/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --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), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

body {
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gradient-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.app-header {
    padding: 2rem 0;
    position: relative;
    overflow: hidden;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.logo-icon i {
    font-size: 1.8rem;
    color: white;
}

.logo-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.logo-text p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 400;
}

/* Language Toggle */
.language-toggle {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    gap: 0.5rem;
    z-index: 3;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.lang-btn i {
    font-size: 0.9rem;
}

.header-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 50px;
    right: 50px;
    animation-delay: 3s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Control Panel */
.control-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.control-section {
    margin-bottom: 2rem;
}

.control-section:last-child {
    margin-bottom: 0;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-title i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.control-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.control-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.control-btn:hover::before {
    left: 100%;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.control-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-lg);
}

.control-btn i {
    font-size: 1rem;
}

/* Generate Button */
.generate-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2rem;
    background: var(--gradient-secondary);
    border: none;
    border-radius: 20px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.generate-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.generate-button:hover::before {
    left: 100%;
}

.generate-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.generate-button:active {
    transform: translateY(-1px);
}

.generate-button i {
    font-size: 1.2rem;
}

/* Result Section */
.result-section {
    display: none;
}

.result-section.show {
    display: block;
    animation: slideInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bg-tertiary);
}

.result-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.result-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--gradient-accent);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.name-display {
    text-align: center;
    margin-bottom: 2rem;
}

.generated-name {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.name-pronunciation {
    text-align: center;
    margin: 1rem 0;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.pronunciation-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 2px;
    font-family: 'Inter', sans-serif;
}

.name-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.detail-item i {
    color: var(--accent-color);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.detail-content label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-content p {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.5;
}

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

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.like-btn {
    background: var(--gradient-secondary);
    color: white;
}

.like-btn.liked {
    background: var(--success-color);
}

.like-btn.liked i {
    animation: heartBeat 0.6s ease-in-out;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.share-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

/* Favorites Section */
.favorites-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.favorites-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--bg-tertiary);
}

.favorites-header h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.favorites-header h3 i {
    color: var(--danger-color);
}

.favorites-count {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.875rem;
}

.favorites-grid {
    display: grid;
    gap: 1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-light);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.empty-state span {
    font-size: 0.9rem;
}

.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.favorite-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.favorite-info h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.favorite-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.remove-favorite {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.remove-favorite:hover {
    background: #dc2626;
    transform: scale(1.05);
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    transform: translateX(400px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    max-width: 300px;
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    background: var(--success-color);
}

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

.toast-message {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content,
    .main-content {
        padding: 0 1rem;
    }

    .logo-text h1 {
        font-size: 2rem;
    }

    .language-toggle {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 1rem;
        justify-content: center;
    }

    .panel-card,
    .result-card,
    .favorites-section {
        padding: 1.5rem;
    }

    .control-buttons {
        flex-direction: column;
    }

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

    .name-details {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

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

    .toast {
        right: 1rem;
        left: 1rem;
        transform: translateY(-100px);
    }

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

@media (max-width: 480px) {
    .logo-section {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-icon {
        width: 50px;
        height: 50px;
    }
    
    .logo-text h1 {
        font-size: 1.75rem;
    }
    
    .generated-name {
        font-size: 2rem;
    }
    
    .panel-card,
    .result-card,
    .favorites-section {
        padding: 1rem;
    }
}