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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.3) 0%, transparent 50%),
        linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%;
    background-attachment: fixed;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

/* 3D AI Logo - Robot */
.ai-logo-3d {
    width: 80px;
    height: 100px;
    position: relative;
    margin: 0 15px;
    perspective: 1000px;
}

.ai-robot {
    width: 80px;
    height: 100px;
    position: relative;
    transform-style: preserve-3d;
    animation: robotFloat 4s ease-in-out infinite;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Robot Head */
.robot-head {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    border-radius: 25px 25px 15px 15px;
    position: relative;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.robot-eye {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 15px;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
    animation: eyeBlink 3s ease-in-out infinite;
}

.robot-eye.left {
    left: 12px;
}

.robot-eye.right {
    right: 12px;
}

.robot-mouth {
    width: 16px;
    height: 6px;
    background: #fff;
    border-radius: 0 0 8px 8px;
    position: absolute;
    bottom: 12px;
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.6);
    animation: mouthGlow 2s ease-in-out infinite alternate;
}

/* Robot Body */
.robot-body {
    width: 60px;
    height: 35px;
    background: linear-gradient(45deg, #4facfe, #00d2ff, #667eea, #764ba2);
    background-size: 200% 200%;
    animation: gradientShift 4s ease infinite;
    border-radius: 15px;
    margin-top: -5px;
    position: relative;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
    display: flex;
    justify-content: center;
}

.robot-chest {
    width: 40px;
    height: 25px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin-top: 5px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.robot-arm {
    width: 8px;
    height: 25px;
    background: linear-gradient(45deg, #f093fb, #f5576c);
    border-radius: 4px;
    position: absolute;
    top: 5px;
    animation: armSwing 2s ease-in-out infinite;
}

.robot-arm.left {
    left: -5px;
    transform-origin: top;
    animation-delay: 0s;
}

.robot-arm.right {
    right: -5px;
    transform-origin: top;
    animation-delay: 1s;
}

/* Robot Legs */
.robot-legs {
    width: 60px;
    height: 25px;
    display: flex;
    justify-content: space-between;
    margin-top: -5px;
}

.robot-leg {
    width: 12px;
    height: 25px;
    background: linear-gradient(45deg, #4facfe, #667eea);
    border-radius: 6px;
    animation: legWalk 1.5s ease-in-out infinite;
}

.robot-leg.left {
    animation-delay: 0s;
}

.robot-leg.right {
    animation-delay: 0.75s;
}

.ai-text {
    font-size: 2.5rem;
    font-weight: 900;
    font-family: 'Inter', sans-serif;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    letter-spacing: -2px;
    animation: textGlow 2s ease-in-out infinite alternate;
    user-select: none;
}

@keyframes robotFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-5px) rotate(2deg); }
    50% { transform: translateY(-8px) rotate(0deg); }
    75% { transform: translateY(-5px) rotate(-2deg); }
}

@keyframes eyeBlink {
    0%, 90%, 100% { transform: scaleY(1); }
    95% { transform: scaleY(0.1); }
}

@keyframes mouthGlow {
    0% { box-shadow: 0 0 6px rgba(255, 255, 255, 0.6); }
    100% { box-shadow: 0 0 12px rgba(255, 255, 255, 0.8), 0 0 20px rgba(255, 255, 255, 0.4); }
}

@keyframes armSwing {
    0%, 100% { transform: rotateZ(0deg); }
    50% { transform: rotateZ(15deg); }
}

@keyframes legWalk {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-3px); }
}

/* Interactive hover effects */
.ai-logo-3d:hover .ai-robot {
    animation-play-state: paused;
    transform: scale(1.1) rotate(5deg);
    transition: transform 0.3s ease;
}

.ai-logo-3d:hover .robot-eye {
    animation: eyeBlink 0.5s ease-in-out infinite;
}

.ai-logo-3d:hover .robot-mouth {
    animation: mouthGlow 0.3s ease-in-out infinite alternate;
}

.ai-logo-3d:hover .robot-arm {
    animation: armSwing 0.5s ease-in-out infinite;
}

.ai-logo-3d:hover .robot-leg {
    animation: legWalk 0.3s ease-in-out infinite;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.tagline {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.9);
    font-weight: 300;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Input Section */
.input-section {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    position: relative;
    overflow: hidden;
}

.input-section::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 ease;
}

.input-section:hover::before {
    left: 100%;
}

.input-container {
    text-align: center;
}

.input-label {
    display: block;
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.input-label i {
    color: #f093fb;
    font-size: 1.5rem;
    animation: pulse 2s ease-in-out infinite;
}

