 20px 0;
}

.connection-tab-container {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.connection-tab {
    padding: 12px 25px;
    background: var(--white);
    border: 2px solid var(--primary-yellow);
    border-radius: 20px;
    color: var(--dark-blue);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.connection-tab.active {
    background: var(--primary-yellow);
}

.connection-content {
    display: none;
}

.connection-content.active {
    display: block;
}

.connectivity-tips {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.connectivity-tips h5 {
    color: var(--dark-blue);
    margin-bottom: 10px;
}

.connectivity-tips ul {
    list-style: none;
    color: var(--dark-gray);
}

.connectivity-tips li {
    margin-bottom: 5px;
    padding-left: 15px;
    position: relative;
}

.connectivity-tips li::before {
    content: "💡";
    position: absolute;
    left: 0;
}

/* Configuration Grid */
.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.config-item {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.config-item i {
    font-size: 2rem;
    color: var(--primary-yellow);
    margin-bottom: 10px;
}

.config-item h5 {
    color: var(--dark-blue);
    margin-bottom: 8px;
}

.config-item p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Testing Checklist */
.testing-checklist {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
}

.testing-checklist .checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.testing-checklist .checkbox-label:hover {
    background: rgba(255, 215, 0, 0.2);
    border-radius: 5px;
    padding-left: 10px;
}

.testing-checklist input[type="checkbox"]:checked + span {
    text-decoration: line-through;
    opacity: 0.6;
}

/* Support Section */
.support-section {
    text-align: center;
}

.support-section h2 {
    color: var(--dark-blue);
    font-size: 2rem;
    margin-bottom: 40px;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.support-card {
    background: var(--white);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.support-card i {
    font-size: 3rem;
    color: var(--primary-yellow);
    margin-bottom: 20px;
}

.support-card h3 {
    color: var(--dark-blue);
    margin-bottom: 15px;
}

.support-card p {
    color: var(--dark-gray);
    margin-bottom: 20px;
}

.support-link {
    color: var(--light-blue);
    text-decoration: none;
    font-weight: 600;
    padding: 10px 20px;
    border: 2px solid var(--light-blue);
    border-radius: 20px;
    transition: all 0.3s ease;
    display: inline-block;
}

.support-link:hover {
    background: var(--light-blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .installation-options {
        grid-template-columns: 1fr;
    }
    
    .step-selector {
        flex-direction: column;
    }
    
    .step-btn {
        min-width: auto;
    }
    
    .step-content {
        padding-left: 0;
    }
    
    .step-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .config-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .size-tabs {
        flex-wrap: wrap;
    }
    
    .connection-tab-container {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .installation-guide {
        padding: 20px;
    }
    
    .warning-box {
        flex-direction: column;
        text-align: center;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
    }
}