.text-gradient-purple {
    background: var(--grad-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.tool-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(var(--nav-height) + 2rem) 2rem 4rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    transition: var(--transition-smooth);
}

.back-link:hover {
    color: var(--accent-purple);
    transform: translateX(-4px);
}

.back-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    transform: rotate(180deg);
}

.tool-grid-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    margin-top: 1.5rem;
}

@media (max-width: 992px) {
    .tool-grid-layout {
        grid-template-columns: 1fr;
    }
}

.tool-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.tool-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--grad-purple);
    opacity: 0.7;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1rem;
}

.panel-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-title svg {
    width: 20px;
    height: 20px;
    color: var(--accent-purple);
}

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

.action-btn-sm {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.action-btn-sm:hover {
    background: rgba(168, 85, 247, 0.1);
    border-color: var(--accent-purple);
    color: white;
}

.editor-container {
    position: relative;
}

.editor-textarea {
    width: 100%;
    height: 400px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    padding: 1.25rem;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    resize: none;
    outline: none;
    transition: var(--transition-smooth);
}

.editor-textarea:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 15px rgba(168, 85, 247, 0.15);
    background: rgba(0, 0, 0, 0.35);
}

.panel-footer-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.btn-action-main {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

.btn-action-main:hover {
    background: rgba(168, 85, 247, 0.1);
    border-color: var(--accent-purple);
    transform: translateY(-2px);
}

.btn-action-main.success {
    background: rgba(16, 185, 129, 0.15) !important;
    border-color: #10b981 !important;
    color: #34d399 !important;
}

/* Stats Cards Dashboard */
.stats-dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
    text-align: center;
    transition: var(--transition-smooth);
}

.stat-card:hover {
    background: rgba(168, 85, 247, 0.03);
    border-color: rgba(168, 85, 247, 0.25);
    transform: translateY(-2px);
}

.stat-value {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-purple);
    margin-bottom: 0.25rem;
    text-shadow: var(--glow-purple);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Detailed Dashboard sections */
.sub-section {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
}

.sub-section-title {
    font-family: 'Be Vietnam Pro', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.density-toggle-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-weight: 500;
    user-select: none;
}

.density-toggle-label input {
    cursor: pointer;
    accent-color: var(--accent-purple);
}

/* Speed Estimators */
.estimators-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.estimator-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.estimator-lbl {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.estimator-val {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Density lists */
.density-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.density-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.density-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 500;
}

.density-word {
    color: var(--text-primary);
}

.density-qty {
    color: var(--text-secondary);
}

.density-progress-bg {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.density-progress-bar {
    height: 100%;
    background: var(--grad-purple);
    border-radius: 3px;
    width: 0%;
    transition: width 0.5s ease-out;
}

/* Readability score styling */
.readability-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.readability-gauge {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: conic-gradient(var(--accent-purple) 0%, rgba(255, 255, 255, 0.05) 0%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--glow-purple);
}

.readability-gauge::before {
    content: '';
    position: absolute;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #111928;
}

.readability-gauge-val {
    position: relative;
    font-size: 1.1rem;
    font-weight: 800;
    color: white;
    z-index: 2;
}

.readability-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
    min-width: 0;
}

.readability-title-lbl {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.readability-status-badge {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-purple);
    line-height: 1.4;
    opacity: 0.9;
}

/* Mobile Tab Styles */
.mobile-tabs-container {
    display: none;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.25rem;
    margin-bottom: 1.5rem;
}

.mobile-tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-tab-btn.active {
    background: rgba(168, 85, 247, 0.1);
    color: white;
    box-shadow: inset 0 0 10px rgba(168, 85, 247, 0.1);
}

@media (max-width: 992px) {
    .mobile-tabs-container {
        display: flex;
    }
    .tool-panel {
        display: none;
    }
    .active-panel {
        display: flex !important;
    }
}

@media (max-width: 768px) {
    .tool-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .stats-dashboard {
        grid-template-columns: 1fr;
    }
    .tool-panel {
        padding: 1.25rem;
    }
    .stat-value {
        font-size: 1.6rem;
    }
    .readability-gauge {
        width: 70px;
        height: 70px;
        min-width: 70px;
    }
    .readability-gauge-val {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .stats-dashboard {
        grid-template-columns: 1fr;
    }
    .stat-card {
        padding: 1rem 0.75rem;
    }
    .stat-value {
        font-size: 1.4rem;
    }
}