/* === CSS Variables === */
:root {
    --color-cream: #FFF8E7;
    --color-milk: #FFFFFF;
    --color-butter: #F5D547;
    --color-cheese: #FFB347;
    --color-chocolate: #4A3728;
    --color-strawberry: #FF6B9D;
    --color-mint: #7FDBCA;
    --color-shadow: rgba(74, 55, 40, 0.15);
    
    --font-main: 'Fredoka', sans-serif;
    --font-accent: 'Caveat', cursive;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--color-cream) 0%, #FFF0D4 50%, #FFE4C4 100%);
    min-height: 100vh;
    color: var(--color-chocolate);
    overflow-x: hidden;
    position: relative;
}

/* === Background Pattern === */
.background-pattern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 179, 71, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(127, 219, 202, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 157, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* === Layout === */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    position: relative;
    z-index: 1;
}

/* === Header === */
.header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.milk-splash {
    position: absolute;
    width: 80px;
    height: 80px;
    background: radial-gradient(ellipse, var(--color-milk) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.6;
    animation: splash 3s ease-in-out infinite;
}

.milk-splash.left {
    left: -20px;
    top: 20px;
    animation-delay: 0s;
}

.milk-splash.right {
    right: -20px;
    top: 40px;
    animation-delay: 1.5s;
}

@keyframes splash {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.6; }
    50% { transform: scale(1.2) rotate(10deg); opacity: 0.8; }
}

.title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.title span {
    display: inline-block;
    animation: bounceIn 0.6s ease-out backwards;
}

.title .can { color: var(--color-strawberry); animation-delay: 0.1s; }
.title .you { color: var(--color-cheese); animation-delay: 0.2s; }
.title .milk { color: var(--color-mint); animation-delay: 0.3s; }
.title .it { color: var(--color-butter); animation-delay: 0.4s; }

@keyframes bounceIn {
    0% { transform: scale(0) rotate(-10deg); opacity: 0; }
    60% { transform: scale(1.2) rotate(5deg); }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.subtitle {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    color: var(--color-chocolate);
    opacity: 0.7;
    animation: fadeIn 0.8s ease-out 0.5s backwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 0.7; transform: translateY(0); }
}

/* === Input Section === */
.input-section {
    margin-bottom: 2rem;
    animation: slideUp 0.6s ease-out 0.6s backwards;
}

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

.input-wrapper {
    display: flex;
    gap: 0.75rem;
    background: var(--color-milk);
    padding: 0.5rem;
    border-radius: var(--radius-xl);
    box-shadow: 
        0 4px 20px var(--color-shadow),
        0 0 0 4px rgba(255, 255, 255, 0.5);
}

.query-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 1rem 1.5rem;
    font-family: var(--font-main);
    font-size: 1.1rem;
    color: var(--color-chocolate);
    outline: none;
}

.query-input::placeholder {
    color: rgba(74, 55, 40, 0.4);
}

.milk-btn {
    background: linear-gradient(135deg, var(--color-butter) 0%, var(--color-cheese) 100%);
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-family: var(--font-main);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-chocolate);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 140px;
}

.milk-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 213, 71, 0.4);
}

.milk-btn:active:not(:disabled) {
    transform: translateY(0);
}

.milk-btn:disabled {
    cursor: not-allowed;
    opacity: 0.8;
}

.milk-btn .btn-text,
.milk-btn .btn-loading {
    transition: opacity 0.2s ease;
}

.milk-btn .btn-loading {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
}

.milk-btn.loading .btn-text { opacity: 0; }
.milk-btn.loading .btn-loading { opacity: 1; }

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(74, 55, 40, 0.2);
    border-top-color: var(--color-chocolate);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.hint {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: rgba(74, 55, 40, 0.5);
}

/* === Result Section === */
.result-section {
    animation: resultPop 0.5s ease-out;
}

@keyframes resultPop {
    0% { opacity: 0; transform: scale(0.9) translateY(20px); }
    60% { transform: scale(1.02) translateY(-5px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

.result-card {
    background: var(--color-milk);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: 
        0 8px 40px var(--color-shadow),
        0 0 0 4px rgba(255, 255, 255, 0.5);
    text-align: center;
}

.verdict-header {
    margin-bottom: 1.5rem;
}

.verdict-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 0.5rem;
    animation: wobble 2s ease-in-out infinite;
}

@keyframes wobble {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

.verdict-text {
    font-size: 1.8rem;
    font-weight: 700;
}

.verdict-text.yes { color: var(--color-mint); }
.verdict-text.no { color: var(--color-strawberry); }

/* === Milk Meter === */
.milk-meter {
    margin: 1.5rem 0;
}

.meter-label {
    display: block;
    font-size: 0.9rem;
    color: rgba(74, 55, 40, 0.6);
    margin-bottom: 0.5rem;
}

.meter-track {
    height: 20px;
    background: linear-gradient(90deg, #f0f0f0 0%, #e0e0e0 100%);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.meter-fill {
    height: 100%;
    background: linear-gradient(90deg, 
        var(--color-mint) 0%, 
        var(--color-butter) 50%, 
        var(--color-cheese) 100%);
    border-radius: var(--radius-md);
    transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

.meter-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.meter-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 0.5rem;
    color: var(--color-chocolate);
}

/* === Explanation === */
.explanation {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--color-chocolate);
    margin: 1.5rem 0;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(127, 219, 202, 0.1) 0%, rgba(255, 179, 71, 0.1) 100%);
    border-radius: var(--radius-md);
}

/* === Share Button === */
.share-btn {
    background: linear-gradient(135deg, var(--color-strawberry) 0%, #FF8FB1 100%);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.share-btn.copied {
    background: linear-gradient(135deg, var(--color-mint) 0%, #9FE7D8 100%);
}

/* === Error Section === */
.error-section {
    animation: shake 0.5s ease-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-10px); }
    40%, 80% { transform: translateX(10px); }
}

.error-card {
    background: var(--color-milk);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: 0 8px 40px var(--color-shadow);
    text-align: center;
    border: 3px solid var(--color-strawberry);
}

.error-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.error-message {
    font-size: 1.1rem;
    color: var(--color-strawberry);
    margin-bottom: 1rem;
}

.retry-btn {
    background: var(--color-strawberry);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background: #FF4F7F;
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 2rem;
    color: rgba(74, 55, 40, 0.5);
    font-size: 0.9rem;
}

/* === Utility === */
.hidden {
    display: none !important;
}

/* === Responsive === */
@media (max-width: 480px) {
    .title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.4rem;
    }
    
    .input-wrapper {
        flex-direction: column;
    }
    
    .milk-btn {
        width: 100%;
    }
    
    .result-card {
        padding: 1.5rem;
    }
    
    .verdict-icon {
        font-size: 3rem;
    }
    
    .verdict-text {
        font-size: 1.4rem;
    }
}