.input-wrapper {
    display: flex;
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
}

.topic-input {
    flex: 1;
    min-width: 300px;
    padding: 18px 25px;
    border: 2px solid #e1e5e9;
    border-radius: 15px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.topic-input:focus {
    outline: none;
    border-color: #f093fb;
    box-shadow: 0 0 0 3px rgba(240, 147, 251, 0.2);
    transform: translateY(-2px);
    background: linear-gradient(135deg, #fff, #f8f9ff);
}

.generate-btn {
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #f5576c, #4facfe);
    background-size: 300% 300%;
    animation: gradientShift 3s ease infinite;
    color: white;
    border: none;
    padding: 18px 30px;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.generate-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
    animation-play-state: paused;
}

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

/* Categories Section */
.categories-section {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.categories-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(240, 147, 251, 0.05) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.categories-section:hover::after {
    transform: translateX(100%);
}

.categories-section h3 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
    font-size: 1.4rem;
    font-weight: 600;
}

.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.category-tag {
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #f093fb, #f5576c);
    background-size: 200% 200%;
    animation: gradientShift 4s ease infinite;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.category-tag:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.5);
    animation-play-state: paused;
}

/* Results Section */
.results-section {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    position: relative;
    overflow: hidden;
}

.results-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(102, 126, 234, 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.results-section:hover::before {
    opacity: 1;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.result-header h3 {
    color: #333;
    font-size: 1.4rem;
    font-weight: 600;
}

.copy-btn {
    background: linear-gradient(45deg, #4ecdc4, #44a08d, #4facfe, #00d2ff);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(78, 205, 196, 0.4);
}

.prompt-display {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border: 2px solid transparent;
    background-clip: padding-box;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.7;
    color: #333;
    min-height: 100px;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.prompt-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 15px;
    padding: 2px;
    background: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.prompt-display .quote-start {
    font-size: 3rem;
    background: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: absolute;
    top: 10px;
    left: 15px;
    font-family: serif;
}

.prompt-display .quote-end {
    font-size: 3rem;
    background: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: absolute;
    bottom: 10px;
    right: 15px;
    font-family: serif;
}

.prompt-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.regenerate-btn, .save-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.regenerate-btn {
    background: linear-gradient(45deg, #ffa726, #ff9800, #ff6b6b, #f093fb);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    color: white;
}

.regenerate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 167, 38, 0.4);
}

.save-btn {
    background: linear-gradient(45deg, #66bb6a, #4caf50, #4ecdc4, #00d2ff);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    color: white;
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 187, 106, 0.4);
}

/* Saved Section */
.saved-section {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.saved-section h3 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
    font-size: 1.4rem;
    font-weight: 600;
}

.saved-prompts {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.saved-prompt {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    padding: 20px;
    position: relative;
}

.saved-prompt-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.saved-prompt-topic {
    font-weight: 600;
    background: linear-gradient(45deg, #667eea, #f093fb, #f5576c);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.delete-saved {
    background: #dc3545;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8rem;
}

.saved-prompt-text {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px 0;
    color: rgba(255,255,255,0.8);
}

/* Loading Modal */
.loading-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid transparent;
    border-image: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe) 1;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    position: relative;
}

.spinner::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 4px solid transparent;
    border-top: 4px solid;
    border-image: linear-gradient(45deg, #667eea, #f093fb, #f5576c, #4facfe) 1;
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

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

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* Floating Background Elements */
.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    animation: float 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.floating-shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
    animation-duration: 10s;
}

.floating-shape:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
    animation-duration: 7s;
}

.floating-shape:nth-child(4) {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: 1s;
    animation-duration: 9s;
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(45deg, #4caf50, #66bb6a, #4ecdc4);
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite, slideIn 0.3s ease;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    display: none;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
    z-index: 1001;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        margin-bottom: 30px;
        padding: 30px 0;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .input-section {
        padding: 30px 20px;
    }
    
    .input-wrapper {
        flex-direction: column;
        align-items: stretch;
    }
    
    .topic-input {
        min-width: auto;
    }
    
    .generate-btn {
        width: 100%;
        justify-content: center;
    }
    
    .categories-section,
    .results-section,
    .saved-section {
        padding: 25px 20px;
    }
    
    .result-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .copy-btn {
        width: 100%;
        justify-content: center;
    }
    
    .prompt-actions {
        flex-direction: column;
    }
    
    .regenerate-btn,
    .save-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo h1 {
        font-size: 1.8rem;
    }
    
    .input-label {
        font-size: 1.1rem;
    }
    
    .category-tags {
        gap: 10px;
    }
    
    .category-tag {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
}