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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.floating-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); opacity: 0.3; }
    50% { transform: translateY(-20px) rotate(180deg); opacity: 1; }
}

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

.header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 1s ease-out;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(45deg, #fff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

.header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 300;
}

.main-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2.5rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease-out 0.3s both;
    transition: all 0.3s ease;
}

.main-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.3);
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.tab {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.tab.active {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    background: rgba(255, 255, 255, 0.15);
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.textarea-large {
    min-height: 120px;
    resize: vertical;
}

.style-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.style-option {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: rgba(255, 255, 255, 0.8);
}

.style-option:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: white;
}

.style-option.selected {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border-color: #667eea;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.generate-btn {
    width: 100%;
    padding: 1.2rem 2rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

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

.generate-btn.loading {
    pointer-events: none;
}

.generate-btn .btn-text {
    transition: opacity 0.3s ease;
}

.generate-btn.loading .btn-text {
    opacity: 0;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.generate-btn.loading .loading-spinner {
    opacity: 1;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.result-section {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.result-section.show {
    opacity: 1;
    transform: translateY(0);
}

.result-header {
    display: flex;
    justify-content: between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-title {
    color: white;
    font-size: 1.3rem;
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.poem-output {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 2rem;
    color: white;
    font-family: 'Georgia', serif;
    line-height: 1.8;
    font-size: 1.1rem;
    border-left: 4px solid #667eea;
    white-space: pre-line;
}

@media (max-width: 768px) {
    .container { padding: 1rem; }
    .header h1 { font-size: 2.5rem; }
    .form-grid { grid-template-columns: 1fr; gap: 1rem; }
    .style-selector { grid-template-columns: repeat(2, 1fr); }
    .advanced-options { grid-template-columns: 1fr; }
    .tabs { flex-direction: column; }
}