/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #ffffff;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Black & Yellow Theme */
:root {
    --black: #1a1a1a;
    --black-light: #2d2d2d;
    --black-lighter: #3d3d3d;
    --yellow: #ffd700;
    --yellow-dark: #e6c200;
    --yellow-light: #fff9c4;
    --white: #ffffff;
    --gray: #666666;
    --green: #4CAF50;
    --red: #f44336;
    --orange: #FF9800;
    --blue: #2196F3;
}

/* Header Styles */
.header {
    background: var(--black-light);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    border-left: 6px solid var(--yellow);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.logo h1 {
    color: var(--yellow);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 3rem;
    color: var(--yellow);
    margin-bottom: 1rem;
    display: block;
}

.tagline {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Tool Card Styles */
.tool-card {
    background: var(--black-light);
    border-radius: 15px;
    padding: 2rem;
    border: 1px solid var(--black-lighter);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 215, 0, 0.1);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--yellow);
}

.tool-header h3 {
    color: var(--yellow);
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tool-actions {
    display: flex;
    gap: 0.5rem;
}

/* Button Styles */
.primary-btn {
    background: linear-gradient(135deg, var(--yellow), var(--yellow-dark));
    color: var(--black);
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

.download-btn {
    background: var(--black-lighter);
    color: var(--white);
    border: 2px solid var(--yellow);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-btn:hover {
    background: var(--yellow);
    color: var(--black);
}

.reset-btn {
    background: transparent;
    color: var(--gray);
    border: 2px solid var(--gray);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.reset-btn:hover {
    background: var(--gray);
    color: var(--white);
}

/* Form Styles */
.tool-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group label {
    color: var(--yellow);
    margin-bottom: 0.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group input,
.form-group select {
    background: var(--black);
    border: 2px solid var(--black-lighter);
    color: var(--white);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--yellow);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

/* SEO Score Container */
.seo-score-container {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    align-items: center;
}

.score-circle {
    text-align: center;
    padding: 2rem;
}

.score-value {
    font-size: 3rem;
    font-weight: bold;
    color: var(--yellow);
    margin-bottom: 0.5rem;
}

.score-label {
    color: var(--gray);
    font-size: 1rem;
}

.score-breakdown {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.score-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.score-category {
    color: var(--white);
    font-weight: 500;
    min-width: 120px;
}

.score-bar {
    flex: 1;
    height: 8px;
    background: var(--black);
    border-radius: 4px;
    overflow: hidden;
}

.score-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--yellow), var(--yellow-dark));
    transition: width 1s ease-in-out;
}

.score-percent {
    color: var(--yellow);
    font-weight: bold;
    min-width: 40px;
    text-align: right;
}

/* Issues and Recommendations */
.issues-count, .recommendations-count {
    background: var(--red);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.recommendations-count {
    background: var(--green);
}

.issues-list, .recommendations-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.issue-item, .recommendation-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--black);
    border-radius: 8px;
    border: 1px solid var(--black-lighter);
}

.issue-icon, .recommendation-icon {
    color: var(--red);
    font-size: 1.2rem;
    margin-top: 0.2rem;
}

.recommendation-icon {
    color: var(--green);
}

.issue-content, .recommendation-content {
    flex: 1;
}

.issue-title, .recommendation-title {
    color: var(--white);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.issue-description, .recommendation-description {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Meta Analysis */
.meta-analysis {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--black);
    border-radius: 8px;
    border: 1px solid var(--black-lighter);
}

.meta-label {
    color: var(--yellow);
    font-weight: 600;
    min-width: 150px;
}

.meta-value {
    flex: 1;
    color: var(--white);
    word-break: break-all;
}

.meta-status {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    min-width: 80px;
    text-align: center;
}

.status-good {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
}

.status-warning {
    background: rgba(255, 152, 0, 0.2);
    color: #FF9800;
}

.status-bad {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.metric-card {
    background: var(--black);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--black-lighter);
    transition: all 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: var(--yellow);
}

.metric-icon {
    font-size: 2rem;
    color: var(--yellow);
    margin-bottom: 1rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--yellow);
    margin-bottom: 0.5rem;
}

.metric-label {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.metric-change {
    font-weight: bold;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

.positive {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
}

.negative {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
}

.neutral {
    background: rgba(102, 102, 102, 0.2);
    color: var(--gray);
}

/* Technical Grid */
.technical-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.technical-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--black);
    border-radius: 8px;
    border: 1px solid var(--black-lighter);
}

.tech-label {
    color: var(--white);
    font-weight: 500;
}

.tech-value {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Loading Animation */
.loading-section {
    animation: fadeIn 0.5s ease-in;
}

.loading-content {
    text-align: center;
    padding: 3rem 2rem;
}

.loading-spinner {
    font-size: 3rem;
    color: var(--yellow);
    margin-bottom: 1.5rem;
}

.loading-spinner .fa-spin {
    animation: spin 1s linear infinite;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--black);
    border-radius: 3px;
    margin-top: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--yellow), var(--yellow-dark));
    border-radius: 3px;
    animation: progressAnimation 2s ease-in-out infinite;
}

.loading-steps {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 2rem;
}

.step {
    padding: 0.8rem;
    background: var(--black);
    border-radius: 8px;
    border: 1px solid var(--black-lighter);
    color: var(--gray);
    transition: all 0.3s ease;
}

.step.active {
    border-color: var(--yellow);
    color: var(--yellow);
    background: rgba(255, 215, 0, 0.1);
}

/* Animations */
@keyframes progressAnimation {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        padding: 1.5rem;
    }

    .logo h1 {
        font-size: 2rem;
    }

    .tool-card {
        padding: 1.5rem;
    }

    .tool-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .tool-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .seo-score-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .technical-grid {
        grid-template-columns: 1fr;
    }

    .meta-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .meta-label {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .score-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .score-bar {
        width: 100%;
    }
}