:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-card: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

a, .btn-link {
    color: #006bb7;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* LinkTracer Styles */
.tracer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.25rem;
    margin: 0.5rem 0 0 0;
    opacity: 0.95;
}

.config-panel {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

.url-section {
    margin-bottom: 1.5rem;
}

.url-section label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.url-input {
    flex: 1;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.url-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.url-input:disabled {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
}

.trace-button {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: var(--primary-color);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.trace-button:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.trace-button:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.custom-ua-row {
    margin-top: 1rem;
}

.option-item.full-width {
    grid-column: 1 / -1;
}

.option-item label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.option-item input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.option-item input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.option-item input:disabled {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
}

.option-item select,
.user-agent-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    transition: all 0.2s;
    background-color: white;
    cursor: pointer;
}

.option-item select:focus,
.user-agent-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.option-item select:disabled,
.user-agent-select:disabled {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
}

.results-panel {
    background: var(--bg-card);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.results-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.duration {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 0.375rem;
}

.error-message {
    padding: 1rem;
    margin-bottom: 1rem;
    background: #fee;
    border: 1px solid var(--error-color);
    border-radius: 0.5rem;
    color: #b91c1c;
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-card {
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.2s;
}

.step-card.redirect {
    border-left: 4px solid var(--warning-color);
}

.step-card.final {
    border-left: 4px solid var(--success-color);
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    cursor: pointer;
    transition: background 0.2s;
}

.step-header:hover {
    background: #f3f4f6;
}

.step-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.step-number {
    font-weight: 700;
    color: var(--text-primary);
}

.status-badge {
    padding: 0.25rem 0.625rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-2xx {
    background: #d1fae5;
    color: #065f46;
}

.status-3xx {
    background: #fef3c7;
    color: #92400e;
}

.status-4xx {
    background: #fee2e2;
    color: #991b1b;
}

.status-5xx {
    background: #dbeafe;
    color: #1e3a8a;
}

.status-0xx {
    background: #f3f4f6;
    color: #374151;
}

.response-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    background: white;
    border-radius: 0.25rem;
}

.server-ip {
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    background: #f0f9ff;
    border-radius: 0.25rem;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
}

.expand-button {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    transition: transform 0.2s;
}

.step-url-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.75rem 1.25rem;
}

.step-url {
    flex: 1;
    font-size: 0.875rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.copy-button {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

.copy-button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.copy-button:active {
    transform: scale(0.95);
}

.redirect-info {
    padding: 0.75rem 1.25rem;
    background: #fffbeb;
    border-top: 1px solid #fef3c7;
    font-size: 0.875rem;
}

.redirect-info code {
    background: white;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.8125rem;
    border: 1px solid #fde68a;
}

.step-details {
    border-top: 1px solid var(--border-color);
}

.detail-section {
    padding: 1.25rem;
}

.detail-section h4 {
    margin: 0 0 1rem 0;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.headers-table {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.header-row {
    display: flex;
    gap: 0.75rem;
    font-size: 0.8125rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 0.375rem;
}

.header-name {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 150px;
}

.header-value {
    color: var(--text-secondary);
    word-break: break-all;
}

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

.response-body-header h4 {
    margin: 0;
}

.show-body-button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.show-body-button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.show-body-button:active {
    transform: translateY(0);
}

.response-body {
    background: #1f2937;
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
}

.response-body pre {
    margin: 0;
    color: #d1d5db;
    font-size: 0.8125rem;
    font-family: 'Courier New', Courier, monospace;
    white-space: pre-wrap;
    word-break: break-word;
}

.copy-toast {
    position: fixed;
    background: var(--success-color);
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    font-size: 0.875rem;
    z-index: 9999;
    pointer-events: none;
    animation: toastFadeIn 0.2s ease-out, toastFadeOut 0.3s ease-in 1.7s;
}

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

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

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .config-panel,
    .results-panel {
        padding: 1.25rem;
    }

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

    .trace-button {
        width: 100%;
        justify-content: center;
    }

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

    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .step-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .header-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .header-name {
        min-width: auto;
    }
}