:root {
    --primary-color: #2563eb;
    --primary-color-light: #e5ebfb;
    --primary-hover: #1d4ed8;
    --secondary-color: #334155;
    --secondary-bg: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-bg: #f8fafc;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --primary-shadow: rgb(29 78 216 / 25%);
    --shadow-sm: 0 1px 2px rgb(15 23 42 / 0.08);
    --shadow-md: 0 4px 12px rgb(15 23 42 / 0.08);
    --shadow-lg: 0 12px 24px rgb(15 23 42 / 0.12);
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.5rem;
    --max-width-reading: 720px;
}

.converter-page {
    padding: 2rem 0 4rem;
}

.converter-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.eyebrow-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--primary-color);
    background: rgb(37 99 235 / 0.08);
    padding: 0.35rem 0.9rem;
    border-radius: 9999px;
    margin-bottom: 1rem;
}

.converter-title {
    font-size: clamp(2.25rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.1;
}

.converter-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin: 0 auto 1rem;
    max-width: 720px;
}

.converter-meta {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    padding: 0;
    margin: 0;
}

.meta-chip {
    background: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    padding: 0.45rem 0.95rem;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.converter-main {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    border: 1px solid rgba(148, 163, 184, 0.25);
}

.converter-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.input-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1rem;
}

.label-title {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.label-helper {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-textarea {
    width: 100%;
    min-height: 120px;
    padding: 1rem 1.15rem;
    border: 2px solid var(--border-color);
    border-radius: 0.9rem;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
    background: var(--surface-color);
    box-shadow: inset 0 1px 2px rgb(15 23 42 / 0.04);
    resize: vertical;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgb(37 99 235 / 0.15);
}

.form-textarea:hover {
    border-color: var(--primary-color);
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.convert-btn {
    flex: 1 1 200px;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: #ffffff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.9rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    position: relative;
    overflow: hidden;
}

.convert-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgb(37 99 235 / 0.25);
}

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

.convert-btn.loading,
.convert-btn:disabled {
    cursor: wait;
    opacity: 0.9;
}

.ghost-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 0.9rem;
    padding: 0.9rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.status-bar {
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    line-height: 1.4;
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.status-bar svg {
    flex-shrink: 0;
}

.status-info {
    background: var(--primary-color-light);
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

.status-warning {
    background: #fff7ed;
    color: #9a3412;
    border-left: 4px solid #ea580c;
}

.results-container {
    border-radius: var(--radius-md);
    padding: 2rem;
    border: 1px solid var(--border-color);
    position: relative;
    background: var(--light-bg);
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.results-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.results-beta {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgb(37 99 235 / 0.1);
    padding: 0.35rem 0.7rem;
    border-radius: 9999px;
}

.output-display {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 0.9rem;
    padding: 1rem;
    font-size: 0.95rem;
    line-height: 1.5;
    word-break: break-all;
    min-height: 80px;
    color: var(--text-primary);
}

.output-display.has-content {
    border-color: var(--success-color);
    background: #f0fdf4;
}

.output-display pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-all;
}

.output-display .output-error {
    color: var(--danger-color);
    font-weight: 600;
}

.conversion-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.stat-card {
    background: var(--surface-color);
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.action-btn {
    padding: 0.85rem 1.6rem;
    border-radius: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.copy-btn {
    background: #fff;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px var(--primary-shadow);
}

.clear-btn {
    background: #fff;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.clear-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px var(--primary-shadow);
}

.download-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    border: none;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgb(16 185 129 / 0.25);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.convert-btn:focus,
.ghost-btn:focus,
.action-btn:focus,
.form-textarea:focus {
    outline-offset: 3px;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid rgba(255, 255, 255, 0.6);
    border-top: 3px solid #ffffff;
    border-radius: 9999px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.success-animation {
    animation: successPulse 0.6s ease-in-out;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    color: #ffffff;
    font-weight: 600;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
}

.notification.notification-out {
    animation: slideOut 0.3s ease-in forwards;
}

.notification-success {
    background: #10b981;
}

.notification-warning {
    background: #f59e0b;
}

.notification-error {
    background: #ef4444;
}

.notification-info {
    background: #2563eb;
}

.feature-item,
.faq-item,
.use-case {
    padding: 1.25rem;
    background: #ffffff;
    border-radius: 1rem;
    border: 1px solid #e2e8f0;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.faq-item {
    box-shadow: none;
}

.feature-item h4,
.faq-item h4,
.use-case h4 {
    color: var(--primary-color);
    font-weight: 700;
}

.faq-container,
.use-cases {
    background: #f8fafc;
    border-radius: 1rem;
    padding: 1.75rem;
    border: 1px solid #e2e8f0;
}

.seo-section {
    background: #ebf3ff;
    padding: 2rem 0;
}

.step-list {
    counter-reset: steps;
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
    display: grid;
    gap: 1rem;
}

.step-list li {
    counter-increment: steps;
    position: relative;
    padding-left: 2.5rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.step-list li::before {
    content: counter(steps);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    background: var(--primary-color);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

@media (max-width: 991px) {
    .converter-main {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .converter-page {
        padding: 2.5rem 0 3rem;
    }

    .converter-meta {
        gap: 0.5rem;
    }

    .converter-main {
        border-radius: 1.25rem;
    }

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

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .ghost-btn {
        width: 100%;
        justify-content: center;
    }

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

@media (max-width: 576px) {
    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}