:root {
    --lac-primary-color: #6c5ce7;
    --lac-secondary-color: #5649c0;
    --lac-accent-color: #ff7675;
    --lac-accent-light: #ff9a9e;
    --lac-dark-color: #2d3436;
    --lac-light-color: #f8f9fa;
    --lac-text-color: #2d3436;
    --lac-text-light: #636e72;
    --lac-card-bg: #ffffff;
    --lac-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    --lac-border-radius: 20px;
    --lac-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px;
}

.lac-container {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--lac-text-color);
}

.lac-calculator-card {
    background: var(--lac-card-bg);
    border-radius: var(--lac-border-radius);
    box-shadow: var(--lac-shadow);
    overflow: hidden;
    transition: var(--lac-transition);
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.lac-card-header {
    background: linear-gradient(135deg, var(--lac-primary-color) 0%, var(--lac-secondary-color) 100%);
    color: white;
    padding: 30px 25px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.lac-header-content {
    position: relative;
    z-index: 2;
}

.lac-header-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 20px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='rgba(255,255,255,0.1)' d='M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
}

.lac-card-header h1 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 1.9rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.lac-card-header p {
    font-size: 1.0rem;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto;
}

.lac-card-body {
    padding: 30px;
}

.lac-input-group {
    margin-bottom: 25px;
}

.lac-input-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--lac-text-color);
    font-size: 0.9rem;
}

.lac-input-group label i {
    margin-right: 8px;
    color: var(--lac-primary-color);
}

.lac-date-input-container {
    position: relative;
}

.lac-date-input {
    width: 100%;
    padding: 14px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    transition: var(--lac-transition);
    background-color: #f8f9fa;
}

.lac-date-input:focus {
    outline: none;
    border-color: var(--lac-primary-color);
    box-shadow: 0 0 0 4px rgba(108, 99, 231, 0.2);
    background-color: white;
}

.lac-toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 25px;
    padding: 15px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.lac-toggle-label {
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--lac-text-color);
}

.lac-toggle-label i {
    color: var(--lac-primary-color);
    font-size: 1.1rem;
}

.lac-toggle-switch {
    position: relative;
    display: inline-block;
    width: 55px;
    height: 28px;
}

.lac-toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.lac-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e0e0e0;
    transition: var(--lac-transition);
    border-radius: 34px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.lac-toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--lac-transition);
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

input:checked + .lac-toggle-slider {
    background-color: var(--lac-primary-color);
}

input:checked + .lac-toggle-slider:before {
    transform: translateX(27px);
}

.lac-result-container {
    margin-top: 30px;
    display: none;
    animation: lac-fadeIn 0.5s ease-out;
}

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

.lac-result-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.lac-result-item {
    position: relative;
    perspective: 1000px;
}

.lac-result-bubble {
    background: white;
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    transition: var(--lac-transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(108, 99, 231, 0.15);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.lac-result-bubble:before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(108, 99, 231, 0.1) 0%, transparent 70%);
    transform: rotate(45deg);
    pointer-events: none;
}

.lac-result-item.lac-floating {
    animation: lac-floating 4s ease-in-out infinite;
}

@keyframes lac-floating {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.lac-result-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--lac-primary-color);
    display: block;
    margin-bottom: 5px;
    text-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}

.lac-result-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--lac-text-light);
    font-weight: 600;
}

.lac-time-container {
    background: rgba(108, 99, 231, 0.03);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 25px;
    border: 1px solid rgba(108, 99, 231, 0.1);
    backdrop-filter: blur(5px);
}

.lac-time-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.lac-time-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(108, 99, 231, 0.15);
}

.lac-time-item:last-child, .lac-time-item:nth-last-child(2) {
    border-bottom: none;
}

.lac-time-label {
    font-size: 0.85rem;
    color: var(--lac-text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.lac-time-label i {
    color: var(--lac-primary-color);
    font-size: 1rem;
}

.lac-time-value {
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    color: var(--lac-primary-color);
    font-size: 0.95rem;
}

.lac-birthday-countdown {
    background: linear-gradient(135deg, rgba(255, 118, 117, 0.08) 0%, rgba(108, 99, 231, 0.08) 100%);
    border-radius: 15px;
    padding: 20px;
    margin-top: 25px;
    display: none;
    border: 1px solid rgba(255, 118, 117, 0.15);
    animation: lac-pulseBackground 4s infinite alternate;
}

@keyframes lac-pulseBackground {
    0% { background-color: rgba(255, 118, 117, 0.08); }
    100% { background-color: rgba(108, 99, 231, 0.08); }
}

.lac-countdown-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    color: var(--lac-accent-color);
    font-weight: 600;
    font-size: 1rem;
}

.lac-countdown-header i {
    font-size: 1.3rem;
}

.lac-countdown-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.lac-countdown-item {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    padding: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--lac-transition);
}

.lac-countdown-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.lac-countdown-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--lac-accent-color);
    margin-bottom: 5px;
    text-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}

.lac-countdown-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--lac-text-light);
    font-weight: 600;
}

.lac-surprise-btn {
    background: linear-gradient(135deg, var(--lac-accent-color) 0%, var(--lac-accent-light) 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 25px auto;
    width: fit-content;
    box-shadow: 0 8px 20px rgba(255, 118, 117, 0.3);
    transition: var(--lac-transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.lac-surprise-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(255, 118, 117, 0.4);
}

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

.lac-surprise-btn i {
    font-size: 1.2rem;
    transition: var(--lac-transition);
}

