/* Meta Tag Checker Specific Styles */
:root {
    --color-primary: #4F46E5;
    --color-primary-dark: #4338CA;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;
    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F9FAFB;
    --color-border: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 0.5rem;
}

/* Header Styles */
.header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.2s;
}

.nav__logo:hover {
    opacity: 0.8;
}

.nav__link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav__link:hover {
    color: var(--color-primary-dark);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-text);
    margin: 0 0 1rem;
    line-height: 1.2;
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 42rem;
    margin: 0 auto;
    line-height: 1.6;
}

/* Checker Section */
.checker-section {
    margin: 2rem 0;
}

.checker-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    max-width: 48rem;
    margin: 0 auto;
}

/* Form Styles */
.meta-form {
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
}

.form-input {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-input::placeholder {
    color: #9CA3AF;
}

.form-help {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    text-decoration: none;
}

.btn--primary {
    background: var(--color-primary);
    color: white;
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--primary:disabled {
    background: #9CA3AF;
    cursor: not-allowed;
    transform: none;
}

.btn--secondary {
    background: white;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
    background: var(--color-primary);
    color: white;
}

.btn__icon {
    width: 20px;
    height: 20px;
}

/* Loading Section */
.loading-section {
    max-width: 32rem;
    margin: 3rem auto;
}

.loading-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 3rem 2rem;
    text-align: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

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

.loading-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 0.5rem;
}

.loading-subtext {
    color: var(--color-text-light);
    margin: 0;
}

/* Error Section */
.error-section {
    max-width: 32rem;
    margin: 3rem auto;
}

.error-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 3rem 2rem;
    text-align: center;
}

.error-icon {
    margin: 0 auto 1.5rem;
    color: var(--color-error);
}

.error-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 0.75rem;
}

.error-message {
    color: var(--color-text-light);
    margin: 0 0 1.5rem;
    line-height: 1.6;
}

/* Results Section */
.results-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
    max-width: 64rem;
    margin-left: auto;
    margin-right: auto;
}

.result-card {
    background: var(--color-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 2rem;
}

.result-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title-icon {
    color: var(--color-primary);
    flex-shrink: 0;
}

/* Summary Card */
.summary-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.summary-header {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.summary-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: white;
    word-break: break-all;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.stat-value--success {
    color: #86EFAC;
}

.stat-value--warning {
    color: #FCD34D;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tags Grid */
.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.tag-item {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    transition: all 0.2s;
}

.tag-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.tag-item--missing {
    background: #FEF3C7;
    border-color: #FCD34D;
}

.tag-item--warning {
    border-color: var(--color-warning);
    border-width: 2px;
}

.tag-warnings {
    margin-top: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tag-warning {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.813rem;
    line-height: 1.4;
}

.tag-warning svg {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.tag-warning--issue {
    background: #FEE2E2;
    color: #991B1B;
    border-left: 3px solid var(--color-error);
}

.tag-warning--warning {
    background: #FEF3C7;
    color: #92400E;
    border-left: 3px solid var(--color-warning);
}

.tag-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.tag-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    font-family: 'Courier New', monospace;
}

.tag-status {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tag-status--found {
    background: #D1FAE5;
    color: #065F46;
}

.tag-status--missing {
    background: #FEE2E2;
    color: #991B1B;
}

.tag-value {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.5;
    word-break: break-word;
    margin: 0;
}

.tag-value--empty {
    font-style: italic;
    color: #9CA3AF;
}

.tag-length {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
}

.tag-length--warning {
    color: var(--color-warning);
    font-weight: 600;
}

.tag-length--error {
    color: var(--color-error);
    font-weight: 600;
}

/* Issues Summary Table */
.issues-summary-card {
    background: #FFFBEB;
    border: 2px solid var(--color-warning);
}

.issues-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.export-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn--small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn--small svg {
    width: 16px;
    height: 16px;
}

.issues-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.issues-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 0.875rem;
}

.issues-table th {
    background: var(--color-bg-alt);
    color: var(--color-text);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--color-border);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.issues-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.issues-table tbody tr:last-child td {
    border-bottom: none;
}

.issues-table tbody tr:hover {
    background: var(--color-bg-alt);
}

.issue-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.issue-status--ok {
    background: #D1FAE5;
    color: #065F46;
}

.issue-status--issue {
    background: #FEE2E2;
    color: #991B1B;
}

.issue-status--warning {
    background: #FEF3C7;
    color: #92400E;
}

.issue-status--info {
    background: #DBEAFE;
    color: #1E40AF;
}

.issue-status-icon {
    width: 12px;
    height: 12px;
}

/* Recommendations */
.recommendations-card {
    background: #EFF6FF;
    border: 2px solid var(--color-info);
}

.recommendations-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.recommendation-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: var(--radius);
    border-left: 4px solid var(--color-info);
}

.recommendation-icon {
    flex-shrink: 0;
    color: var(--color-info);
}

.recommendation-text {
    flex: 1;
    font-size: 0.875rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.6;
}

/* Actions */
.actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

/* Info Section */
.info-section {
    margin: 4rem 0 3rem;
}

.info-section__title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin: 0 0 2rem;
    color: var(--color-text);
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.info-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
}

.info-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 0.75rem;
}

.info-card__text {
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--color-text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .checker-card {
        padding: 1.5rem;
    }

    .input-wrapper {
        flex-direction: column;
    }

    .summary-header {
        gap: 1rem;
    }

    .summary-stats {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .result-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0 1.5rem;
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .checker-card {
        padding: 1rem;
    }

    .result-card {
        padding: 1rem;
    }

    .actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .summary-stats {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .checker-section,
    .info-section,
    .actions {
        display: none;
    }

    .results-section {
        margin: 0;
    }
}