:root {
    --banana-yellow: #FFD700;
    --banana-light: #FFC107;
    --cream: #FFF8E1;
    --cream-light: #FFFDE7;
    --coral: #FF8A65;
    --mint: #81C784;
    --brown: #5D4037;
    --charcoal: #37474F;
    --shadow: rgba(93, 64, 55, 0.15);
}

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

body {
    font-family: 'Nunito', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, var(--cream) 0%, var(--cream-light) 50%, #FFF3E0 100%);
    min-height: 100vh;
    color: var(--charcoal);
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #FFF8DC 0%, #FFE4B5 100%);
    padding: 2rem 1rem;
    text-align: center;
    box-shadow: 0 4px 20px var(--shadow);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.header-content {
    position: relative;
    z-index: 1;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.logo-banana {
    font-size: 3rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(-5deg); }
    75% { transform: translateY(-5px) rotate(5deg); }
}

.title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--brown);
    text-shadow: 2px 2px 0 rgba(255, 215, 0, 0.5);
}

.title-sub {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--coral);
    display: block;
    width: 100%;
}

.subtitle {
    margin-top: 0.75rem;
    font-size: 1.1rem;
    color: var(--brown);
    opacity: 0.8;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 1rem;
    max-width: 750px;
    margin: 0 auto;
    width: 100%;
}

/* Cards */
.card {
    background: white;
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: 0 8px 32px var(--shadow);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px var(--shadow);
}

/* Input */
.brand-input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    font-size: 1.2rem;
    font-family: 'Nunito', sans-serif;
    font-weight: 600;
    border: 3px solid #E0E0E0;
    border-radius: 16px;
    outline: none;
    transition: all 0.3s ease;
    background: var(--cream-light);
}

.brand-input:focus {
    border-color: var(--banana-yellow);
    box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.2);
    background: white;
}

.brand-input::placeholder {
    color: #9E9E9E;
    font-weight: 500;
}

/* Collapsible Sections */
.collapsible-section {
    margin-top: 1rem;
    border-top: 2px dashed #E0E0E0;
    padding-top: 1rem;
}

.collapsible-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, var(--cream-light), var(--cream));
    border: none;
    border-radius: 12px;
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--brown);
    cursor: pointer;
    transition: all 0.3s ease;
}

.collapsible-toggle:hover {
    background: linear-gradient(135deg, var(--cream), #FFE4B5);
}

.toggle-arrow {
    transition: transform 0.3s ease;
    font-size: 0.8rem;
}

.toggle-arrow.open {
    transform: rotate(180deg);
}

.collapsible-content {
    padding: 1rem 0;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Detail Grid */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-item.full-width {
    grid-column: span 2;
}

.detail-item label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--brown);
}

.detail-item input[type="text"] {
    padding: 0.75rem 1rem;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    font-family: 'Nunito', sans-serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.detail-item input[type="text"]:focus {
    border-color: var(--banana-yellow);
    outline: none;
}

.color-input-wrapper {
    display: flex;
    gap: 0.5rem;
}

.color-input-wrapper input[type="color"] {
    width: 50px;
    height: 44px;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    cursor: pointer;
    padding: 4px;
}

.color-text {
    flex: 1;
}

/* Extras Section */
.extras-section {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.extras-group label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--brown);
    display: block;
    margin-bottom: 0.5rem;
}

.time-buttons, .ratio-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.time-btn, .ratio-btn {
    padding: 0.6rem 1rem;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    background: white;
    font-family: 'Nunito', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.time-btn:hover, .ratio-btn:hover {
    border-color: var(--banana-light);
    background: var(--cream-light);
}

.time-btn.active, .ratio-btn.active {
    border-color: var(--banana-yellow);
    background: var(--banana-yellow);
    color: var(--brown);
}

.extras-checkboxes {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.extra-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.75rem;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    font-weight: 600;
}

.extra-checkbox input {
    display: none;
}

.extra-checkbox:hover {
    border-color: var(--mint);
    background: rgba(129, 199, 132, 0.1);
}

.extra-checkbox.checked {
    border-color: var(--mint);
    background: rgba(129, 199, 132, 0.2);
}

/* Generate Button */
.generate-btn {
    width: 100%;
    padding: 1.25rem 2rem;
    margin-top: 1.5rem;
    background: linear-gradient(135deg, var(--banana-yellow) 0%, var(--banana-light) 100%);
    border: none;
    border-radius: 16px;
    font-family: 'Nunito', sans-serif;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--brown);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
}

.generate-btn:hover:not(.disabled) {
    transform: scale(1.02);
    box-shadow: 0 6px 25px rgba(255, 215, 0, 0.5);
}

