.btn-blue,
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-sans) !important;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
    background: #007fff;
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(0, 127, 255, 0.35);
}
.btn-blue:hover,
.btn-primary:hover {
    background: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 127, 255, 0.45);
    color: #FFFFFF;
}
.btn-blue:active,
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}
.btn-blue:focus-visible,
.btn-primary:focus-visible {
    outline: 2px solid #0066CC;
    outline-offset: 3px;
}
.btn-blue.btn-sm,
.btn-primary.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}
.btn-blue.btn-lg,
.btn-primary.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}
.btn-blue.btn-xl,
.btn-primary.btn-xl {
    padding: 1.125rem 2.5rem;
    font-size: 1.0625rem;
}
.btn-blue.btn-block,
.btn-primary.btn-block {
    width: 100%;
}
.btn-blue svg,
.btn-primary svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}
.btn-blue.btn-icon-only,
.btn-primary.btn-icon-only {
    padding: 0.875rem;
    width: 44px;
    height: 44px;
}
.btn-blue-outline,
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-sans) !important;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-md);
    border: 2px solid #007fff;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
    background: transparent;
    color: #007fff;
}
.btn-blue-outline:hover,
.btn-outline:hover {
    background: #007fff;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 127, 255, 0.35);
}
.btn-white-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-sans) !important;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-md);
    border: 2px solid rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
    background: transparent;
    color: #FFFFFF;
}
.btn-white-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #FFFFFF;
    color: #FFFFFF;
    transform: translateY(-2px);
}
.btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-sans) !important;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    text-decoration: none;
    background: #007fff;
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(0, 127, 255, 0.35);
}
.btn-accent:hover {
    background: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 127, 255, 0.45);
    color: #FFFFFF;
}
.btn-blue:disabled,
.btn-primary:disabled,
.btn-blue-outline:disabled,
.btn-outline:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}
.btn-blue.is-loading,
.btn-primary.is-loading,
.btn-blue-outline.is-loading,
.btn-outline.is-loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}
.btn-blue.is-loading::after,
.btn-primary.is-loading::after,
.btn-blue-outline.is-loading::after,
.btn-outline.is-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #FFFFFF;
    animation: btn-spin 0.6s linear infinite;
}
@keyframes btn-spin {
    to { transform: rotate(360deg); }
}
@media (max-width: 768px) {
    .btn-blue,
    .btn-primary,
    .btn-blue-outline,
    .btn-outline {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
    .btn-blue.btn-lg,
    .btn-primary.btn-lg,
    .btn-outline.btn-lg {
        padding: 0.875rem 1.75rem;
        font-size: 0.9375rem;
    }
}