* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0052CC;
    --primary-hover: #0747A6;
    --secondary-color: #6554C0;
    --success-color: #00875A;
    --danger-color: #DE350B;
    --warning-color: #FF991F;
    --text-primary: #172B4D;
    --text-secondary: #6B778C;
    --border-color: #DFE1E6;
    --background-light: #F4F5F7;
    --background-white: #FFFFFF;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    background: var(--background-white);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo-icon {
    color: var(--primary-color);
}

.lang-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--background-white);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* Main */
.main {
    padding: 2rem 0 4rem;
    min-height: calc(100vh - 120px);
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--background-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.hero h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Editor Container */
.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .editor-container {
        grid-template-columns: 1fr;
    }
}

.input-section,
.output-section {
    background: var(--background-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

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

.section-header h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
}

.sample-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--background-light);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.sample-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.input-textarea {
    width: 100%;
    min-height: 350px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9375rem;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.input-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.input-options {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1rem 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.format-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

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

/* Output Section */
.output-actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    padding: 0.5rem;
    background: var(--background-light);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.output-container {
    min-height: 350px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--background-light);
    overflow-y: auto;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    color: var(--text-secondary);
}

.empty-state svg {
    margin-bottom: 1rem;
}

/* Formatted Output */
.formatted-output {
    background: var(--background-white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.meeting-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.meeting-date {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.section {
    margin-bottom: 1.5rem;
}

.section h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section ul {
    list-style: none;
    padding-left: 1.5rem;
}

.section li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.section li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--text-secondary);
}

.decisions {
    background: linear-gradient(135deg, rgba(0, 135, 90, 0.05), rgba(0, 135, 90, 0.1));
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--success-color);
}

.tasks {
    background: linear-gradient(135deg, rgba(255, 153, 31, 0.05), rgba(255, 153, 31, 0.1));
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--warning-color);
}

.no-items {
    color: var(--text-secondary);
    font-style: italic;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-card {
    background: var(--background-white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s;
}

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

.feature-icon {
    display: inline-flex;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(0, 82, 204, 0.1), rgba(101, 84, 192, 0.1));
    border-radius: 50%;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-card h4 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Footer */
.footer {
    background: var(--background-white);
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.06);
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    background: var(--success-color);
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    background: var(--danger-color);
}

/* Responsive */
@media (max-width: 640px) {
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .lang-selector {
        flex-wrap: wrap;
    }
}