.generate-btn:active:not(.disabled) {
    transform: scale(0.98);
}

.generate-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.generate-btn.generating {
    animation: wiggle 0.5s ease infinite;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-2deg); }
    75% { transform: rotate(2deg); }
}

/* Encouraging Message */
.encouraging-message {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--coral);
    padding: 1rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Image Card */
.image-card {
    background: linear-gradient(135deg, #FFFDE7 0%, white 100%);
    border: 3px solid var(--banana-yellow);
}

.image-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.image-header h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--brown);
}

.image-container {
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.generated-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
    transition: opacity 0.3s ease;
}

.generated-image.loading {
    opacity: 0;
    position: absolute;
}

.image-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 3rem;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #E0E0E0;
    border-top-color: var(--banana-yellow);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.image-loading p {
    font-weight: 600;
    color: var(--brown);
    animation: pulse-text 1.5s ease-in-out infinite;
}

@keyframes pulse-text {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.image-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    color: var(--coral);
}

.retry-btn {
    padding: 0.75rem 1.5rem;
    background: var(--coral);
    color: white;
    border: none;
    border-radius: 10px;
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    transform: scale(1.05);
}

.image-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.download-btn {
    flex: 1;
    min-width: 180px;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--mint) 0%, #66BB6A 100%);
    border: none;
    border-radius: 12px;
    font-family: 'Nunito', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: scale(1.02);
}

/* Prompt Card */
.prompt-card {
    background: white;
    border: 2px solid #E0E0E0;
}

.prompt-details {
    cursor: pointer;
}

.prompt-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    font-weight: 700;
    color: var(--brown);
    list-style: none;
}

.prompt-summary::-webkit-details-marker {
    display: none;
}

.prompt-hint {
    font-size: 0.8rem;
    color: #9E9E9E;
    font-weight: 500;
}

.prompt-display {
    background: #37474F;
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1rem 0;
}

.prompt-display p {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #E0E0E0;
    word-break: break-word;
}

.language-toggle {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 2px solid #E0E0E0;
    border-radius: 8px;
    background: white;
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn.active {
    border-color: var(--banana-yellow);
    background: var(--banana-yellow);
}

.copy-btn {
    width: 100%;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #4FC3F7 0%, #29B6F6 100%);
    border: none;
    border-radius: 10px;
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    transform: scale(1.02);
}

.copy-btn.copied {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
}

.regenerate-btn {
    padding: 1rem 1.25rem;
    background: white;
    border: 2px solid #E0E0E0;
    border-radius: 12px;
    font-family: 'Nunito', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--charcoal);
    cursor: pointer;
    transition: all 0.3s ease;
}

.regenerate-btn:hover {
    border-color: var(--coral);
    color: var(--coral);
}

/* Inspiration Section */
.inspiration-section {
    text-align: center;
    padding: 1rem;
}

.inspiration-section h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--brown);
    margin-bottom: 1rem;
}

.brand-suggestions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.brand-chip {
    padding: 0.5rem 1rem;
    background: white;
    border: 2px solid #E0E0E0;
    border-radius: 20px;
    font-family: 'Nunito', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--charcoal);
    cursor: pointer;
    transition: all 0.3s ease;
}

.brand-chip:hover {
    border-color: var(--banana-yellow);
    background: var(--cream-light);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, var(--cream) 0%, #FFE4B5 100%);
    margin-top: auto;
}

.footer p {
    font-size: 0.95rem;
    color: var(--brown);
    font-weight: 600;
}

.footer a {
    color: var(--coral);
    text-decoration: none;
    font-weight: 700;
}

.footer a:hover {
    text-decoration: underline;
}

.credit {
    margin-top: 0.5rem;
    font-size: 0.8rem !important;
    opacity: 0.7;
}

/* Confetti */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
}

.confetti-particle {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    animation: confettiFall 1.5s ease-out forwards;
}

@keyframes confettiFall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Banana Celebration */
.banana-celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
}

.floating-banana {
    position: absolute;
    font-size: 2rem;
    animation: floatUp 3s ease-out forwards;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* Mobile Responsive */
@media (max-width: 600px) {
    .title {
        font-size: 1.8rem;
    }
    
    .title-sub {
        font-size: 1.2rem;
    }
    
    .logo-banana {
        font-size: 2.5rem;
    }
    
    .brand-input {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .detail-item.full-width {
        grid-column: span 1;
    }
    
    .extras-checkboxes {
        grid-template-columns: 1fr;
    }
    
    .time-btn, .ratio-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .generate-btn {
        font-size: 1.1rem;
        padding: 1rem 1.5rem;
    }
    
    .prompt-display p {
        font-size: 0.8rem;
    }
    
    .download-btn {
        font-size: 1rem;
    }
    
    .card {
        padding: 1.25rem;
        border-radius: 20px;
    }
}