:root {
    --primary: #9333EA;
    --primary-light: #A855F7;
    --primary-dark: #7E22CE;
    --secondary: #EC4899;
    --accent: #A855F7;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --background: #0A0A0F;
    --card-bg: #111827;
    --card-hover: #1E1E2D;
    --text-color: #f1f5f9;
    --text-light: #94a3b8;
    --border-color: #1E1E2D;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 1rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
    transition: var(--transition);
}

body {
    background-color: var(--background);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar styles */
.navbar {
    background: rgba(3, 7, 18, 0.95);
    padding: var(--spacing-md);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    padding: var(--spacing-sm) 0;
}

.logo i {
    font-size: 1.75rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.logo h2 {
    color: var(--text-color);
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
}

.logo h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
    opacity: 0;
}

.logo:hover h2::after {
    width: 100%;
    opacity: 1;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
    opacity: 0;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
    opacity: 1;
}

.nav-links a:hover {
    color: var(--text-color);
}

.nav-links a i {
    margin-right: 0.5rem;
    font-size: 0.9em;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 7rem auto 4rem;
    padding: 0 var(--spacing-lg);
}

.main-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.writer-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.editor-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.editor-section:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.editor-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
}

.editor-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
}

.editor-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.editor-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--card-hover);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.editor-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--text-color);
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.editor-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.editor-btn i {
    font-size: 0.875rem;
}

.text-stats {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-hover);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.875rem;
}

.text-input {
    width: 100%;
    height: 500px;
    padding: var(--spacing-md);
    background: var(--card-bg);
    color: var(--text-color);
    border: none;
    resize: none;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    transition: var(--transition);
}

.text-input:focus {
    outline: none;
    background: var(--card-hover);
}

.style-select {
    padding: var(--spacing-sm);
    background: var(--card-hover);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

.style-select:focus {
    outline: none;
    border-color: var(--primary);
    color: var(--text-color);
}

.style-select option {
    background: var(--card-bg);
    color: var(--text-color);
}

.output-section {
    padding: var(--spacing-md);
    font-size: 0.875rem;
    line-height: 1.6;
    max-height: 500px;
    overflow-y: auto;
}

.output-section::-webkit-scrollbar {
    width: 8px;
}

.output-section::-webkit-scrollbar-track {
    background: var(--card-bg);
}

.output-section::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.output-section::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.suggestion-item {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    background: var(--card-hover);
    border-left: 3px solid var(--info);
    transition: var(--transition);
}

.suggestion-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.suggestion-item.warning {
    border-left-color: var(--warning);
}

.suggestion-item.error {
    border-left-color: var(--error);
}

.suggestion-item.success {
    border-left-color: var(--success);
}

.suggestion-item i {
    margin-right: var(--spacing-sm);
}

.suggestion-item .highlight {
    background: rgba(147, 51, 234, 0.1);
    border-bottom: 1px solid var(--primary);
    padding: 0 0.25rem;
}

.suggestion-item .replacement {
    color: var(--primary-light);
    font-weight: 500;
}

/* Features Section */
.features {
    margin-top: calc(var(--spacing-lg) * 2);
}

.features h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-card > * {
    position: relative;
    z-index: 1;
}

.feature-card i {
    font-size: 2rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.feature-card h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
}

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

/* Tooltip */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--card-hover);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 1000;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .writer-container {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

    .main-content {
        padding: 0 var(--spacing-md);
        margin-top: 5rem;
    }

    .main-content h1 {
        font-size: 2rem;
    }

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

    .text-stats {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .editor-actions {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .editor-btn {
        font-size: 0.75rem;
        padding: var(--spacing-sm);
    }

    .main-content h1 {
        font-size: 1.75rem;
    }

    .text-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}