:root {
    --act-primary: #051238;          /* InvaDigital Deep Navy */
    --act-primary-dark: #0b1a4a;     /* Dark Corporate Blue */
    --act-secondary: #f2b705;        /* Premium Gold Accent */
    --act-secondary-dark: #d9a304;   /* Darker Gold Accent */
    --act-light: #f8f9fa;            /* Layout Background Light */
    --act-dark: #0b132b;             /* Charcoal Light Headings */
    --act-danger: #ef4444;           /* Standard Red Error */
    --act-muted: #64748b;            /* Muted Slate Text Labels */
}

.act-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    font-family: 'Poppins', 'Plus Jakarta Sans', sans-serif;
}

.act-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(5, 18, 56, 0.05);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(242, 183, 5, 0.15);
}

.act-card-title {
    color: var(--act-primary);
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.act-card-title svg {
    width: 24px;
    height: 24px;
    stroke: var(--act-secondary);
}

.act-form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.act-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--act-primary);
}

.act-form-group input[type="date"] {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--act-dark);
    transition: all 0.3s ease;
}

.act-form-group input[type="date"]:focus {
    outline: none;
    border-color: var(--act-primary);
    box-shadow: 0 0 0 4px rgba(5, 18, 56, 0.08);
}

.act-form-group input.act-error {
    border-color: var(--act-danger) !important;
}

.act-error-message {
    color: var(--act-danger);
    font-size: 0.85rem;
    margin-top: 0.4rem;
    display: none;
    font-weight: 500;
}

.act-error-message.show {
    display: block;
}

.act-checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

.act-checkbox-group input[type="checkbox"] {
    accent-color: var(--act-primary);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.act-btn {
    background-color: var(--act-primary);
    color: white;
    border: none;
    border-radius: 12px;
    padding: 0.9rem 2rem;
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(5, 18, 56, 0.15);
}

.act-btn:hover {
    background-color: var(--act-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 18, 56, 0.22);
}

.act-btn.act-secondary {
    background-color: var(--act-secondary);
    color: var(--act-primary);
    box-shadow: 0 4px 15px rgba(242, 18, 5, 0.2);
}

.act-btn.act-secondary:hover {
    background-color: var(--act-secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(242, 183, 5, 0.3);
}

.act-btn:disabled {
    background-color: #cbd5e1 !important;
    color: #94a3b8 !important;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.act-flex-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.act-flex-group .act-btn {
    flex: 1;
    min-width: 140px;
}

.act-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
    margin-top: 2rem;
}

.act-result-card {
    background-color: var(--act-light);
    border-radius: 14px;
    padding: 1.25rem;
    text-align: center;
    border: 1px solid rgba(5, 18, 56, 0.03);
    transition: transform 0.2s ease;
}

.act-result-card:hover {
    transform: translateY(-3px);
}

.act-result-label {
    font-size: 0.9rem;
    color: var(--act-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.act-result-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--act-primary);
    margin: 0.5rem 0;
}

.act-result-unit {
    font-size: 0.9rem;
    color: var(--act-muted);
    font-weight: 500;
}

.act-countdown {
    background: linear-gradient(135deg, var(--act-primary) 0%, #11255e 100%);
    color: white;
    padding: 2rem;
    border-radius: 18px;
    text-align: center;
    margin: 2rem 0;
    box-shadow: 0 10px 25px rgba(5, 18, 56, 0.15);
    border-bottom: 4px solid var(--act-secondary);
}

.act-countdown-timer {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.act-countdown-unit {
    display: flex;
    flex-direction: column;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    min-width: 85px;
    backdrop-filter: blur(5px);
}

.act-countdown-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--act-secondary);
}

.act-countdown-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.85;
    margin-top: 0.2rem;
}

.act-compatibility-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.act-units-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1.5rem 0;
}

.act-unit-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--act-light);
    border: 1px solid #e2e8f0;
    border-radius: 50px;
    padding: 0.5rem 1.25rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    user-select: none;
}

.act-unit-checkbox:hover {
    background-color: #e2e8f0;
}

.act-unit-checkbox input {
    margin-right: 0.5rem;
    accent-color: var(--act-primary);
}

.act-heartbeat {
    display: inline-block;
    animation: act-heartbeat 1s infinite;
    color: var(--act-danger);
}

@keyframes act-heartbeat {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.act-confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    display: none;
}

.act-confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--act-secondary);
    opacity: 0.8;
}

.act-future-info {
    background-color: rgba(5, 18, 56, 0.04);
    border-left: 4px solid var(--act-primary);
    padding: 0.85rem 1.25rem;
    border-radius: 4px 12px 12px 4px;
    margin-top: 0.6rem;
    font-size: 0.9rem;
    color: var(--act-primary);
    font-weight: 500;
}

@media (max-width: 768px) {
    .act-card {
        padding: 1.5rem 1.25rem;
    }
    .act-countdown-unit {
        min-width: 65px;
        padding: 0.5rem;
    }
    .act-countdown-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .act-flex-group {
        flex-direction: column;
    }
    .act-countdown-timer {
        gap: 0.5rem;
    }
    .act-countdown-unit {
        min-width: 55px;
        padding: 0.4rem 0.5rem;
    }
    .act-countdown-value {
        font-size: 1.2rem;
    }
}