.lac-surprise-btn:hover i {
    transform: rotate(15deg) scale(1.1);
}

.lac-btn-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.8) 0%, transparent 70%);
    opacity: 0;
    transition: var(--lac-transition);
    z-index: -1;
}

.lac-surprise-btn:hover .lac-btn-glow {
    opacity: 0.6;
    animation: lac-glowPulse 2s infinite;
}

@keyframes lac-glowPulse {
    0% { transform: scale(0.8); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 0.3; }
    100% { transform: scale(0.8); opacity: 0.6; }
}

.lac-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.lac-modal-overlay.lac-active {
    opacity: 1;
    visibility: visible;
}

.lac-modal-content {
    background: white;
    padding: 40px 30px;
    border-radius: var(--lac-border-radius);
    width: 90%;
    max-width: 450px;
    transform: translateY(20px) scale(0.95);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.lac-modal-overlay.lac-active .lac-modal-content {
    transform: translateY(0) scale(1);
}

.lac-modal-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--lac-accent-color) 0%, var(--lac-accent-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 2rem;
    box-shadow: 0 10px 20px rgba(255, 118, 117, 0.3);
}

.lac-modal-content h2 {
    color: var(--lac-primary-color);
    margin-bottom: 15px;
    font-size: 1.6rem;
}

.lac-modal-content p {
    margin-bottom: 25px;
    color: var(--lac-text-light);
    font-size: 0.95rem;
}

.lac-name-input {
    width: 100%;
    padding: 14px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.95rem;
    margin-bottom: 25px;
    transition: var(--lac-transition);
    background-color: #f8f9fa;
}

.lac-name-input:focus {
    outline: none;
    border-color: var(--lac-primary-color);
    box-shadow: 0 0 0 4px rgba(108, 99, 231, 0.2);
    background-color: white;
}

.lac-submit-btn {
    background: linear-gradient(135deg, var(--lac-primary-color) 0%, var(--lac-secondary-color) 100%);
    color: white;
    border: none;
    padding: 14px 25px;
    border-radius: 50px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--lac-transition);
    width: 100%;
    box-shadow: 0 5px 15px rgba(108, 99, 231, 0.3);
    position: relative;
    overflow: hidden;
}

.lac-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(108, 99, 231, 0.4);
}

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

.lac-submit-btn:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    opacity: 0;
    transition: var(--lac-transition);
}

.lac-submit-btn:hover:after {
    opacity: 1;
}

.lac-birthday-celebration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.lac-birthday-celebration.lac-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.lac-celebration-content {
    text-align: center;
    max-width: 500px;
    padding: 40px;
    background: white;
    border-radius: var(--lac-border-radius);
    box-shadow: var(--lac-shadow);
    position: relative;
    transform: scale(0.9);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 2;
}

.lac-birthday-celebration.lac-active .lac-celebration-content {
    transform: scale(1);
}

.lac-celebration-content h2 {
    color: var(--lac-accent-color);
    font-size: 2.2rem;
    margin-bottom: 15px;
    text-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}

.lac-celebration-content p {
    color: var(--lac-text-color);
    margin-bottom: 25px;
    font-size: 1.2rem;
}

.lac-celebration-content .lac-birthday-details {
    background: rgba(108, 99, 231, 0.1);
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
    text-align: left;
}

.lac-celebration-content .lac-birthday-details p {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.lac-celebration-content .lac-birthday-details strong {
    color: var(--lac-primary-color);
}

.lac-celebration-content .lac-birthday-icon {
    font-size: 5rem;
    color: var(--lac-accent-color);
    margin-bottom: 25px;
    animation: lac-bounce 2s infinite;
    text-shadow: 0 5px 10px rgba(255, 118, 117, 0.3);
}

@keyframes lac-bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-30px); }
    60% { transform: translateY(-15px); }
}

.lac-close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--lac-text-light);
    transition: var(--lac-transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.lac-close-btn:hover {
    color: var(--lac-accent-color);
    background: rgba(0, 0, 0, 0.05);
}

.lac-birthday-item {
    position: fixed;
    font-size: 2rem;
    color: var(--lac-accent-color);
    opacity: 0;
    animation: lac-float-up 4s linear infinite;
    z-index: 1;
    pointer-events: none;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transform: translateY(100px) rotate(0deg);
}

@keyframes lac-float-up {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

.lac-confetti {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: var(--lac-accent-color);
    opacity: 0.8;
    animation: lac-confetti-fall linear forwards;
    z-index: 1000;
    border-radius: 50%;
}

@keyframes lac-confetti-fall {
    0% {
        transform: translateY(-100px) rotate(0deg) scale(0.5);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(1000px) rotate(720deg) scale(1);
        opacity: 0;
    }
}

@media (max-width: 768px) {
    .lac-result-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .lac-countdown-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .lac-card-header h1 {
        font-size: 1.5rem;
    }
    
    .lac-result-value {
        font-size: 1.8rem;
    }
    
    .lac-time-grid {
        grid-template-columns: 1fr;
    }
    
    .lac-celebration-content {
        padding: 30px 20px;
        width: 90%;
    }
    
    .lac-celebration-content h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .lac-card-body {
        padding: 20px;
    }
    
    .lac-result-grid {
        gap: 10px;
    }
    
    .lac-result-bubble {
        padding: 15px;
    }
    
    .lac-result-value {
        font-size: 1.5rem;
    }
    
    .lac-surprise-btn {
        padding: 12px 25px;
        font-size: 0.95rem;
    }
    
    .lac-modal-content {
        padding: 30px 20px;
    }
    
    .lac-modal-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
}